Ok I got the CPS out, not too hard just took my time and didn't force anything. I checked the resistance and it was 504 but the car starts and runs well until it has been at operating temperature for a while and then fails so I carefully heated the sensor and checked again, it was 580 and climbing, still not as hot as it would be stuck to the front of the motor, should it change that much as it heats up or should it stay the same? The testing instructions do not say to test only when cold so does that mean it makes no difference and my readings say the sensor is failing with heat. Further to this I tried heating again, the first time it was warm to touch but this time I went a bit further, more to where the engine would get it to, I held it not in but a good 6 inches above a flame until it was too hot to hold but well below where it would melt the plastic part above the sensor the reading was 650 well out of range. I watched the meter drop one point at a time as it began to cool but only time will tell if this was the problem now I wait for the new part.
Last edited by Ferrett 1962; 08-06-2012 at 04:27 AM.
1995 525i 225,000km Still stock for now
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