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REALLY BAD hesitation

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Old Sep 4, 2010 | 08:15 PM
  #1  
ellisfan77's Avatar
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From: chesapeake
Year: 1998
Model: Cherokee
Engine: 4.0L
Default REALLY BAD hesitation

ok today i went out to start my jeep at 6a.m. and it started fine well second crank its never started on the 1st for me then i went to work and back and then to the mall with my girl then i reved my engine in the garage before then when we were leaving the mall it started i have a 98 xj sport with auto trans and outta no where i was barely going any where then i punched it and it was fine then i went to the advanced auto parts and they said my trans could be bogging it down due to fluid so i changed that and added lucas tranny treatment still had the problem they said clean throttle body did that and still had the problem and at first it was only as i was accelerateing but i left it running without the intake tube attached and it started sucking air like f*n crazy and had a really bad idle in park now i tried the unplug and plug in thing with the sensor connectors and it was still doing it i need help fassst my girlfriend is due to have our baby anytime HELP please! and my gas also went from a quarter tank to an eigth in like 10 mins and ive searched all the other posts and couldnt find a problem like im haven
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Old Sep 4, 2010 | 08:17 PM
  #2  
99WhiteLightning's Avatar
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From: Western NY
Year: 1999
Model: Cherokee
Engine: 4.0L I6 Power Tech
Default

get the fat girl outta your trunk
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Old Sep 4, 2010 | 08:19 PM
  #3  
xjmuddigger's Avatar
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From: DIRTY SOUTH
Year: 1991
Model: Cherokee
Engine: 4.0 ho
Default

have u checked your throttle cable to see if its loose? or clean your injectors?
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Old Sep 4, 2010 | 08:49 PM
  #4  
ellisfan77's Avatar
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From: chesapeake
Year: 1998
Model: Cherokee
Engine: 4.0L
Default

it just started happening today and from doing my research and hearing all these guys haven to buy all these sensors before they figure it out was maken me worry so i havent done anything but what the advance auto parts guy said bc i cant throw money at my jeep for a couple months but if it was the ijectors it would do it cosistently wouldnt it?
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Old Sep 4, 2010 | 08:52 PM
  #5  
xjmuddigger's Avatar
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From: DIRTY SOUTH
Year: 1991
Model: Cherokee
Engine: 4.0 ho
Default

i aint sure,but u can get a bottle of injector cleaner for $5 and it wouldnt hurt and might clean em and help
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Old Sep 4, 2010 | 09:36 PM
  #6  
ellisfan77's Avatar
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From: chesapeake
Year: 1998
Model: Cherokee
Engine: 4.0L
Default

yea im going to get everything i need to do a complete tune up tommorow and i didnt even think about it but i have a complete xj in my moms back yard that was wrecked but mechanically perfect so im going to go and start switching sensors until i figure out wich one it is but hopefully ill find the problem
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Old Sep 4, 2010 | 09:44 PM
  #7  
xjmuddigger's Avatar
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From: DIRTY SOUTH
Year: 1991
Model: Cherokee
Engine: 4.0 ho
Default

yea,do that,get ngk spark plugs,there the best and there cheap
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Old Sep 4, 2010 | 09:53 PM
  #8  
ColoradoJeepXJ's Avatar
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From: Lakewood, Colorado
Year: 1990 2dr base
Model: Cherokee
Engine: 4.0L
Default

when did you last put fuel in it? just before the problem?
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Old Sep 4, 2010 | 10:08 PM
  #9  
ellisfan77's Avatar
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From: chesapeake
Year: 1998
Model: Cherokee
Engine: 4.0L
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yea realativly speaking right before and a full tank barely last me 2hundred miles
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Old Sep 5, 2010 | 02:47 PM
  #10  
ellisfan77's Avatar
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From: chesapeake
Year: 1998
Model: Cherokee
Engine: 4.0L
Default

ok so today i replaced my distributer cap and button and wires and spark plugs put lucas fuel injector cleaner in and took aprt and used connector cleaner on allll conectors going to the engine and was still having the problem then cleaned my throttle control motor still had the problem then diconected everything leading to the MAP sensor and it seemed like it was idleing rough but i drove it around my neighborhood and nothing then drove the big circle around my neighborhood and she still didnt do the hesitation but im still worried that i didnt fix the problem< does it sound like it could be the MAP sensor or does it seem like i should still change out sensors
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