88 Cherokee cranks but wont start
02-03-2014, 06:04 PM
#1
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Year: 1988
Model: Cherokee
Engine: 4.0 L
88 Cherokee cranks but wont start
88 Cherokee Laredo, automatic transmission. The problem, went to my Jeep this morning to start it up and started up just fine and waited for it to warm up a little then a few minutes later it had a really rough idle so i figured it was low on gas. Threw it in gear and tried to get to the gas station and half way up the driveway it died on me and at the time i was flooring the gas pedal, parked it and tried to start it again and all I get is a strong crank like it wants to start. Tried it again and all it does is crank. All i can think of is either a bad CPS or a bad fuel pump but it may be something simple...
02-03-2014, 06:49 PM
#3
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Year: 1988
Model: Cherokee
Engine: 4.0 L
Cheeck for spark step 1.....How Do I test my car for spark? Here's how to! - YouTube
Checked, all have a spark and spark plugs are good as well
02-03-2014, 07:20 PM
#4
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Check the tube from the throttle body to MAP sensor. If it's messed up in any way, it will run pig-rich.
02-03-2014, 08:13 PM
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
If you have another vehicle (Chevy 88-99) or buddies Jeep borrow the MAP and see if it works that way, sure fire way to find a bad MAP.
Other than that "cruise" through Cruisers tips for a good start.
Other than that "cruise" through Cruisers tips for a good start.
02-03-2014, 08:22 PM
#7
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Year: 1988
Model: Cherokee
Engine: 4.0 L
I'll do that sometime tomorrow, and I actually did that a few weeks ago, everything was good until now...
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02-04-2014, 09:27 AM
#11
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Year: 1989
Model: Cherokee
Engine: 4.0
My 89 did that it was the fuel pump reisiter on the inner fende ron the drivers side it looks like anpeice of ceramic with 2 plugs on it u can unhook the wires and jump them with a small wire and see if that helps mine would run for a few minutes then die like a bad fuel pump
02-04-2014, 09:50 AM
#12
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Year: 1988
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02-04-2014, 10:02 AM
#14
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Year: 1988
Model: Cherokee
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My 89 did that it was the fuel pump reisiter on the inner fende ron the drivers side it looks like anpeice of ceramic with 2 plugs on it u can unhook the wires and jump them with a small wire and see if that helps mine would run for a few minutes then die like a bad fuel pump
02-04-2014, 10:10 AM
#15
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Year: 1989
Model: Cherokee
Engine: 4.0
No just unplug the wires on either end of the resistor and cross them over with a small peice of wire u could omh the reistor with a multi meter but I dont know the exact numbers it should be