LeighRay
New Member
- Joined
- September 1, 2006
- Messages
- 7
- Reaction score
- 0
- City, State
- Euless, Texas
- Year, Model & Trim Level
- 99 3.0 4X4 Ranger Super
Anyone have an Idea whats wrong? After replacing my fuel pump on the way home my CEL came on. The codes are the all to typical 0171 and 0174. Ive checked for leaks replaced O2 sensors new fuel filter new pcv ran seafoam through the fuel tank with no luck at all codes keep coming back. Oddly enough if I run without an air filter the codes seem to take longer to come back. Checked for vacuum leaks with starting fluid with no luck. I am stumped on this one. Plan to do a fuel pressure test this weekend other than that im not sure what to do next. I have a 1999 Ranger 4x4 with 3.0 with a fuel system return. the Regulator/ is on the fuel rail. The original reason I changed the fuel pump was intermitant operation. No codes until the new one was installed