Matts 850 GLT Posted November 27, 2007 Report Share Posted November 27, 2007 HelloI was sitting in traffic and saw a puff of black smoke in my rear view. Checked it out at home and it does it at idle, no codes and no stuttering or stalling. It does use 10% more gas.Am I looking at O2 sensor or cat? Any ideas?? Car is 95 10v 95,000 miles no turbo.Matt Link to comment Share on other sites More sharing options...
YV1LS53 Posted November 27, 2007 Report Share Posted November 27, 2007 I would try cleaning M.A.F sensor to start...Then go from there. Link to comment Share on other sites More sharing options...
Matts 850 GLT Posted November 28, 2007 Author Report Share Posted November 28, 2007 ThanksI cleaned out the tb and hoses in that area but as its a 10v motor the fuel/ign system is different there is no maf sensor just a map sensor and air intake temp sensor.I am considering a hole in exhaust as it sounds like its blowing near the manifold to cat connection, but I can't see a crack or hole.Any ideas?Matt Link to comment Share on other sites More sharing options...
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