Knock Sensor

[Trogdor636]

Ok, so I searched and found some random threads, so shoot the search function if this info is somewhere. This is the only code that my ECU has stored. 34. Every time. I've erased it, and its come back, no other codes. Now I know I have read that other things will set the knock sensor off, but will the other things that set it off throw a code as well? Or could it be something completely different that sets the knock sensor off? If I have to replace the damn thing I will, but I dont want to go that far in to replace it if I dont have to.

[Precise1]

Odds are that if something else is tripping the knock sensor code, it will post a code also. FYI the knock sensor doesn't have to be where it is located, a few people have relocated it. MaritimeMan installed a new one on his bell housing so consider that. Try plugging in a 'new' one to see if that keeps the code from coming up again first.

 

B

[Trogdor636]

Odds are that if something else is tripping the knock sensor code, it will post a code also. FYI the knock sensor doesn't have to be where it is located, a few people have relocated it. MaritimeMan installed a new one on his bell housing so consider that. Try plugging in a 'new' one to see if that keeps the code from coming up again first.

 

B

 

Yea, I'm getting no code other than the knock sensor. So I'm starting to believe it is actually the sensor itself at this point. Thanks B.

[Precise1]

I didn't look, but is there a diagnostic test for the KS in the FSM?? Yeah, over the years I've seen the KS code is almost always one of several, not stand alone.

 

You are welcome.

 

B

[sewebster]

94 FSM, EF+EC 137 there is a simple diagnostic. You measure resistance to ground off of a pin on some sub-harness. Also EF+EC 129 says pin 27 of the ECU (knock sensor pin) should have about 2.5 volts with engine idling.

[Trogdor636]

94 FSM, EF+EC 137 there is a simple diagnostic. You measure resistance to ground off of a pin on some sub-harness. Also EF+EC 129 says pin 27 of the ECU (knock sensor pin) should have about 2.5 volts with engine idling.

 

Man, service so quick I didnt even have to look it up. Someone wanna come check it for me too?

 

Thanks guys!

Edited November 14, 2011 by Trogdor636