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hard to start when hot

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Old Jan 19, 2012 | 07:05 AM
  #1  
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pwb
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From: Norway
Year: 1993
Model: Grand Cherokee
Engine: 4.0L I6
Default hard to start when hot

Hi, if i try to start the engine after its hot it take 5-10sec to start, if i let it stay for 20-30 min its not any problem to start, if i stop it and start i before it have gone 1-2 min its not any big problem, but if it stays for 5-20 min its a problem. Could it be the ignition coil that need replacment?
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Old Jan 20, 2012 | 04:40 AM
  #2  
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kjc
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From: Blue Springs, MO
Year: 1993
Model: Grand Cherokee
Engine: 4.0L Laredo
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Originally Posted by pwb
Hi, if i try to start the engine after its hot it take 5-10sec to start, if i let it stay for 20-30 min its not any problem to start, if i stop it and start i before it have gone 1-2 min its not any big problem, but if it stays for 5-20 min its a problem. Could it be the ignition coil that need replacment?
I've read on here that a faulty CPS can act up that way. Ok when cool, but heats up and fails. If that's the case, it'll get worse before it gets better. If it fails it could result in a no start condition. I believe they can be tested on the vehicle.
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Old Jan 20, 2012 | 06:25 AM
  #3  
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From: Norway
Year: 1993
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do i need to buy cps spacers to?
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Old Jan 21, 2012 | 04:50 PM
  #4  
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kjc
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From: Blue Springs, MO
Year: 1993
Model: Grand Cherokee
Engine: 4.0L Laredo
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Originally Posted by pwb
do i need to buy cps spacers to?
dunno, never replaced one. I've looked 'em up online and seen something about using a piece of paper or some spacer. And I know you want to use the original bolts as they're 'special'.
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