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90 jeep cherokee


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mightybowl
Novice

Mar 7, 2008, 5:53 PM

Post #1 of 7 (1730 views)
90 jeep cherokee Sign In

i have a 1990 jeep cherokee with the 4.0 inline six that will not start it has been sitting in my drive way for about six months i parked there it was running fine i have the battery out now charging it but i tryed to jump it and it was like it was not getting gas even know i know that there is gas in it (new air filter and gas filter right before i stopped driving it) i pulled the gas line off just past the filter and gas came out so i dont know


dmac0923
Enthusiast

Mar 7, 2008, 6:56 PM

Post #2 of 7 (1722 views)
Re: 90 jeep cherokee Sign In

does the engine crank and just not turn over?

if it cranks, are you getting spark? fuel?

try spraying a small amount of starter fuild in the intake while someone is trying to start the engine. it the engine catches and then dies, your not getting fuel.

im not sure if your year jeep is fuel injected or TBI. if its TBI you might have some gummed up remains of fuel blocking the passages.
__________________________________________________
2015 Jeep Grand Cherokee
2002 Ford Ranger
2004 Toyota Corolla
1969 Ford Mustang Mach 1


mightybowl
Novice

Mar 7, 2008, 8:32 PM

Post #3 of 7 (1720 views)
Re: 90 jeep cherokee Sign In

it tunes over but dosnt start. i did put starter fluid in the in take and it when then choked out so it is getting spark and i am pretty sure its fuel injec. but i have never heard of the other and it has fuel injectors so if that help


dmac0923
Enthusiast

Mar 11, 2008, 1:01 PM

Post #4 of 7 (1707 views)
Re: 90 jeep cherokee Sign In

TBI Throttle Body Injection. looks like a cross between a carburetor and the new models throttle body.
__________________________________________________
2015 Jeep Grand Cherokee
2002 Ford Ranger
2004 Toyota Corolla
1969 Ford Mustang Mach 1


mightybowl
Novice

Mar 14, 2008, 1:41 AM

Post #5 of 7 (1699 views)
Re: 90 jeep cherokee Sign In

no its fuel injection


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Mar 14, 2008, 2:06 AM

Post #6 of 7 (1698 views)
Re: 90 jeep cherokee Sign In

No matter what type of fuel injection for now it simply isn't getting fuel. Fuel pressure test would help. If this was left for six months with less than half a tank I'd worry about moisture in the gas now too.

Gas is not very stable IMO as I have pronounced problems with seasonal equipment that wasn't a problem many years ago. Strange additives being used now,

T



Double J
Veteran / Moderator
Double J profile image

Mar 14, 2008, 11:59 AM

Post #7 of 7 (1693 views)
Re: 90 jeep cherokee Sign In

Not a real Jeep guy but I do know and have fixed a couple a 4.0 L by replacing the Crankshaft position sensor..
These are very common failures...
And they do start the fuel pump /injector circuit..From what I understand....
Located on the bell housing of the trans ,drivers side....Pain in the *** to replace on 4x4 models...

Just a thought...Let us know.....

Crankshaft Position (CKP) Sensor 4.0L






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