It could. So would a bad O2 sensor.
I'd try measuring the fuel pressure. Fuel pressure gauges are cheap.
It could. So would a bad O2 sensor.
I'd try measuring the fuel pressure. Fuel pressure gauges are cheap.
I've seen just that happen several times on m20 powered bmw's. The diaphragm in the fpr leaks and the car runs rich at idle because the leaking fuel being drawn into the intake through the fpr vacuum line.
Yank that vacuum line and see if fuel comes out of the vacuum side of the diaphragm.
You can have "pending" codes - some problems need to be detected multiple times before the light goes on. Of course, not all problems get detected.
If you really want to know, read the codes.
a bad FPR will also cause hard warm/hot starts
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