Atk LNF

[Jkwmtrsp]

I've got a new ATK LNF 2.0 with stand alone harness, it starts right up but just runs for a 2 seconds then shuts off. Anyone know what fuel pressure should be on low side? Do I need a regulator? I've got 59-61 according to OBD2 . Any ideas I'm not sure where to go from here.

 

[Gtstorey]

By stand alone harness do you mean aftermarket ecu?

 

[Jkwmtrsp]

I've got a ecu from a 09' Pontiac solstice that's been reprogrammed for stand alone

 

[G Atsma]

Sounds like VATS rearing its ugly head....

 

[Jkwmtrsp]

I've been reading a lot of post on here , some from a few years ago. Do you know if anyone has figured out how to disable vats on the Bosch E69 ? I paid what I thought was a capable business to build my harness and ecu and its turned into a real headache....

 

[pisco]

My lnf did that when it was in the wrecked cobalt.
mended up being from broken intercooler.
I unplugged the maf and it ran fine. Any chance the maf is in backward or you have a massive leak after it?

 

[Jkwmtrsp]

My lnf did that when it was in the wrecked cobalt.
mended up being from broken intercooler.
I unplugged the maf and it ran fine. Any chance the maf is in backward or you have a massive leak after it?

I already tried unplugging the MAF and everything else is all new checked and double checked I am pretty sure my problem is I had swap specialty build my harness and did the PCM its garbage just like the company.