Knock Sensor Problems

RE: What are signs or symptoms of a knock sensor gone bad? I have a 2000 chevy silverado. It's a brand new knock sensor and I'm almost certain it's not the knock sensor, my car is also idling at 1400 rpm instead of 800. The P0325 code means that the Knock Sensor is not working properly. NTK Oxygen Sensors ID0309 Knock SensorNTK Oxygen Sensors ID0309 Knock Sensor. If the knock sensor wiring harness and electrical connectors are working properly, the technician will test the knock sensor. Here are some of the most common symptoms of a faulty mass airflow sensor:. Book says its a knock sensor open. I would focus somewhere else on this problem. I also had a knock sensor code on my 2003 8. This will involve installing a second NOx sensor and a new or replacement diesel-oxidation catalyst. In fact, if you have a 4. Detonation is a common problem associated with lean fuel mixture -non stichometric-and torque. Replacing the knock sensor usually takes care of the problem. 3 sensor locations oxygen sensor location 4. Knock Sensor Quick-Fix The knock sensor is used by the ECM to fine tune ignition timing. As the name implies, your Dodge knock sensor detects knocking and pinging in your engine, through the particular vibrations that they produce. A knock sensor in forms the vehicle cpu that either abnormal combustion or detenation is acuring and in most automobile applications will change the vehicles timing. net - look under knock sensor. There may even be a burning smell coming from the engine and getting into the cabin of your vehicle. The code indicated that it was the left side knock sensor. The single-wire resonant knock sensor was introduced with early small-block engines. If the sensor is working correctly, you should see the timing begin to retard. Knock sensor Cyl 1-2-7-8. Went to local auotparts store, had my truck scanned because it would barely stay running while putting it into gear after first starting out. The knock limit, the point at which knock becomes excessive, depends upon fuel quality and engine, operating and environmental conditions. All i did was take the sensor out of the block ground it out so it sends no signal. And amazingly, the car has thrown a P0237 knock sensor LOW input, even though the sensor is laying off to the side. Bought 2 new sensors on the internet because they were $100 cheaper each than local parts store and $250 cheaper than the dealer and bought a new factory harness on eBay. Though full-blown knocking and pinging are audible to the human ear. The ECM uses this information to determine if the engine is knocking and adjusts ignition timing, air fuel ratio and throttle plate to protect the engine from excessive knock. One thing it listens for is pre-ignition or knocking inside the engine usually caused by a few issues including dirty gas, wrong engine timing low octane fuel, wrong air / fuel mixture, and. This sensor takes advantage of this unique property. It does it about 10 minutes in every time. By hot I mean 110+ AZ heat. The knock sensor failing at 118k miles isn't really bad, thats a lot of miles for one sensor to endure. If the sensor is good, then there is some other reason why the engine is running poorly and causing the engine to knock, and IMO, the first two places I'd start to look are the CT sensor and the O2 sensor. Re: Code 25 knock sensor problem aquatrax 2002 What you have read is pretty much what it is, new ECM is the solution, unfortunately, we were the ones with the privilege of paying $295. 4L OEM Knock Sensor Wire 82219-34010. Unclip remove bolt. The knock sensor designed to detect and respond to vibrations caused by vehicle engine advanced timing detonation, known as engine knock or pinging. Use a $2 27mm socket to remove or buy the special tool which probably costs $100. A valve train that is mistimed, carbon fouling causing pre-ignition or detonation, loose components such as a flywheel or torque converter, loose rockers etc. A car knock sensor is located on the intake manifold, cylinder, or engine block. well they changed the knock sensor and this clip on wire to. GM Knock Sensor. I would replace the knock sensor since it is cheap, just a little difficult to get to. I had the same problem as described by you with my Honda CRV 2004. 