Ok, I have a '94 Jeep Grand Cherokee and the engine light came on yesterday. I tested it using a OBD scan tool that I have and it gives me the trouble code #52. Using the included software and Haynes manual it says "Oxygen sensor signal input indicates rich air/fuel ratio condition during engine operation." Question is, what are the possible causes that would be triggering this code. I have done extensive searching on the internet with no help. I also did testing using a digital multimeter on the MAP sensor, the Air Charge Temperature sensor, and the Throttle Position sensor(TPS) and all were within limits EXCEPT the TPS. It was off just a fraction in the voltage allowed but that should send it's own signal, shouldn't it? I have not checked the O2 sensor yet but will, that is suppsed to throw it's own signal too I thought.
2007-10-17
10:23:13
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3 answers
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asked by
msdz2000
4