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wfot · 10-17-2021

have you check/replaced the TPS? the best closed throttle voltage is .53 volts and it should be near 5.0 volts at WOT.

Another point I would like to make and have made before, I always use GM parts, aftermarket parts are designed to "fit" multiple applications and can vary in what they read and how they deliver the information.

the LT5 runs on electronic input and is based off of the MAP sensor for all fueling, GM designed all of the programing off of very specific outputs and the small variations in aftermarket parts can collectively have an effect on the performance of the engine. IMO

John

10-17-2021	#6
wfot Join Date: Jan 2009 Location: New jersey Posts: 155	Re: Idle Quality Issue have you check/replaced the TPS? the best closed throttle voltage is .53 volts and it should be near 5.0 volts at WOT. Another point I would like to make and have made before, I always use GM parts, aftermarket parts are designed to "fit" multiple applications and can vary in what they read and how they deliver the information. the LT5 runs on electronic input and is based off of the MAP sensor for all fueling, GM designed all of the programing off of very specific outputs and the small variations in aftermarket parts can collectively have an effect on the performance of the engine. IMO John