Jump to content
Ultimate Subaru Message Board

check engine light on, knock sensor


Recommended Posts

got a check engine light on, so got out code reader , bad knock sensor, so replaced sensor, cleared code , code came back , so decided to take off + side of battery for awhile , and see what happens , any other suggestions ? thanks

Link to comment
Share on other sites

Known good sensor (or a new one).

 

Seem to be finicky about the route wire takes from sensor up under throttle body. Usually you can see the "clean" mark where the old path was.

 

Some folks say they are finicky about torque. I just make them snug. Never used a torque wrench and haven't had a problem yet.

Link to comment
Share on other sites

97 2.2 awd, a/t. 174.000mi , sensor used, code reader says sensor or circuit , the one i took out was cracked real bad, if it is the circuit where should i look next, ? can the car be driven with no damage ? until i get a new one ,gray connector

Link to comment
Share on other sites

The ones I've bought were 80-100 my cost. Usually I have a used one though.

 

There was a thread a while back about whether this should be an OEM part or not. I don't know if it ever reached a conclusion.

Link to comment
Share on other sites

that was my next question aftermarket or oem ? yes when i did a swap i should have replaced all sensors, but water under the bridge, just ordered a oem 47.00 bucks shipped to me, is there a easy way to change it ? boy it is hard to get in there,

Edited by 86subaru
Link to comment
Share on other sites

A socket with a wobbly and some extensions.... it's not easy. I moved mine to an easier to access location closer to the bell-housing. It's not *that* critical that it be located in exactly that spot. It's sensing detonation and that's going to be felt more or less the same as long as you are near the center-line of the block.

 

GD

Link to comment
Share on other sites

To check the wiring to the sensor just measure the resistance between the ends of the wire. The other end should tie to the ECU. There should be very little resistance between the ends. Also measure the resistace to ground to make sure the wire isn't grounded somehow.

Link to comment
Share on other sites

no mice, i am reading what the code reader says, replaced knock sensor [ oem] check circuit , cleared code, and still getting knock sensor ???no pinging i give up going to take it to the dealer, found out problem broke end off trying to unplug it, now real problem,

Edited by 86subaru
Link to comment
Share on other sites

Please sign in to comment

You will be able to leave a comment after signing in



Sign In Now
 Share

×
×
  • Create New...