JnJ
NAXJA Forum User
- Location
- San Antonio TX
Ok, the Haynes manual I have states that there are two different electronic fuel pumps, one for MPI and one for TPI. I believe the TPI was used on the 2.8s and 4 cyl. I know my 87 XJ 4.0 uses MPI, all Jeep 4.0s do. I have a used parts dealer saying that he has pumps for 87 - 90 4.0 and 91+ HO 4.0, is there a difference between the HO and Non-HO 4.0 fuel pumps.
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