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Unread 03-01-2015, 06:17 PM   #1
sunbeacher
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Join Date: Mar 2015
Posts: 2
jeep does not restart

We have a 2000 jeep wrangler tj.
My daughter drives it for around fifteen minutes, the engine temperature gets to normal temp. when she goes to restart it.nothing until jeep sits for awhile.

I thought it was the fuel pump maybe bad gas ,so we put in sea foam and dry gas.Still would run fine but then can not restart. we took it to the shop yesterday and they could not find any issues.
She came home today from the store, and the jeep will not start, it just turns over and tries to fire.
We let it sit and it starts right up.
Any ideas?

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Unread 03-01-2015, 07:27 PM   #2
Jeepsr4me
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can you hear the fuel pump come on when you 1st try to crank it??
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Unread 03-02-2015, 05:37 PM   #3
wrscpc07
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1997 TJ Wrangler 
 
Join Date: Oct 2010
Location: , Western MA
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Just went through this. My jeep would start up, run but as soon as it hit 210, itd shut off. I replaced a bunch of sensors, including the "pick up coil" inside the distributor. But it turned out the one i replaced it with was a dud out of the box so it caused me many headaches. But long story short, check that sensor out. Cheap, takes about 5 minutes to replace.
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Unread 03-02-2015, 06:49 PM   #4
chris142
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2002 TJ Wrangler 
 
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Try tapping on the crank senser.
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Unread 03-02-2015, 07:04 PM   #5
wrscpc07
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1997 TJ Wrangler 
 
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Quote:
Originally Posted by wrscpc07 View Post
Just went through this. My jeep would start up, run but as soon as it hit 210, itd shut off. I replaced a bunch of sensors, including the "pick up coil" inside the distributor. But it turned out the one i replaced it with was a dud out of the box so it caused me many headaches. But long story short, check that sensor out. Cheap, takes about 5 minutes to replace.
Ya also check the crankshaft. Also easy to do
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Unread 03-02-2015, 08:14 PM   #6
bwiencek
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2008 JK Wrangler 
 
Join Date: Apr 2006
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You say "turns over and tries to fire" - does it backfire or catch for a second then stall or ??? Do you smell raw fuel out the tailpipe?

This should have been simple for a shop that has a diagnostic computer that can read a live data stream - call the shop and give them a heads up - have her run around and get the jeep good and hot and then go to the shop. Turn it off and then wait the appropriate time for the parts to heat soak and cause the no-restart condition - then the shop can plug in their diagnostic computer and watch the Crank and Cam positions, the Coolant Temp, TPS, MAP, and injector pulses would be a good start. If everything looks good then test the fuel pressure (doubt that's it since it restarts without fail when cold). Also it could be the ignition coil but usually that would happen in hotter summer weather when they get hot they can develop an open circuit in the windings - but there would usually be occasional rough running or a random stall too.
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