1999 Chev Tracker

ccrsedona · 06-02-2008, 01:37 AM

Everything in the emissions system checks out. Still runs rich, nobody has the answer except I did find one EPA bulletin campaign #SM-2935, case defect 1295. RE: Won't start in cold weather because of rich fuel mixture. Well that's the only reference I could find that admitted there is a problem with the factory fuel mixture `settings. IE: my 99 Acura with a 3.2L full size car gets the same gas mileage as the Tracker (Suzuki Vitara 2.0L) to be more exact. I keep reading about many CatConverters and O2 sensors people are replacing because of this. Is there a fix for this problem? (Rich fuel mixture)

The Factory Man · 06-07-2008, 05:19 PM

Are you getting a Check Engine light with a stored code? How do you know it is running rich? Usually a richer fuel mixture is required on a cold start.

06-02-2008, 01:37 AM	#1 (permalink)
ccrsedona Walking Join Date: Jun 2008 Posts: 1	1999 Chev Tracker Everything in the emissions system checks out. Still runs rich, nobody has the answer except I did find one EPA bulletin campaign #SM-2935, case defect 1295. RE: Won't start in cold weather because of rich fuel mixture. Well that's the only reference I could find that admitted there is a problem with the factory fuel mixture `settings. IE: my 99 Acura with a 3.2L full size car gets the same gas mileage as the Tracker (Suzuki Vitara 2.0L) to be more exact. I keep reading about many CatConverters and O2 sensors people are replacing because of this. Is there a fix for this problem? (Rich fuel mixture)

06-07-2008, 05:19 PM	#2 (permalink)
The Factory Man 2.5L Iron Duke Join Date: Mar 2008 Location: Danielsville, PA. Posts: 27	Re: 1999 Chev Tracker Are you getting a Check Engine light with a stored code? How do you know it is running rich? Usually a richer fuel mixture is required on a cold start. __________________ 33 years with General Motors Product Service Engineering. A.S.E. Certified.

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