Bergenser1
Newbie
I am at an absolute loss with my truck, maybe somebody here has an idea....
It has a new GM Goodwrench Performance crate engine (JEG'S part number 809-12681430), was installed summer 2018, and has less than 3k miles. Transmission was rebuilt earlier this year, less than 300 miles, and a JET Performance ECU was installed. I have flipped ECU,s, with no different outcome. I have had nothing but trouble with it lately, it idles fine, but as soon as it has a load, it sputters and backfires. I have tried 2 different distributors, replaced TPS and all temp sensors, runs fine on idle, and at all rpm's, when no load, but cant handle a load. If I floor it, it runs right up on rpm, and runs fine, but regular driving is no good. Anybody have any idea?
It has a new GM Goodwrench Performance crate engine (JEG'S part number 809-12681430), was installed summer 2018, and has less than 3k miles. Transmission was rebuilt earlier this year, less than 300 miles, and a JET Performance ECU was installed. I have flipped ECU,s, with no different outcome. I have had nothing but trouble with it lately, it idles fine, but as soon as it has a load, it sputters and backfires. I have tried 2 different distributors, replaced TPS and all temp sensors, runs fine on idle, and at all rpm's, when no load, but cant handle a load. If I floor it, it runs right up on rpm, and runs fine, but regular driving is no good. Anybody have any idea?