2013 Chevrolet Cruze I have loved my experience driving a Chevy Cruze. I got the dreaded P0330 code saying the #2 knock sensor circuit was bad. im thinking the ecu is at fault. For the cost of a knock sensor, who wouldn't want one, comparatively speaking, they are DIRT CHEAP!!. Fast Light Off and Ultra Fast Light Off sensors employ a low resistance, high watt density heater in order to expedite warm up time. 8L 3800 v6 engine. when they put their tester machine on my truck it still comes out knock sensor problems and a short in a circuit. (1, then 2 etc. At one point someone swapped out the Y8 block with a d15b2, and of course there is no knock sensor on a d15 block or a CKF sensor. A knock sensor is a device used to prevent detonation or spark knock. There may even be a burning smell coming from the engine and getting into the cabin of your vehicle. The P0325 code means that the Knock Sensor is not working properly. Like I said just to double check that it is the fact that some of the shielding is damaged causing the bad reading I would read the plugs that will. my dealership fixed what was causing the problem with no problems. O2 sensors should actually be replaced on a regular basis just like any other routine maintenance part (i. A knock sensor is designed to pick up vibrations caused by engine knock and output a signal to the ECM. If the resistance is infinity (open circuit), there's a good chance the cable is broken or disconnected from the sensor; the FSM does not say this, that's my opinion. The (MAF) Mass Air Flow Sensor senses air flow volume in the air tube indicating engine load. Each differenty type of sensor has different frequency 'modes', which is steps of frequency at which they will resonate. Please make sure to specify your year when ordering to ensure getting the correct wire. 12591312 - 8. i have wired up the knock sensor to D3 but the light is still coming on. Knock sensors detect pings in the engine and adjust ignition timing to restore perfect operation. Increased exhaust emissions. Half the time the engine light comes on and half the time not - which is the reason I picked up the code reader. 2015 Axys Pro X 800 H. Put anti seize on the threads of the sensor. 1L Engine Specs: This item must be installed to a torque value of 15 lbs ft with d. The cause of prolonged detonation could be an operating conditions or faulty sensor problem. Shop Knock Sensors at Automotive Superstore - Free Shipping $99+* Bosch Knock Sensor 0 261 231 045. To get a better understanding of how a faulty knock sensor reacts, note the points below: One symptom of a bad knock sensor is the engine doesn't feel right while driving at speed, A bad knock sensor may also not let the engine accelerate properly while driving on the highway, The computer. When trying to get maximum drag strip performance out of a feed-back timing control engine, you might want to disconnect the knock sensor. replaced the lifters on the other side, still knocking. Knock sensor. KS (Knock Sensor): The knock sensor is used to detect engine detonation (spark knock). Customer may also complain of driveability issues, such as pinging (knock), surging, lack of power, poor fuel economy, rough idle, etc. I would focus somewhere else on this problem. Should the sensor be bad, then it could be as simple as buying a new knock sensor and your problem is solved. You or your mechanic should test the sensor before declaring that it’s the problem. The Symptoms of a Bad Knock Sensor Check Engine Light. The knock sensor is a simple, passive (non-powered) piezoelectric, audio microphone. googlegroups. Knock prediction [ edit ] Since the avoidance of knocking combustion is so important to development engineers, a variety of simulation technologies have been developed which can identify engine design or. Infact the knock sensor is most likely working fine and it is picking up a problem else where in the system. The location of a knock sensor is on the engine block, cylinder head or intake manifold. The sensors detect knock or ping in the motor, which is pre detonation and can cause serious and expensive damage to the motor. How to Replace Knock Sensor Is your Toyota Camry throwing a faulty knock sensor code, or exhibiting symptoms like noises and shakes? This article applies to the 5th generation Toyota Camry (2002-2006). Based on adifferent thread I replaced the bank 1 downstream O2 sensor because I thought it might be related to the P13B0 code coming from my innova 3160 code reader. Knocking (also knock, detonation, spark knock') in spark ignition internal combustion engines occurs when combustion of some of the air/fuel mixture in the cylinder does not result from propagation of the flame front ignited by the spark plug, but one or more pockets of air/fuel mixture explode outside the envelope of the normal combustion front. This particular problem wasn't