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-   -   service engine soon light (https://chevroletforum.com/forum/silverado-sierra-fullsize-pick-ups-21/service-engine-soon-light-28155/)

dmann13815 Nov 20, 2009 7:22 AM

service engine soon light
 
Installed true duals on my 87 Chevy R10. Its a 350 with TBI and though it hasn't had a catalytic converter since I owned it, I didn't have engine light due to the single 2" tail pipe. Now with more flow (2 1/4) and the thrush mufflers, the lights coming on for what is safe to assume O2 sensor. The light bugs me! I really don't want to disable the lite and would prefure to try to remedy the problem without installing converters. I guess what I'm looking for is some tricks to fool the computer. If anyone has any ideas I would love to hear them, I was thinking of installing 14 inch sections of 2" where the cats would go to create some backpressure for the O2 sensor. Just a thought I was pondering.

desrtrat Nov 20, 2009 3:48 PM


Originally Posted by dmann13815 (Post 121150)
Installed true duals on my 87 Chevy R10. Its a 350 with TBI and though it hasn't had a catalytic converter since I owned it, I didn't have engine light due to the single 2" tail pipe. Now with more flow (2 1/4) and the thrush mufflers, the lights coming on for what is safe to assume O2 sensor. The light bugs me! I really don't want to disable the lite and would prefure to try to remedy the problem without installing converters. I guess what I'm looking for is some tricks to fool the computer. If anyone has any ideas I would love to hear them, I was thinking of installing 14 inch sections of 2" where the cats would go to create some backpressure for the O2 sensor. Just a thought I was pondering.

need to find out what code it is. also you do not need or want back preasure..

good luck


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