Quote:
Originally Posted by 97 SL320
I don't know what those codes are, do you have a chart?
95 might have a OBD2 port under the dash, have a look as you will get more codes and sensor values.
If this has OBD2, there will be a front and rear O2 sensor, you need to measure the front one.
Pull the vac hose off the fuel pressure regulator and see if liquid fuel is coming out.
Also, measure the voltage at the mass air flow sensor, if it fails, it may still run but go into limp mode.
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Yeah, no obd2. The led code is "bad lambda" the blink code is "o2s, fuel mix lean or rich". I assume rich based on mpg drop and smell from exhaust.
I'm not 100% sure which vacuum hose is fuel pressure regulator, can post a picture later of the one I think it is, but it was bone dry. Car runs and starts really smooth so the o2s being out and mix being constantly rich makes sense.
Question, can I test the voltage change on o2s without having it connected under the passenger seat? I've seen people say both connected and unconnected and want to make sure it doesn't matter to the voltage readings.
Any way to easily check if the catalytic converter is bad too? (I hear that can cause o2s to fail, etc.)
Will retest today and put in a new o2s today if it fails, just scared of what else this might need done to pass emissions!