knock sensor failure

J

japakos

Member +
A while ago 52 error came on and my knock sensor was off. I replaced it with a good one (OEM) off another 4efte engine , worked for 4 days and today the same thing.. off.. 52 error check engine light on and rich condition etc etc. I have triple checked the wiring with a multimeter and everything is fine. The wire is 100% good as well as the plug too. Is it my luck? Or I have to worry about it?
 
J

japakos

Member +
I'm going to run a wire from the cabin directly outside of the car to drive it like this. I hope that's not the ground that causes me the problem and it's the signal wire. Don't know what else to think
 
Last edited:
Jay

Jay

Admin
I've encountered a duff knock sensor before. Melted my head and a fresh sensor was the last thing I could think of. I'm guessing they are susceptible to impacts just like regular sensors. Worth a punt if you are sure the wiring is good.
 
J

japakos

Member +
Well, I just ordered a couple of new ones and see what happens. I don't want to mess with the wiring as it is intact! I measured the wires and they are good! and I twisted them while doing this. It's not the wire! It's my damn luck that's what it is. 2 in a row and one lasted 4 days.
 
J

japakos

Member +
Either the car is playing with me, or I don't know what to say really. I checked the sensor and it wasn't as tight as it's supposed to be so I screwed it back in place tighter. I wrapped around it a wire and connected it to the ground. No CEL , no nothing, no rich condition. Car is driving normal again.. WTF!?!
 
dac69er

dac69er

Super Moderator
I wouldn't do that, it will affect it's operation.

Use a Little loctite if you are worried about it coming loose again. But if you do it up and tight it shouldn't come loose, especially as quickly as yours has!?
 
J

japakos

Member +
Yes something like loctite. Just to hold it in place. It's not the easiest thing to tight and screw unscrew that thing!
 
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