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post #1 of 31 Old March 1st, 2011, 11:03 PM Thread Starter
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wont start after its warmed?

hey guys,
On the 86 5.0 i just picked up, like the title says, the car with fire right up first turn of the key. But once it warms up to normal operating temp and the car is shut off it will not start until i let it sit for bout an hour. Anybody had this problem or know what wrong?




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post #2 of 31 Old March 1st, 2011, 11:12 PM
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What do u mean after it warms up? Can u Drive it around for a while with no problems?
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post #3 of 31 Old March 1st, 2011, 11:13 PM
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I think the starter is old, check to see I the car has aftermarket headers, they might cause the starter to get hot so when you try to start the car again it won't be able to turn because it locked up, just my 2 cents it happened to me.

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post #4 of 31 Old March 1st, 2011, 11:20 PM Thread Starter
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ya henry i can start it, drive around fine and idles just fine. But like i said if it reaches normal operating temp it wont fire back up. But if its cold and i start it and shut it off right away it will start right up again. Only does this after the engine is hot?




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post #5 of 31 Old March 1st, 2011, 11:25 PM
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Is the motor even cranking over?

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post #6 of 31 Old March 1st, 2011, 11:57 PM Thread Starter
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ya its cranking over just fine!




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post #7 of 31 Old March 1st, 2011, 11:59 PM
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Id try a new starter or a heat shield of some sort, or do both


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post #8 of 31 Old March 2nd, 2011, 12:04 AM Thread Starter
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even tho its turning over ok and trying to start but wont?




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post #9 of 31 Old March 2nd, 2011, 12:13 AM
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I had this same problem , it was vapor lock my fuel line was right next to my header!
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post #10 of 31 Old March 2nd, 2011, 12:16 AM
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Quote:
Originally Posted by 02gtbangstang View Post
even tho its turning over ok and trying to start but wont?
oh..... well then im not sure... i thought you were saying it wouldnt crank when it was hot.


DART 331ci stroker, AFR 185 heads,
Trick Flow R intake,
Accufab 70mm tb, 75mm pro m Maf, 30lb injectors,
jba headers, 2 1/2" x pipe
flowmaster super 10 mufflers,
255 fuel pump,
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post #11 of 31 Old March 2nd, 2011, 12:47 AM
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Quote:
Originally Posted by 02gtbangstang View Post
even tho its turning over ok and trying to start but wont?
If it's turning over just the same hot as it is cold but it just won't fire, then it's not a starter issue. These cars do have problems killing starters with heat especially if you have longtubes, but the classic symptoms of a starter dying from the heat is slow cranking.

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I had this same problem , it was vapor lock my fuel line was right next to my header!
I've seen this before too and it would be a good thing to check. It's free and easy to do.
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post #12 of 31 Old March 2nd, 2011, 01:38 AM
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mine does this as well but it turns over slow as shit and its a pain to start is it the heat from my xpipe maybe causing my starter to screw up?
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post #13 of 31 Old March 2nd, 2011, 08:34 AM
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mine does this as well but it turns over slow as shit and its a pain to start is it the heat from my xpipe maybe causing my starter to screw up?
you have long tubes?

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post #14 of 31 Old March 2nd, 2011, 03:48 PM
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No but i know my xpipe is right there and my shorty headers im just saying it does get hot under my hook lol, ALso it slow cranks and is a biotch to start and it only happens when its warm
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post #15 of 31 Old March 2nd, 2011, 09:31 PM Thread Starter
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Fogged306, how do i test to see if it is vapor lock?




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post #16 of 31 Old March 2nd, 2011, 10:21 PM
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So you can just crank forever after its been warm and shut off untill the battery runs down and nothing? no sputterin or spitting or even trying to start?
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post #17 of 31 Old March 3rd, 2011, 12:23 AM
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Get the tfi module tested. More than likely its the tfi module.

Aswell ground cables. Yes beilive me a ground cable can cause this. It can probally be the one that goes to the frame and battery post. That was the problem on mine.
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post #18 of 31 Old March 3rd, 2011, 12:31 AM
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how do you test the tfi module?
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post #19 of 31 Old March 3rd, 2011, 01:44 AM
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Quote:
Originally Posted by 02gtbangstang View Post
Fogged306, how do i test to see if it is vapor lock?
I have no idea how to actually test for vapor lock. I just had a friends car do something very similar. Only his would run like crap when it got hot and if you shut it off, it wouldn't start until it cooled. We noticed that the fuel lines were really close to the headers, so we moved them away from them just to see if that was the problem, and just like that, the car never had that issue again.

I just meant to check and see if the fuel lines were close to the headers.
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post #20 of 31 Old March 3rd, 2011, 09:56 PM
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See this only happens when i warm the car drive it somewhere and come back and try to start itll crank slow, then when the car is cooler it willfinally start still on slow cranking.
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