mentioned anywhere in SI, Identifix, or TSB's/PIP's. 02-14-12 11:40 PM - Post# 2190813 Here's the story. Now that the slit is made onto the socket, you are now ready to remove the knock sensor. In this video I talk about an easy way to test the knock sensor. Always use the correct Knock Module WITH the correct knock sensor or you will have problems. Just plur your Chevy Silverado 1500 and Year into the Year Make Model selector above and when you search for a Knock Sensor Auto Parts Warehouse will only show you parts that fit your vehicle. Worn-out oil can damage the chain, guides and tensioner. This is a discussion on 1998 Trans Am knock sensor problem within the Firebird / WS6 forums, part of the Vehicle Specific category; Hey guys, i have a 98 t/a and i have the usual bolt ons and my knock sensors are bad. These sensors are mainly used to rectify and improve the fuel delivery in a vehicle by detecting harmful engine vibrations or pinging due to over or under load. The best course of action would be to have these components properly diagnosed to pinpoint the true fault. Install the new rear bank knock sensor. The 1KD-FTV engine had a deep-skirt cast iron cylinder block with 96. dealers will replace the front czs with a redesigned sensor. It drives very smoothly and it is very good on gas mileage. I want to replace the knock sensor on my 2013 1. Just did this job today and found some better ways to do it, over what I've read on some Audi sites so thought I'd publish my own guide. and also make sure that a wire didnt get pinched under the motor somewhere that is causing a short on wire. The OBD code of 52 can mean that your 4Runner's knock sensor has failed. The G62 temperature sensor is a fairly common component to go on the Audi A4, typically this can be diagnosed via vag-com codes such as 17664. They confirmed the knock sensor issue, replaced the sensor and I have not had a CEL since they replaced it. honda forum at Car Dealer Forums; [email protected] Also, the most common source of this problem is in the knock sensor itself, connectors or wirings of the sensors to the PCM. Problem: The DPFE sensor monitors function of the EGR valve by measuring flow changes in the exhaust gas recirculation (EGR) system. It's not so easy to get to!. There may even be a burning smell coming from the engine and getting into the cabin of your vehicle. The code means there is a problem in the knock sensor circuit, that means the the knock sensor connector wire pins may have a problem, the wiring to the sensor may be damaged, or the PCM may have a problem, and of course the sensor itself, I have one question did you tighten the sensor to the proper inch pound setting of torque? if not this can. It could be any number of things which you probably dont want to hear, but the knock sensor would not be causing this. ADD TO CART. This engine had a slight rod knock or upper engine noise that was causing the knock sensor to record a false signal. Clean out all the water before removing the knock sensors. If the sensor is good, then there is some other reason why the engine is running poorly and causing the engine to knock, and IMO, the first two places I'd start to look are the CT sensor and the O2 sensor. While it is better to kill the sensor than your engine, a new Toyota knock sensor lists for $154. To get a better understanding of how a faulty knock sensor reacts, note the points below: One symptom of a bad knock sensor is the engine doesn’t feel right while driving at speed, A bad knock sensor may also not let the engine accelerate properly while driving on the highway, The computer. This can mean one of two things, either your knock sensor has failed, or there's a problem with the wiring harness that leads to your knock sensor. I have diagnosed this problem hundreds of times and the solution is always the same. Public Forums. The P0325 code means that the Knock Sensor is not working properly. Full Answer. The knock sensor detects vibrations that come from a knock or an irregularity in combustion and send a signal to the engine control computer, which then adjusts timing to correct the knock. P0330 = Knock Sensor #2 P0325 = Knock Sensor #1. I have tried the key on/off 5 times as suggested, have added octane boost to rule out a bad tank of gas, and have taken 7-8 rides making sure the engine came up to operating temperature each time. So what kind of fuel are you using? Got bad mixes before, so finally said, screw ethanol. Please Log in or Create an account to join the conversation. This particular problem wasn't mentioned anywhere