40° at night, cold start, truck starts fine, ran it for 30 seconds to back it into my driveway. Next morning, 40°, start the truck, truck is running like it has a heavy cam in it. Loping at idle, but my injector balances won't display at all. No CELs. Figured it was a closed injector, but it never got better. Seems low on power, engine shakes the whole truck at idle. Engine note is completely different at WOT. FRP stays constant with what the Desired is. Swapped the fuel filter and added additive and it made barely any difference. Help?
Update:
Took it to the stealership, they said the ECM is having problems communicating with the fuel system. It's "intermittent" where it'll sense it and drop it, hence why it won't throw a code. Also said my BCM chassis ground connector is showing high resistance, but I cleaned that with no luck.
Where and what wires should I look for, for the "fuel system?" They want to try a new ECM and see if that fixes it...
Update:
Took it to the stealership, they said the ECM is having problems communicating with the fuel system. It's "intermittent" where it'll sense it and drop it, hence why it won't throw a code. Also said my BCM chassis ground connector is showing high resistance, but I cleaned that with no luck.
Where and what wires should I look for, for the "fuel system?" They want to try a new ECM and see if that fixes it...
