zerodevil
Explorer Addict
- Joined
- March 24, 2008
- Messages
- 1,436
- Reaction score
- 22
- City, State
- Anchorage, AK
- Year, Model & Trim Level
- 2008 White Limited V8
Hello Ladies and Gents.
I have been working to restore my 2003 explorer to its old glory. A month or so ago I developed a stutter while the vehicle is under load (5th gear exclusively), at low RPM and Highway speed. I gave the old girl a nice tune up (fuel filter, clean air filter, clean MAF, clean IAC, Ford spark plugs, and verified ignition coils in working order on primary and secondary sides) and produced no change. Next I did a compression test and everything checked out fine.
My next step was to do a fuel pressure test, I am getting 22 Psi before starting the truck, and 68 Psi after starting. The first # is below spec for a 2002 manufactured truck, and the 2nd # is above. Leads me to believe i have a failing fuel pressure regulator?
Any advice on this one?
*EDIT* Also forgot to mention truck is fairly modified, and has ~185,000 miles.
I have been working to restore my 2003 explorer to its old glory. A month or so ago I developed a stutter while the vehicle is under load (5th gear exclusively), at low RPM and Highway speed. I gave the old girl a nice tune up (fuel filter, clean air filter, clean MAF, clean IAC, Ford spark plugs, and verified ignition coils in working order on primary and secondary sides) and produced no change. Next I did a compression test and everything checked out fine.
My next step was to do a fuel pressure test, I am getting 22 Psi before starting the truck, and 68 Psi after starting. The first # is below spec for a 2002 manufactured truck, and the 2nd # is above. Leads me to believe i have a failing fuel pressure regulator?
Any advice on this one?
*EDIT* Also forgot to mention truck is fairly modified, and has ~185,000 miles.