in SI, Identifix, or TSB's/PIP's. O2 sensors should actually be replaced on a regular basis just like any other routine maintenance part (i. and ive heard of people engines not running right with this problem but i also read that sometimes the when the knock sensor messes up itll give u problems like that is their a way to find out for sure its just the sensor or something. The knock sensor is easily damaged during removal even if you use the proper tool to wrench it off. To temporarily solve the problem I put a 550K resistor in parallel with the bad sensor, and this worked fine. Common engine noises associated with faulty knock sensors include sputtering, knocking and pounding sounds. Do not use this system except for experimental purposes. If the sensor is good, then there is some other reason why the engine is running poorly and causing the engine to knock, and IMO, the first two places I'd start to look are the CT sensor and the O2 sensor. I changed both the knock sensors and the pigtail for the knock sensors. I don't throw codes though. When you catch the problem with the knock sensor right away and replace this component, you prevent it from giving you bad information and ensure that you know when there is a knocking problem inside the engine. Put anti seize on the threads of the sensor. This further causes the engine to sputter, and can also lead to more serious engine problems. To temporarily solve the problem I put a 550K resistor in parallel with the bad sensor, and this worked fine. These sensors can reach operating temperature in as little as twenty seconds. Fits all 1990+ Nissan 300ZX models. I have been having problems with the engine "pinking". 4L Triton engine. I now know there is two knock sensors if I’m not mistaken. Of course, this means that the GMC Sierra and Yukon of the same years have the same issues. recently so I pulled the codes and p0327 came up and. Hello I brought my Toyota 4 runner to a shop with knock sensor problems even after having my truck engine rebuilt top to bottom. Check manufacturers specs and test with a multimeter. Higher octane fuel will provide much better MPG. The code stands for knock sensor bank one sensor one circuit input high. So we agreed to have both the knock sensor and the exhaust manifold replaced for $2,091. The knock sensor is easily damaged during removal even if you use the proper tool to wrench it off. I'm having issues with my knock sensor as well. I had the same problem and after replacing the cap, rotor. False knock sensor code will be set if the vibrations occur on an unusually rough road wile you are driving. Another important difference is the use of a MAF sensor on the ’94 and later models. Quick view. The KS is a piezoelectric accelerometer with the sensor designed to resonate at approximately the same frequency as the engine knock frequency. It is able to sense engine knock and send an appropiate signal to the PCM. According to Repairpal. Tuning A Knock Sensor Equipped Engine. If the sensor is working correctly, you should see the timing begin to retard. A faulty mass airflow sensor will cause problems similar to low compression or low vacuum, and will also show symptoms similar to when your vehicle has low fuel pressure from a faulty fuel pump. Put RVT on the new wiring harness. Knock Sensor Detection System Software Update The knock sensor technology will be installed through a free software update performed by Hyundai dealers and is rolling out through a product improvement campaign to approximately 2 million Hyundai vehicles, including all model year 2011-2018 Sonata and 2013-2018 Santa Fe Sport vehicles with. Sierra 18-7553 Knock Sensor. Series 60 Knock Sensor. One good knock caused by excessive load, bad gas, or a backfire can kill it instantly. They are a piezo-electric sensor, which can only be tested by exciting them with a frequency sweep(and typically high voltage). Applications: All Workhorse Chassis Equipt with an 8. There may even be a burning smell coming from the engine and getting into the cabin of your vehicle. If you have a post 96 Q45 you can take it to any shop that has a code scanner (most shops have these) and they can determine if it is the knock sensors. Knock sensor Cyl 1-2-7-8. Use a $2 27mm socket to remove or buy the special tool which probably costs $100. Worst Complaints About the Suzuki Grand Vitara. The knock sensors failure will set a check engine light and a knock sensor fault code. Further bench testing may be done. Your credit card information is encrypted while traveling the Internet. On ohming the sensors, I