ll77 Posted March 11, 2011 Report Share Posted March 11, 2011 Hi everyone My car is running lean at idle and rich at speeds over idle. I know this because a smog technician told me, and my rough idle can be smoothed out by manually adjusting the a/f ratio from the afm at idle to inject more fuel. This is only at idle, it is much smoother at startup (~1000 rpm) than when warmed up (~800 rpm) so it can't be the cold start valve. I have checked and adjusted the tps. I am also running very rich at speed, so perhaps the previous owner overcompensated for the problem somehow. Any suggestions? Quote Link to comment
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