- Joined
- Jul 11, 2011
- Messages
- 660
- Reaction score
- 129
- Points
- 43
- Location
- Central Texas
- Vehicle Year
- 1992
- Make / Model
- Ford
- Engine Type
- V8
- Engine Size
- 5.0
- Transmission
- Manual
- 2WD / 4WD
- 4WD
5.0 EFI, KOEO works fine, codes 23, 31, 67,81, 95. Messing with the TPS which is new to get that fixed, EGR is not present(31/81), A/C not connected (67)and the 95 is because the ECU is not monitoring the fuel pump. Can't get it to run the KOER tests. I've read on another forum that this may be caused by no Neutral signal to the ECU. Could this be the problem or is there something else I need to check. This A9L ECU also had a chip installed before--could that be causing problems?