Engine wouldn't rev - error code 92 camshaft sensor incorrect signal. Bought and fitted new sensor. Engine won't start. If I hold pedal down, it starts eventually, but peters out. Checked error codes again. Still old code (92) plus code 93 cam sensor voltage low. I did notice that the sensor isn't sitting central in the gap between the cam covers. Any ideas?
It is an ecotec system. I'll check the belt tension. It's driving me crazy. I checked and cleaned the plugs (a bit sooty). I've been trying to think of things I've disturbed, in case I've introduced another factor. I even earthed the ECU case, as it's "dangling" just now. I tried disconnecting the cam sensor to simulate the "original" fault. The engine will idle badly, but won't rev. This is similar to what happened originally.
The fault happened while on the motorway. Cruising happily, then felt a lack of power / response. When I pulled over, it was still running, but wouldn't rev. The engine was very hot.
Weird one. what had happened was the catalytic converter had disintegrated and blocked the exhaust system so the car wouldn`t start, so dave smashed the bits out with a broom handle and now the car is hiting 135 no probs. result Could the cat disintegrating be caused by the sensor failing? Maybe overheated it or something? we were discussing theorys about it in the pub last night but i cant remember what we finally decided onlmao
I should have sussed that one more quickly.
The car is running great now, but the plugs (new 4-point Bosch, can't remember the type offhand)are clean/white centre + electrodes, outer (body)is black.I feel that this indicates either lean mixture, or plug type too hot?
you could try using a digital voltmeter on the lambda sensor output.
at the correct mixture the output should be about 450mV, a lower voltage indicatesthe mixture is lean, a higher one indicates a rich mixture.
unless your lambda sensor is faulty, which coul cause lean running.
you could also get a colourtune from the halfords sale this weekend. they give a decent indication of the mixture.