What gives? The caspers knock gauge goes to orange when starting the car then back to green. On a few wot passes I get a deep orange or red LED from the gauge but the scanmaster is showing 0.0 or 0.7 max with o2s in the high 700s What do I trust. The car is only pushing about 17lbs max boost.
Knock gauge showing red.. Scanmaster showing 0.0
- Thread starter G NASTY
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JDSfastGN
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- Jun 16, 2001
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the knock gauge interupts the signal from the knock sensor and esc module on its way to the ecm and the scanmaster shows knock retard after the ecm has determined if its worth pulling timing. The gauges are very sensitive to false knock that the scanmaster won't show because the ecm didnt interpret it as real knock.
There was a thread on here that explained if the knock sensor is not wired properly it will cause that to happen. It has something to do with when you crank over the engine it cuts power to the gauge and causes it to stay lit a yellow or red light. it also explained the fix for it.
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