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andy454
04/22/2003, 07:40 AM
Well my wife to be called me the other day from work and said her trooper started to stall at idle and the check engine light came on. I got a scanner and checked the codes.
Bank 1 and 2 lean. I monitored the o2 sensors and bank 1 was switching normally but bank 2 was stuck at 89mv. Bank 2 sensor 2 was also low. Fuel trims on both banks was +40%. I sprayed some brake cleaner near the intake gasket and as soon as I did the 02 sensors would go full rich. You could actually hear it suck in the fluid. Just thought I would throw this out for everyone. Perhaps you could use some of the info to give to your dealer if you have a stalling concern.
Andy

Moncha
04/22/2003, 07:48 AM
Thanks Andy!! You are a true wealth of info!!

SGT.BATGUANO
04/22/2003, 10:41 PM
Why are the intake gaskets failing? that never happens to a small - block chevy?;wtf;

andy454
04/23/2003, 07:05 AM
The upper intake is plastic and the lower is aluminum. They expand at different rates and this causes wear on the gasket as this occurs.