found that one was open most of the time. Test your setting on the bench first. foresee any problems purely based. A (MAP) Manifold Absolute Pressure Sensor senses air pressure in the intake manifold. V8 | Troubleshooting a knock sensor. A vehicle with a bad oxygen sensor may run / idle roughly and/or irregularly. Low octane gas is usually the cause of poor performance but keep in mind a loud lifter, exhaust leak, noisy belt tensioner or anything making noise under the hood will cause the knock sensor to reduce. As a result, a voltage sent to the PCM will retard spark timing. Saab 900 Knock Sensor » here you are at our site, this is images about saab 900 knock sensor posted by Maria Rodriquez in Saab category on Oct 21, 2019. Well if the engine is loosing that much power than it is not running fine. The OBD code of 52 can mean that your 4Runner's knock sensor has failed. This further causes the engine to sputter, and can also lead to more serious engine problems. Just now getting ready to replace the sensors as I need to go in anyway to take care of an injector problem. Bought a new harness along with the sensor and replaced them. The sensors detect knock or ping in the motor, which is pre detonation and can cause serious and expensive damage to the motor. Knock sensor replacement on your Chevy/GMC Silverado/Sierra/Tahoe etc. A (MAP) Manifold Absolute Pressure Sensor senses air pressure in the intake manifold. Held by a single bolt through the centre of the sensor. ADD TO CART. The P0325 code means that the Knock Sensor is not working properly. P0325 is a powertrain OBDII trouble code that has the same meaning for the Honda Accord as it would any other vehicle. With the passage of time, the sensor loses its efficiency and thus has to be replaced. The knock sensor is a simple, passive (non-powered) piezoelectric, audio microphone. (ECS) module to listen to the Knock Sensor and report ping to the ECM (on \'90-\'96 Corvette motors the ECM listenes directly to the Knock Sensor). You are able to stop looking haphazardly for all those hard-to-find Toyota Corolla spares, and permit us to complete the groundwork for you personally. Pro Tip: Chevrolet Cruze Knock Sensor Codes was created by Tyler Just another heads up for the hard working folks around here. Most vehicles nowadays are equipped with an automatic knock sensor. A Hyundai engine warranty extension has been granted for all owners of 2011-2018 Sonata and 2013-2018 Santa Fe Sport vehicles due to knocking noise and engine failures. Please help! 14 Answers. I bought a new knock sensor wire for $14 online and an intake gasket kit for $24. Due to age and heating and cooling this wire can become aged and break internally causing a knock sensor code. I want to replace the knock sensor on my 2013 1. The sensor is designed to listen for vibration, and it does a very good job. The knock sensor is usually mounted on the engine block, cylinder head or intake manifold. Since vehicle emissions are at their most harmful when a vehicle is cold,. Other day I was in a time crunch and filled up at an Arco (91 octane). The harness is in hand now and the dealer told me to build a dam out of Silicone at the rear of the intake to stop the rust problem. Re: 1997 Merc 5. Clean out all the water before removing the knock sensors. Set Condition: Knock Sensor #1 signal below minimum acceptable threshold voltage at particular engine speeds or above 5. if its temp. took it to the dealer, the replaced the lifters on one side, still knocking. 1995 Jaguar most common problems Jaguar 1995-1997 X300 (AJ16) Common Problems/Weaknesses – After 10 yrs/100,000 miles 1 Cracks in exhaust manifold 2 Faint LCD clock dis Removing X300 Door panels. feel free to share your thoughts or knowledge. This is because its function is to sense vibrations caused by engine knock or detonation. 0 mm bores and a 103. html) Noises. Had a code for ok nock sensor replaced both of them cleared code out and it Came back on. 7 u059f Nox Sensor B IGOTACUMMINS is an online forum and community for all Cummins Turbo Diesel enthusiasts. TPI engines use only one knock sensor and, with the exclusion of the Camaro and Firebird, LT1 engines use two knock sensors. I have searched the forums and none of the solutions listed have worked for me. To get a better understanding of how a faulty knock sensor reacts, note the points below: One symptom of a bad knock sensor is the engine doesn’t feel right while driving at speed, A bad knock sensor may also not let the engine accelerate properly while driving on the highway, The