Novak Conversions Jeep Wrangler YJ engine mounts

Problem with my 89 carbureted YJ

Sting67Ray

New Member
Joined
Apr 13, 2025
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2
Location
Potsdam NY
Hi, I have a '89 YJ that I have had for 10 years that has a problem that I cant figure out, after driving for about 10 mins it starts surging and finally dies. I was thinking originally it is a carb problem, and replaced the carb with a new motorcraft. The problem is still there, next I replaced the fuel sending unit, still no love, lastly I went thru the ignition and put in new wires, plugs, coil, etc.....still no love, anyone have anything else to try? Jeep is a 4.2 Auto.

Thanks,
Tom M
 
Last edited:
Evening...fuel sending unit? Do you mean the fuel pump? Try changing that, then the fuel filter. If that's GTG consider your vacuum system.
 
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Novak Conversions Jeep Wrangler YJ engine mounts