Gegecat911
Member
99 5.4 have replaced plugs, coils, MAF, fuel filter, Cleaned egr/tb. Checked fuel pressure ok at 37psi. Unplugged each injector seems to be working properly. Loss of power on take off shudders bad on highway. No cel or codes checked with multiple diagnostic computers no issues found. Measured temp of cat's bank 1 and 2 same temp.
Runs bad 80% of the time, other times normal. I'm at a dead end here with no codes popping up. Thought it was fuel related checked everything seems ok.
Any ideas or others with a similar problem in the past? Any ideas would be appreciated.
Runs bad 80% of the time, other times normal. I'm at a dead end here with no codes popping up. Thought it was fuel related checked everything seems ok.
Any ideas or others with a similar problem in the past? Any ideas would be appreciated.