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end_display_feedback_code_windowUntitled Document Check out our overall recent feedback, feedback on this item, and our shipping feedback below. RELEVENT RECENT REVIEWS! Noone else has this. Our seller ratings are in the top 5% of eCRATER. It takes an incredible level of customer service to be there. We always have the lowest price on eCRATER, if not... Let us know! Manufacturer direct pricing. Great parts that have taken years to source and produce for you. Phone Number and an Address... the real deal. Not someone selling out of their basement! Add us to your favorite seller list! Click--> Chandler Motorsports The Part Recent Feedback Received This Part and Others Like It - Most Recent G29VUBEQSCS7FGBW About the part New Revised design OEM Fit Top Shelf Brand LIFETIME WARRANTY Knock Sensor Information & Symptoms Automobile engines are complicated machines. They require a multitude of belts, fluids, moving parts and chain reactions all occurring in the correct timing and rhythm for your car to run efficiently. If one device fails or if a part doesn't move at the precise time it needs to, the car may not run correctly or the engine may be damaged. One of the components that is vital to your car running properly is the knock sensor. Function The knock sensor is a listening device located inside the engine near the intake manifold or the pistons that is designed to detect pressure inside the engine. The vibrations that it records as a result of this pressure are converted into voltage and sent to the car's engine control unit (ECU). This is to prevent detonation in the engine when the fuel/air mixture explodes too quickly and causes engine knock or "pinging." The ECU takes the information provided by the knock sensor and adjusts the ignition timing to the engine. Components The knock sensor is made of a piezoelectric element that has a coil around it. A wire connects the sensor directly to the ECU. When the element vibrates, it sends electric current through the wire to the ECU, which then interprets the reading. There is generally one knock sensor for every four cylinders in the engine. Benefits "Pinging" or engine knock happens when there is an early explosion in the combustion chamber of the engine. The flame collides with the piston which is still rising (or the spinning rotor in the case of a rotary engine) which results in engine vibration and engine knock. In minor cases, this results in a decrease in engine power. If it gets severe, major engine damage could result which would require up to thousands of dollars to repair. The knock sensor is the key instrument that prevents this from happening and keeps the timing of the engine running smoothly and safely. In some models, the knock sensor serves a dual purpose of also increasing the ignition timing to the level just below engine knock to achieve optimal power and performance. Symptoms of Failure Symptoms Include: SES Light Hesitation Bucking at high RPMS Audible missing or pinging Surging Replacement Depending on the make and model of your car, replacing a knock sensor can be very expensive. It is cheaper to replace it yourself but is very time-consuming and only recommended if you have a knowledge about automobiles. Some models have the knock sensor stored inside the engine block, in which case the radiator coolant would need to be drained. The sensor must also be torqued to exact specifications or it will be too sensitive to vibration and harm engine performance or not work at all. Refer to your owner's manual for the specifics on your engine Interchange Numbers Manufaturer Number OEM 10456216 Ac Delco 213-329 AIRTEX 5s5538 Autopart International 213329 Autopart International AA177693F BWD Ignition S8633 Carquest / Airtex 5s5538 CarQuest / UCI 72-4695 Carquest / Standard Motor Products KS105 BWD Automotive S8633 Wells SU7039 Parts Master / BWD Automotive S8633 Niehoff DR905 VEHICLE COMPATIBILITY Medium Truck Topkick 1997, 1998 Medium Truck Tilt Cab (Isuzu) GMT540 1997, 1998 Medium Truck School Bus 1997, 1998 Medium Truck Kodiak 1997, 1998 Fits the Following Assemblies: LR0 - ENGINE,7.0L,GAS,8 CYL; LS0 - ENGINE,V8,6.0L; NM8 - EMISSION SYSTEM,LEADED FUEL(EXPORT); NM8 - EMISSION SYSTEM,LEADED FUEL(EXPORT/DOMESTIC MILITARY); NM8 - LEADED FUEL SYSTEM COMPATIBLE (EXPORT/DOMESTIC MILITARY); Recent Feedback We've Received! All Parts - Most Recent Frequently Asked Questions Shipping Discounts - Most of our listings provide free shipping, so understandably we can't discount lower than free. If the item your viewing does not have free shipping, we do not have room to discount the shipping. Our item prices are the lowest on eCRATER. Item Discounts - If the item you see is not the lowest priced on eCRATER given an equal item, please message us so that we can change the price for you to purchase. Please make sure to triple check the item your looking at is NEW. Otherwise we offer wholesale discounts, more details below! Shipping with your carrier - We do not ship with customer carriers. Wholesale - Our wholesale orders start at $1000. So if your interested let us know so we can set up an product for you. OVERNIGHT ORDERING RIGHT NOW!! OMG!! - We don't offer overnight shipping, sorry. How to get your part for FREE! Do you have a good looking vehicle? Are you installing the part? Good looking lady friends help (ladies you are an under represented population of our ordering base!) If you don't see install pictures for this part already, double check with us by asking on eCRATER messages. Simply ask, has this part been "documented" yet. We might be finishing up a previous shoot. Summarize each of the install steps. Take pictures of your install with some smiles, humor is a big plus! We review the pictures to look for copyright issues or any other problem and send you your purchase price back. IF YOU SEE INSTALL PICTURES IN THIS LISTING IT OBVIOUSLY HAS BEEN DONE ALREADY FOR THIS PART. Try looking for another in our listings! Want to wholesale our products? We're always interested in setting up resellers and dealers. Contact us so we can setup an product for you. Our wholesale opportunities start at $1000. We have other options available for those with moderate to heavily traffic'd websites or retail locations. Message us on eCRATER or call us at 877-727-8742 x3! Cancer, Alzheimer's, Cystic Fibrosis, BSE and Emphysema Research Diseases such as Alzheimer's disease, cystic fibrosis, BSE (Mad Cow disease), an inherited form of emphysema, and even many cancers are believed to result from protein misfolding. When proteins misfold, they can clump together ("aggregate"). These clumps can often gather in the brain, where they are believed to cause the symptoms of Mad Cow or Alzheimer's disease. Stanford University has taken up a project to use Distributed Computing to attempt to understand and hopefully one day solve the problem of misfolds called Folding.at.Home. We take part in the project and you can too, very simply. All it requires is for you to install the program on your computer, it runs on your idle CPU time. The overall performance cost to run the program is under 1% at full usage. We run it on all computers in the warehouse and I run it on my personal computer. http://folding.stanford.edu/English/Download Where you can download the installer. http://en.wikipedia.org/wiki/Distributed_computing The technique used to process the calculations