computer. Common engine noises associated with faulty knock sensors include sputtering, knocking and pounding sounds. Knock Sensor Detection System Software Update the knock sensor software update to deliver early warning to customers of excessive bearing wear before a more serious problem, such as engine. Common Ignition Problems Pinging It sounds as though a handful of marbles were dropped into your engine and generally occurs under hard acceleration under load. About a week ago I noticed that I am getting some ST knock retard at WOT (all RPMs). Though full-blown knocking and pinging are audible to the human ear. Replacing the knock sensor usually takes care of the problem. I now know there is two knock sensors if I’m not mistaken. As stated by Devon David they aren't difficult to replace. The Just Answer technicians specialize in either specific brands or automotive problems. The knock sensor technology will be installed through a free software update performed by Hyundai dealers and is rolling out through a product improvement campaign to approximately 2 million. i have tried 3 different knock senosrs and they all show the light i have rewired it again twice to make sure and reset the ecu but it still come on. P0325 is a powertrain OBDII trouble code that has the same meaning for the Kia Soul as it would any other vehicle. Detonation can break piston lands and spark plugs. Don't have a Credit Card? You can send us a check, money order or you can use PayPal. Answer B is wrong. Knock sensors can experience problems that can impair engine function. This is a disposable car, spend a little extra for a better car! Dont make my mistake. Knock Sensor Problems So, first off, I do have a code for the check engine light, but it's currently out in my car and I can't get to it until a little bit later, but I'll be happy to post it when I can. Should the sensor be bad, then it could be as simple as buying a new knock sensor and your problem is solved. In case of a knock sensor problem, the car may exhibit certain signs such as slowed acceleration, and dragging or jerking sensations while trying to step on the gas. with less then 100,000 miles I went through 4 sets of brakes, inner tie-rod, water pump, rear wheel assembly. This will involve installing a second NOx sensor and a new or replacement diesel-oxidation catalyst. Knock sensor detects detonation and lets the computer know to retard timing to protect the engine. They were ~$160 a piece. 3 vacuum diagram 7. A good friend of mine just graduated from Wyotech and last night we tore it down and replaced the knock sensor with the proper one and it runs like a champ now. Add to Compare. The P0171 code usually relates to the upstream O2 sensor which was replaced once from the dealership. 85 octane might be fine in Denver, but as you leave the higher elevations, and as you try to climb a steep mountain, you really do need 87 octane or higher fuel. The P0325 code means that the Knock Sensor is not working properly. The sensors themselves are mounted at the bottom of the V and between the cylinder heads. 3 liter F series SOHC engine in it. " Hope that makes sense. A Hyundai engine warranty extension has been granted for all owners of 2011-2018 Sonata and 2013-2018 Santa Fe Sport vehicles due to knocking noise and engine failures. The acceleration and fuel mileage will start to decrease for one thing. Must be a story around that. with less then 100,000 miles I went through 4 sets of brakes, inner tie-rod, water pump, rear wheel assembly. And amazingly, the car has thrown a P0237 knock sensor LOW input, even though the sensor is laying off to the side. A good friend of mine just graduated from Wyotech and last night we tore it down and replaced the knock sensor with the proper one and it runs like a champ now. If you don't get to the source of the problem, then just replacing the knock sensor won't solve your problem. Though full-blown knocking and pinging are audible to the human ear. 3) will start missing when i stomp the gas and also my fuel milage has went all to crap. Mechanic diagnosed Knock Sensor, bought a new one got it installed deleted P0325 now the light stays on even in town running. I was getting a Check Engine Light for a Knock Sensor. If the sensor is good, then there is some other reason why the engine is running poorly and causing the engine to knock, and IMO, the first two places I'd start to look are the CT sensor and the O2 sensor. I recently was involved in a case where a knock sensor was broken, gave a code on the reader, but no restricted performance. my truck is throwing 7 codes currently. When the cel pops on for the knock sensor it automatically tells the ecu that there is a problem so it tells it that there is knock. 