Fuel delivery issues please help!!!!!
#1
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Year: 1988
Model: Cherokee
Engine: 4.0
Fuel delivery issues please help!!!!!
ok so it started off with a bad throttle position sensor, replaced that, then it started to feel like it had no power so i replaced the fuel injectors and the spark plugs, now it doesnt idle properly and it likes to try to cut out while driving mainly between 35-55 mph... any thoughts???
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Year: 1988
Model: Cherokee
Engine: 4.0
#5
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Year: 1999
Model: Cherokee
Engine: 4.0
have you tried running seafoam through it? mine will randomly die as well..my TPS was my problem but im not sure what is all different on the 88s vs 97+.. is there a CEL on? id also check your O2 sensor
#6
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Year: 1988
Model: Cherokee
Engine: 4.0
yeah i actually did start off with seafoam and it worked awesome, and my tps just got replaced about a week ago, so today i just dropped tank and scrubbed it out and put new fuel pump strainer on cuz i found the old one to be clogged and it is runnin great now!!!
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#8
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Year: 2000
Model: Cherokee
Engine: 98 4.0 I6
i bought a 2000 with blown 4.0 // it sat a year // put my 4.0 from my wrecked heap in it // took almost a year to put engine in and swap from auto to man tranny // running // it idles funny and almost cuts out then revs up a lil // also will cut out a little bit when first driving and loose power and sometimes backfire // im thinking its the gummed up fuel in the pump or possible the injectors // i guess i need to drop the tank and clean that and pump? // what and how does seafoam work? //
#10
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Year: 1988
Model: Cherokee
Engine: 4.0
ok so its runnin waaayy better but still not quite perfect... thinking maybe my idle air control valve needs replacing... wat ya think?
#14
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Year: 1988
Model: Cherokee
Engine: 4.0
hahah i just used mine up grr... lol hey i posted up some pix of the new 88 xj daily driver project. check it out and lemme know what ya think of some of my own upgrades, nothing major mind ya, mainly asthetics
#15
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Year: 1988
Model: Cherokee
Engine: 4.0
ok so i just went and got it smogged and it passed everything except for the NO(ppm) part whcih max is like 725 and it rated at 935... any ideas how to lower this number... im thinking better spark plugs and another dose of seafoam... any other ideas?!?!?!?!?