- Joined
- February 16, 2001
- Messages
- 5,418
- Reaction score
- 25
- City, State
- 43°48′48″N 91°13′59″W
- Year, Model & Trim Level
- 91 4 do'
While testing my fuel pressure I have ran into an issue that the "search" feature is not helping me find the answer.
1991 Explorer 4.0
*just replaced fuel pressure relay
*fuel pump is a little noisy
*lacking power at wide open throttle
Key on, Engine off---Fuel jumps near 30 then falls below 10
Key on, Engine running--Fuel pressure sits around 30
Key on, Engine at high RPM--Fuel pressure still sitting around 30
Any clue why I have no pressure at the rail when I run the test? This is the same regardless of how many times I cycle the key.
1991 Explorer 4.0
*just replaced fuel pressure relay
*fuel pump is a little noisy
*lacking power at wide open throttle
Key on, Engine off---Fuel jumps near 30 then falls below 10
Key on, Engine running--Fuel pressure sits around 30
Key on, Engine at high RPM--Fuel pressure still sitting around 30
Any clue why I have no pressure at the rail when I run the test? This is the same regardless of how many times I cycle the key.