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'97 Tahoe 5.7L running rich
3 messages, Last post on Aug 22, 2010 at 4:03 PM
You are in the Chevrolet Suburban & Tahoe Forum.What is this discussion about? Chevrolet Tahoe, Fuel System, SUV
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#1 of 3 '97 Tahoe 5.7L running rich by hchristiansen
Nov 23, 2007 (3:07 pm)
I recently changed the fuel pump in my '97 Tahoe and thenext day the SES light came on. I scanned the trouble
codes from the VCM and it turns out that both banks are
running rich. Chilton manual confirms that the codes
indicate a rich mixture condition.
The problem is that the Chilton manual does not give me
any idea of how to correct the problem.
Anybody seen this and what did you do fix it?
Thanks, Howard
- 99tahoe1 (Nov 23, 2007 3:38 pm)
- jjipson (Aug 22, 2010 4:03 pm)
Replies to this message:
#2 of 3 Re: '97 Tahoe 5.7L running rich [hchristiansen] by 99tahoe1
Nov 23, 2007 (3:38 pm)
Replying to: hchristiansen (Nov 23, 2007 3:07 pm)
Hey ya i did the same thing and now i have the same problem also if you have gotten any ideas let please let me know thanks a lot
#3 of 3 Re: '97 Tahoe 5.7L running rich [hchristiansen] by jjipson
Aug 22, 2010 (4:03 pm)
Replying to: hchristiansen (Nov 23, 2007 3:07 pm)
same here, truck died, replaced pump, truck ran(sort of) replaced airflow sensor, ran good, but rich, ses lite on, scanned,6 codes, O2 sensor,insuficent catalyst, R+L bank, rich-R+L bank. changed #2-L O2 sensor, ses still on, still rich. don't know why! 
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