3 s10 motor s10 first dropped s10 s10 lowering 3 4 awd s10 s10 zr2 s10-2 3 -drop s10 frame engine mount for 4 3v6 1994 chevrolet s10 4 3 motor lowered first gen s10 1995 chevrolet s10 3. Now after driving about 20 minutes I get P0327-Knock sensor circuit low voltage (Old) (Immature). I have had this light on for a while now and the times I have had it read and cleared (for NYS inspections) that was the only code present. The knock sensor is used by the ECM to fine tune ignition timing. How to fix a bad knock sensor. (See number 6) 5. NTK Oxygen Sensors ID0309 Knock SensorNTK Oxygen Sensors ID0309 Knock Sensor. At 68degF measure between leads colored Pink-Orange 4. engine knock- dealers are to check for aftermarket oil filters if AC-Delco filter--- apply warranty. Answer B is wrong. By hot I mean 110+ AZ heat. Here is wiring diagram. Exact location may vary depending on vehicle year / make / model. Please keep this thread clean, if I've missed anything out please PM me Loss of power (Petrol engines) This is a common problem with the petrol engines. This is a discussion on 1998 Trans Am knock sensor problem within the Firebird / WS6 forums, part of the Vehicle Specific category; Hey guys, i have a 98 t/a and i have the usual bolt ons and my knock sensors are bad. P0330-KNOCK SENSOR #2 CIRCUIT When Monitored: With the ignition on and the engine running. This is a fairly major repair, but do not ignore it or you could end up with some major problems. Put everything back together and fire it up. To fix this problem, give the knock sensor connector a gentle tug. If your car is throwing the code it has been reading knock so often that it no longer assumes it to be cause by bad fuel, vacuum leaks, or any other problem but rather lies in the sensor itself. It must thus be in the waterflow and affected by temperature I guess. Hi guys! I recently had a critter chew my knock sensor wire on my 2015 Tacoma Prerunner. Owner was prepared for a much more repairs, but changed the knock sensors first, to get that problem out of the way. " Hope that makes sense. It has been ranging from 3 to 5 degrees. Some form or fuelling / management problem would explain all of that. Before performing any adjustments, check the transmission fluid level and sniff the fluid. It is not cracked and shows no continuity with ground. Sierra 18-7553 Knock Sensor. I assumed it was the knock sensor and after haveing it read it was in fact the cause. Theres no cheap way of having these injectors tested properly and very few people have the equipment to do it. You'll lose MPG and power. Bought 2 new sensors on the internet because they were $100 cheaper each than local parts store and $250 cheaper than the dealer and bought a new factory harness on eBay. The most common problem reported with the 3. The dealer has been less than worthless with this issue even though it has been a problem since the truck was delivered. The knock module supplies the ECM with the proper ignition retard rate when engine knock is detected. When the sensor malfunctions, two common complaints become a noticeable lack of performance and a major decrease in miles per gallon. Both technicians are correct. Does anyone already have this problem and solve it ? Except a poor gas milage i did'nt notice any problem. Knock sensor Cyl 1-2-7-8. It does not mean the ECU is detecting knock. The result was a severe low power condition at times. Or, maybe that the knock sensor is still good, but its pigtail or plug to the ECU has a short or broken connection. It can sense too much unburnt fuel and then reduce the intake mixture and vice versa. KS (Knock Sensor): The knock sensor is used to detect engine detonation (spark knock). 4L OEM Knock Sensor Wire 82219-34010. 0 located: Your answer will be published for anyone to see and rate. Conclusion. When the knock sensor is damaged or broken, the detonation process is not regulated properly. It would require the oil filter be sent off to the manufacturer for testing. Free shipping. I recently was involved in a case where a knock sensor was broken, gave a code on the reader, but no restricted performance. Actually it’s the 2nd knock sensor which is located in the left side of the cylinder block. He seemed to be full of it otherwise, why would he be right here? I don't personally think a knock sensor would cause the problems you say you have intermitentlly. Timing Chain Wear: Since the 3.