rangerpilot
New Member
- Joined
- Nov 28, 2013
- Messages
- 54
- Reaction score
- 1
- Points
- 0
- Vehicle Year
- 1999
- Make / Model
- Ford
- Engine Size
- 4.0l V6
- Transmission
- Manual
I have been getting a "too lean" MIL code on both banks and while I preemptively replaced the O2 sensors, that did not fix the issue. So, I dug into the problem and have eliminated a vacuum leak (checked with a pressure gauge ... stayed in green under all conditions except fast / high rev of throttle)
I check the fuel pressure and only get a constant 40 psi under all conditions. According to the Haynes manual for the 4.0 liter V6, the range should be between 56-72 psi.
Is the regulator the first step to investigate? I have a new fuel pump (less than two years old) however the regulator and sender unit (both in the tank) are original and are only sold as an assembly at AutoZone.
I really feel this is the problem but don't want to spend $200+ for a new assembly is there is something else I should try first.
Oh...replaced fuel filter ... no change in symptoms.
Thanks
I check the fuel pressure and only get a constant 40 psi under all conditions. According to the Haynes manual for the 4.0 liter V6, the range should be between 56-72 psi.
Is the regulator the first step to investigate? I have a new fuel pump (less than two years old) however the regulator and sender unit (both in the tank) are original and are only sold as an assembly at AutoZone.
I really feel this is the problem but don't want to spend $200+ for a new assembly is there is something else I should try first.
Oh...replaced fuel filter ... no change in symptoms.
Thanks
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