Question? About ECU code 3-04 and Air Filter
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Joined: Jun 2001
Posts: 107
Question? About ECU code 3-04 and Air Filter
I'm getting a 3-04 Code Knock Sensor.. what would cause this.. and now I dont use lower grade gas I put 91 here in LA.. and now how do I go about clean the JWT Pop charger?
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Joined: Aug 2000
Posts: 2,835
The FSM lists the following as the diagnostic procedure for the knock sensor:
1) Loosen and retighten engine grounds in front of intake manifold collector
2) With engine off, check for continuity between terminal 1 of knock sensor connector and ECM terminal 64. If there is a short, repair the harness of connector.
3) Check resistance between terminal 1 of knock sensor connector and ground. Values should be between 500-620 k-Ohm. If not within spec, replace knock sensor.
As for cleaning the cone, use the K&N cleaning kit and follow the directions on the box.
1) Loosen and retighten engine grounds in front of intake manifold collector
2) With engine off, check for continuity between terminal 1 of knock sensor connector and ECM terminal 64. If there is a short, repair the harness of connector.
3) Check resistance between terminal 1 of knock sensor connector and ground. Values should be between 500-620 k-Ohm. If not within spec, replace knock sensor.
As for cleaning the cone, use the K&N cleaning kit and follow the directions on the box.
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