Question about 2000 Jeep Grand Cherokee

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2000 Jeep Cherokee Laredo 4L

Replaced water pump, now won't crank, fuel pump is working, replaced battery, turns over.. no crank
ddcoop123@yahoo.com

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  • ddcoop123 Oct 01, 2008

    My 2000 JeepGrand Cherokee laredo setup for about 3 months, replaced the waterpump, now it will only turn over, no crank.. though maybe battery, so i bought a new one, I do notice the security light stays on, so I tried the turning the grey key to the on postion for about an hour to let it cycle through ... ran battery down, didn't crank, the fuel pump does work... what should i try ? Thought i'd give ya'll some more details.....

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> now it will only turn over, no crank
Just to clarify; crank = turn over So it is cranking but not firing.
Have you tried pulling a plug wire and letting it lay on the engine to see if there is any spark at all? Also, after sitting for a while, the crappy gasoline we have gets stale; I have a summer toy car that gets rough each spring until the 'old' gas is gone. If you have spark, I would then try the injector rail valve to see if you are actually getting fuel to the injectors; this is capped with a threaded plastic cap and underneath is a valve similar to a tire valve. Have someone crank the engine while you poke the valve to see if there is fuel present.
If you find both fuel and spark, then I suggest you buy a spray can of 'starter fluid' to squirt into the air intake to try to wake the engine up. Any auto parts store has it for a couple of bucks.  This stuff is pure ether so VERY flammable; use caution. I have used up most of a can to keep an engine turning over until fuel supply has stabilized.  


Posted on Oct 01, 2008

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