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Old 10-16-2006, 12:12   #1 (permalink)
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HELP engine won't start

I have a 2001 Crwn Vic that sometimes will stop running. The car will turn over but not start. After sitting for awhile it will start and run fine. It could be a week before it dies again. No check engine light. No codes stored. I have changed plugs (autolite plat) and fuel filter. I am kind of at a loss.
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Old 10-16-2006, 16:06   #2 (permalink)
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Re: HELP engine won't start

When it fails to start, does it turn over but not start? or does it not even turn over? When it fails to start do you have spark? A little more info helps a whole lot!
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Old 10-16-2006, 17:03   #3 (permalink)
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Re: HELP engine won't start

It turns over. After about 15 minutes to an hour it will start up as if nothing was wrong. No check engine light. I do have a computer to check codes nothing stored.
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Old 10-16-2006, 18:54   #4 (permalink)
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Re: HELP engine won't start

When it fails to start, do you have spark? If you have good spark then give it a shot of starting fluid and see if it starts with that. If it starts with that, then it should be fuel related.
HTH
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Old 10-17-2006, 00:23   #5 (permalink)
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Re: HELP engine won't start

Quote:
Originally Posted by dalions
It turns over. After about 15 minutes to an hour it will start up as if nothing was wrong. No check engine light. I do have a computer to check codes nothing stored.
Does it have an electronic dizzy ?
if so I suspect the module
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Old 10-17-2006, 02:06   #6 (permalink)
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Re: HELP engine won't start

It has cop's so I am not sure about having spark, but I assume so because it does start after sitting.

What is electronic dizzy?
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Old 10-17-2006, 09:08   #7 (permalink)
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Re: HELP engine won't start

Does this car have a crankshaft positioning sensor? If so i would bet my money on that...
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Old 10-17-2006, 13:07   #8 (permalink)
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Re: HELP engine won't start

Yes it has a crank position sensor but I beleive if that failed I would have a check engine light with codes.
I talked to the service department at the dealer and we both agreed that it may be the IAC valve. I replaced it today. If it goes for more than ten days without it dieing, then I think I will have a winner. I will post progress.
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Old 10-17-2006, 13:18   #9 (permalink)
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Re: HELP engine won't start

well on my girlfriend's malibu a similar problem occured and it was the fuel pump relay. Can you hear the fuel pump power up when you turn the key on?
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Old 10-17-2006, 15:25   #10 (permalink)
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Re: HELP engine won't start

I can hear it now. I don't remember if I heard it when would not start. Would her car go for a week or so between no starts?
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