Starting issue
#1
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Join Date: Oct 2011
Location: Danville IL
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Year: 1999
Model: Cherokee
Engine: 4.0
Starting issue
Hey guys, my 99 has been having trouble starting. I just put in a new fuel pump and crank sensor. The jeep will sometimes just crank and crank on the first attempt to start it, but it almost always starts up on the second try. Just recently it got pretty cold at night and it took 5 times to get it start. It mostly happens after sitting for awhile. Any ideas where I should look now?
#5
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Year: 1999
Model: Cherokee
Engine: 4.0
its a bosch fuel pump. Alot more expensive but ya get what ya pay for. And yeah it usually runs great after it starts. occasionally when the jeep is cold and under accel it hesistates then takes off and runs fine.
I didnt even think about the regulator!!!
I didnt even think about the regulator!!!
#6
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Year: 1999
Model: Cherokee
Engine: 4.0
So to confirm, you replaced ONLY the pump part of the fuel pump assembly?
I always recommend replacing the entire assembly while you're at it............
I always recommend replacing the entire assembly while you're at it............
#7
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Year: 1999
Model: Cherokee
Engine: 4.0
I replaced the whole assembly so that means I got a new regulator? I was just out checking the pressures and it runs about50 under cranking and 53 while running
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#10
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Year: 1999
Model: Cherokee
Engine: 4.0
yeah i replaced the pump before the crank sensor, but i plugged it in a work (I work at a garage, and convinced my boss to let me use the scan tool) and got an ASD relay code. replaced the relay, jeep starts great.
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