*** Restricting New Posts to SD Premium Members ONLY *** (09 May 2025)
Just made a new account? Can't post? Click above.
Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
Ford 5.4 shuts off when hot
- Slomechanic
-
Topic Author
- Offline
- New Member
-
3 years 2 months ago #57459
by Slomechanic
Ford 5.4 shuts off when hot was created by Slomechanic
Hey everyone, I’ve been stuck on this f250 5.4 2004. Original issue was p0171 p0174. Replaced intake manifold gaskets due to vacuum leak.now truck has no cel and shuts off when hot after driving 45 min+.
When it’s about to shut off it’s like it has a vacuum leak, performed smoke test.leak test passed.fuel pressure is within spec.
LTFT 1: - 0.78% at idle
LTFT 2: - 0.78% at idle
MAF: 7.14 g/s
Barometric pressure: 156.59Hz
when truck starts to shut off. LTFT bounce from -8 to +8
Cleaned throttle body,no misfires.
Truck only shuts off after driving up to temp never cold. I’m stuck and I just need some advice. Thank you all for your help.
When it’s about to shut off it’s like it has a vacuum leak, performed smoke test.leak test passed.fuel pressure is within spec.
LTFT 1: - 0.78% at idle
LTFT 2: - 0.78% at idle
MAF: 7.14 g/s
Barometric pressure: 156.59Hz
when truck starts to shut off. LTFT bounce from -8 to +8
Cleaned throttle body,no misfires.
Truck only shuts off after driving up to temp never cold. I’m stuck and I just need some advice. Thank you all for your help.
Please Log in or Create an account to join the conversation.
- Cheryl
-
- Offline
- Platinum Member
-
- Slomechanic
-
Topic Author
- Offline
- New Member
-
- Cheryl
-
- Offline
- Platinum Member
-
- Slomechanic
-
Topic Author
- Offline
- New Member
-
Time to create page: 0.442 seconds