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Topic: 91 L98 Does not start from time to time

in Forum: C4 Engines


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91 L98 Does not start from time to time (1/5)
 9/18/12 3:17pm
91vette2nv
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Vette(s):
1991 L98 Base Convertible w/removable hardtop.4 speed auto. White with red leather. 63,000 miles, all original except has after market radio.


Joined: 7/24/2012
Posts: 21

I have a 91 L98 (63000 miles) everything original except has after market radio. It runs and drives almost like new. Here is the problem from time to time after driving it will not start. Turn key absolutly nothing from engine. Let sit for 30-40 minutes fires right up and runs like a charm. I have been told everything from security system, chip in key, starter, battery ect. Does not happen everytime I drive, seems to be on the longer runs that it happens. Everything works when it will not start, so I eliminated the cause being the battery. Any thoughts this problem?
Thanks in advance!!

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91Vette2NV

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Re: 91 L98 Does not start from time to time (2/5)
 9/19/12 1:33pm
Adams' Apple
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Duncanville, TX - USA

Vette(s):
1985 Coupe-L98/Auto,Bright Red/Carmine. 1974 Coupe-L48/4speed, Medium Red Metallic/Black Deluxe.


Joined: 3/18/2009
Posts: 2230

Is the whole car dead when this happens? If so, then you most likely have a bad connection at the battery, or on the starter. If everything else works, but only the starter will not turn, it is most likely the starter solenoid. Heat can make it do weird stuff like that.

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Re: 91 L98 Does not start from time to time (3/5)
 9/19/12 2:20pm
pski88
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Buffalo, NY - USA

Vette(s):
1988 coupe all original 21,000 miles


Joined: 6/25/2010
Posts: 125

l98's are notorious for hard or sometimes not starting if solonoid is hot....does this seem to happen after u've driven the car up to full operating temps, then shut it off only for short time then try to re-start?If this is the case heat is your culprit....

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....Jeff
Re: 91 L98 Does not start from time to time (4/5)
 9/19/12 2:42pm
91corvette
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Warsaw, IN - USA

Vette(s):
1991 Coupe ACI ground effects,billet specialties wheel,flowmaster,k&n.


Joined: 12/4/2009
Posts: 17

Its vats problem. My 91 did the same thing. Buy a vats bypass and you will be good to go.

Re: 91 L98 Does not start from time to time (5/5)
 9/19/12 2:55pm
91vette2nv
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Vette(s):
1991 L98 Base Convertible w/removable hardtop.4 speed auto. White with red leather. 63,000 miles, all original except has after market radio.


Joined: 7/24/2012
Posts: 21

Thanks everyone. Will do the VATS bypass first. Saw one on Mid America that has 3 positions so that VATS can be switched on when needed for security. Got my key code today from dealer. If this does not work then will try heat shield on starter. Thanks again to everyone for imput. 

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91Vette2NV

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