Service engine light was on and was reading a P0332 code replaced Knock Sensors and Service Engine light went off for about three weeks and is back on reading the same code. Any Suggestions on what it may be?? Does the sensors need to be replaced again? Can something be making the knock sensors short out?
SOURCE: PO305 Code on 2002 Yukon XL 5.3L
You probably have water in your fuel . Use some Stabil healthy dose and then some isopropyl alcohol gas line antifreeze that Will probably fix it . and fill it at a popular gas station , not a little station that only sells a little gas. Its either that or you might have a pluged cattalyitic converter. Try this site . http://www.obd-codes.com/forums/search.php?search_id=active_topics
SOURCE: trying to locate where the knock sensor is located on the engine.
on my 1990 gmc its right be hind the starter its round and has a one wire plug becarful some have left hand treades and coolant willbe comn out i would do it while it was cold
SOURCE: i need the location of the knock sensors on a 2002
The knock sensors are under the intake plenum ( the plastic part ). There are 2 sensors.
SOURCE: How do I replace the Knock Sensors on a 2002 GMC
remove the intake manifold ,remove radiator ,remove radiator intake and outake housing, remove fan ,remove all belts: power steering, alternator and if you have a/c, remove harmonic balancer ,remove timing belt covers, remove timing belt remove intake housinng once you have remove all the above, your freaken engine will look naked, you can see the location of the knock sensor is locate in the engine valley hope this helps u might wnat to google knock sensor so u knoe what it looks like
SOURCE: i have an engine code PO332 knock sensor 2 circuit
The most likely cause of your code is a bad rear knock sensor. You should check the knock sensor wiring harness for corrosion. But if that checks out the sensor will have to be replaced. The knock sensor is under the intake manifold, although it's not too difficult to remove. Both knock sensors should be replaced along with the wiring harness, just because of labor involved in gaining access to the sensors. You could try clearing the code, it may stay off for a long time.
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