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I have a problem with my 99 9-3.
I am not losing any oil and virtually no coolant (could have gone down before by working out air bubbles after I had the system open). The car is running rich at idle and very rough. I can see black smoke (and smell it) coming out the tailpipe at idle.There is no white or blue smoke which would be indicative of oil or water burning.I reset the CEL but I was getting codes before for multiple/random cyl. misfires and lean conditions and o2 sensor bank 1 sensor 1.I also got codes one time for map sensor and cps.
I swapped in a known good fpr,map sensor, and DI cassette from my 97 9000 aero and also put in a new set of plugs-still runs the same or close to the same.I also listened to the purge valve and it is operating at a "constant" freq. at idle. I cleaned it out anyway and checked the hose for cracks-looks good.
I also did the following today:
Cleaned and reconnected a bunch of grounds.
Checked all vacuum lines
Vacuum when warm at idle is about 550 mm HG (not sure of conversion)
Removed IAC valve,cleaned,reinstalled.
I also performed the resistance checks on the IAC valve, TPS,CPS, and IAT sensors and all checked out o.k.
Cleaned throttle body.
I think that's it for now.
Any ideas?
Someone suggested the injectors could be bad but they all have the same black appearance from rich running.I don't think they would all go bad all at once unless something really bad happened.
Question:If front 02 sensor was not working, would it make it run really rich at idle?Still have to check this.
Thanks for everybody's help.
posted by 192.249....
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