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GMC Jimmy Starting and Stalling Problems

231 messages,  Last post on Nov 13, 2009 at 1:49 PM

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What is this discussion about? GMC Jimmy, Engine, SUV


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#197 of 231
2001 GMC Jimmy Starts great,but will not restart after warm up. by nickjax
Jun 26, 2009 (10:00 am)
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2001 GMC Jimmy/4.3L Vortec/4X4.
  When I first start the Jimmy it fires right up. While driving the engine runs great,and even better now with all the new parts. I park it then try to re-start it. It only cranks and does not fire back up. I could drive it for hours,but when I stop and shut it off. It will not start back up. It will start again if I wait for 20 or 30 min. When I shut it off after that,still no start up,just cranks.
I have so far replaced,the fuel pump,fuel filter,the map censor,the crank censor,EGR valve,air filter,all plugs,all wires,the whole distributor assembly,and the oil. I took off the coil,and the ingintion module. I brought them to autozone and had them run a test on them. All checked out fine. During the problem I checked for spark. There is spark,but still will not start up. The timing is great.This is the EDI ignition. Can't adjust the timing after the installation of the distributor.
  Can't figure this one out. Anyone on here had this same problem? The check engine light never has turned on. Is there a part in the fuel system that heats up that will cause it not to restart? It will start and run fine in wet weather too. Will not restart after warm up.
#198 of 231
Re: 2001 GMC Jimmy Starts great,but will not restart after warm up. [nickjax] by kenneyg
Jun 30, 2009 (2:29 pm)
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Replying to: nickjax (Jun 26, 2009 10:00 am)

Hi there, I'm Kenney and live in Oregon and have an elderly man that is like a father to me living in Ark. that has this very same problem that you seem to be having . I was curiouse if you ever found out the problem with your rig so that I may be able to help my good friend back home. I'm sorry not to have the info for what has been already done. All that I can say is that it was put on a scope and nothing was found to be wrong with it.
Thank you for any help you may be able to help with.
kenney for Edgar
 
197 of 197 2001 GMC Jimmy Starts great,but will not restart after warm up. by nickjax Jun 26, 2009 (11:00 am)
2001 GMC Jimmy/4.3L Vortec/4X4.
  When I first start the Jimmy it fires right up. While driving the engine runs great,and even better now with all the new parts. I park it then try to re-start it. It only cranks and does not fire back up. I could drive it for hours,but when I stop and shut it off. It will not start back up. It will start again if I wait for 20 or 30 min. When I shut it off after that,still no start up,just cranks.
 
  Can't figure this one out. Anyone on here had this same problem? The check engine light never has turned on. Is there a part in the fuel system that heats up that will cause it not to restart? It will start and run fine in wet weather too. Will not restart after warm up.
#199 of 231
Re: 2001 GMC Jimmy Starts great,but will not restart after warm up. [kenneyg] by my4littleangel
Jun 30, 2009 (7:38 pm)
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Replying to: kenneyg (Jun 30, 2009 2:29 pm)

They ended up replacing the central port fuel injectors, now the car runs like a top! Perfect! It is the second time I have had to have that replaced, so I am worried if it will go out again.
#200 of 231
Re: 2001 GMC Jimmy Starts great,but will not restart after warm up. [kenneyg] by jonnyring
Jul 01, 2009 (3:54 am)
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Replying to: kenneyg (Jun 30, 2009 2:29 pm)

FWIW...
  One thing I replaced once was the temp. sender to the COMPUTER.... NOT the sender to the temp. gauge/light. It was inexpensive ($10-$12? Autozone).
Once the truck was up to temperature..the Computer temp. sensor/sender was telling the computer to not let the truck re-start.
That solved my problem when the truck would not restart after getting up to temp.
#201 of 231
GMC Jimmy Starts great,but will not restart after warm up. by kenneyg
Jul 01, 2009 (8:10 am)
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Hey johnyring,
Just wanted to thank you for letting me know this. I have forwarded it back home
and maybe that will solve the mistery.
thanks again.
kenneyg.
#202 of 231
Weirdest Stalling Issue.......... by kellybell28
Jul 14, 2009 (12:45 pm)
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Ok, I got my 1994 Jimmy a few months ago and I don't know what the guy did to it, but here is the situation............ The truck would sputter, like it was outta gas, and would slowly die. So we replaced the fuel pump, but found the gas tank had a crack.....haven't fixed that just yet. The new fuel pump and lines didn't help the issue, seemed to make it worse. Then we discovered that if you open the driver's side door when it starts to "die", and the domelight comes on, it kicks back-up and runs fine. Obviously I can't ride around with the door hanging open.........ANY suggestions would be GREATLY APPRECIATED
Thanks Everyone!!
#203 of 231
Re: Weirdest Stalling Issue.......... [kellybell28] by my4littleangel
Jul 14, 2009 (6:57 pm)
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Replying to: kellybell28 (Jul 14, 2009 12:45 pm)

Seriously sounds like my car (Minus the door opening, not sure what that is about! HA)
 
We had to replace the central port fuel injectors. Twice. Once last month, and once about 5 years ago. It runs good now, we shall see!
#204 of 231
Re: 2001 GMC Jimmy Starts great,but will not restart after warm up. [nickjax] by steelerfan67
Jul 29, 2009 (8:50 pm)
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Replying to: nickjax (Jun 26, 2009 10:00 am)

We have an 01 jimmy and have very similar problems, been dealing with this for awhile. replaced fuel pump, fuel filters, flushed fuel lines, pickup coil, inginaiton mod, altinator, was overcharging. engine light comes on sometimes no codes fuel gauge jumps around runs good when cool or cold out. gets hot out it act up. stops when driving and when you park it wont start wait 15 min starts up again we are at a lost
#205 of 231
Re: 2001 GMC Jimmy Starts great,but will not restart after warm up. [steelerfan67] by jonnyring
Jul 30, 2009 (3:06 am)
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Replying to: steelerfan67 (Jul 29, 2009 8:50 pm)

Sounds like your "Cold Start circuit" isn't telling the computer that the car is now warm?
Two things I can think of at little to no extra costs...
1)Replace Temp. sensor/sender to the computer...NOT the sender to the guage. Inexpensive part to replace. Shop around...NAPA, Advance, etc., for best price.
2)Idle Control Valve (ICV). Clean it...may be sticking or STUCK in the "cold" position??
 
I hate throwing parts at a car hoping to solve the problem.
 
Hope I helped?
jonny
#206 of 231
2000 jimmy bogs down by rockclimber2
Aug 01, 2009 (1:42 pm)
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My jimmy bogs down if i step on the gas and when i let up it smooths out. I had the fuel pump replaced feb 09 and that now has a high pitched whine. Does anybody know what could be wrong? Are both problems related?

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