justin0469
20+ Year Contributor
- 1,004
- 10
- Apr 4, 2003
-
san diego,
California
so every now and then i get the P0170 code which is fuel trim malfunction. From searching on here this code comes from the fuel trims being maxed out (or at the minimum) and still not working right. I have 720cc injectors, 255pump and aeromotive afpr. i have the fpr set at 43psi without the reference line. I do have a 6bolt though, does that mean i should have the fuel pressure set at 37psi since its a 1g engine? My o2s bounce back and forth fine when at idle or cruising. and at WOT the ecu doesnt care about fuel trims so it wouldnt throw the code right? is it just happening only sometimes randomly going out of the fuel trims? any ideas?
