riproost Posted January 1, 2015 Share Posted January 1, 2015 I am trying to locate the fuel pump ballast on my 89 mj sport 2.5. I don't see it on the driver side inner fender. Any suggestions? Happy New Year Link to comment Share on other sites More sharing options...
91Pioneer Posted January 1, 2015 Share Posted January 1, 2015 You had one there when it left the factory. Perhaps someone bypassed it, which isn't a big deal. If you know what you are looking for and it's not there, it's probably bypassed. Look near the vacuum line thingy between the air box and the fender. Look for two wires that may be taped/soldered/clipped together. But this begs the question why are you looking for it? Are you have problems? Link to comment Share on other sites More sharing options...
riproost Posted January 1, 2015 Author Share Posted January 1, 2015 Yes, the truck starts then dies after a couple seconds. I removed the radiator bottle and I only have a large harness(plastic conduit) running along bottom inner fender. I see where the ballast was likely mounted but no signs of the wires. I would like to find this connection and see how it was attacked in the past. Guess I have some searching to do. Link to comment Share on other sites More sharing options...
Jeep Driver Posted January 2, 2015 Share Posted January 2, 2015 You'll be looking for a long long time. It doesn't have one. Our pumps only put out 15lbs and I suspect that's why . Check your grounds, fuel pump relay, or the fuel pump itself. Link to comment Share on other sites More sharing options...
nitroxsteve Posted January 2, 2015 Share Posted January 2, 2015 You'll be looking for a long long time. It doesn't have one. Our pumps only put out 15lbs and I suspect that's why . Check your grounds, fuel pump relay, or the fuel pump itself. My 88 has one on the left front fender ( viewed from the drivers seat) why would his 89 not have one unless someone already removed it? Link to comment Share on other sites More sharing options...
Jeep Driver Posted January 2, 2015 Share Posted January 2, 2015 You'll be looking for a long long time. It doesn't have one. Our pumps only put out 15lbs and I suspect that's why . Check your grounds, fuel pump relay, or the fuel pump itself. My 88 has one on the left front fender ( viewed from the drivers seat) why would his 89 not have one unless someone already removed it? Do you have a 4.0 or a 2.5? I have yet to see a 2.5 with one.....nor does mine. Link to comment Share on other sites More sharing options...
nitroxsteve Posted January 2, 2015 Share Posted January 2, 2015 You'll be looking for a long long time. It doesn't have one. Our pumps only put out 15lbs and I suspect that's why . Check your grounds, fuel pump relay, or the fuel pump itself. My 88 has one on the left front fender ( viewed from the drivers seat) why would his 89 not have one unless someone already removed it? Do you have a 4.0 or a 2.5? I have yet to see a 2.5 with one.....nor does mine. My bad I have a 4.0 no experience with a 2.5 Link to comment Share on other sites More sharing options...
91Pioneer Posted January 2, 2015 Share Posted January 2, 2015 Whoops I know little about the 2.5, disregard my earlier post LOL Link to comment Share on other sites More sharing options...
mnkyboy Posted January 2, 2015 Share Posted January 2, 2015 Apparently they got them on the 2.5l in 91. My 89 didn't have one,the 91 harness I used for my MPI conversion does have it. Link to comment Share on other sites More sharing options...
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