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Old Yesterday, 08:58 AM   #1
Joyridin
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Join Date: Sep 2020
Location: Cleveland, Ohio
Posts: 545
Re: LS3 - 408 Popping - 6L80e not shifting ....

Quote:
Originally Posted by biketopia View Post
You need a way to log or view what the fuel pressure is doing under load. My Camaro would hold 55-60 psi all day at idle, light driving, and free revving, hammer on it and it would drop down to under 10psi. The ECU did everything it could to keep the engine running, found a leak inside the tank from the pump line, fixed it and fixed the issue I was having. New doesn't always mean it works. Not saying you did anything wrong, just never hurts to verify.
Mine did the same thing, except it ended up being a plugged filter. I had the car painted and apparently, dirt/dust got in the gas tank. The car ran fine going down the road, but get on it a bit and it would fall on its face. I did what you did with the external gauge and BAM! There is was.
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