Car squeals and dies
Thread Starter
Drifting
Joined: Jul 2020
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From: San Diego
Car squeals and dies
I have a 1968 with a 383 Stroker, Holley Sniper efi and MSD ignition. I started the car yesterday and i had a terrible squeal coming form under the hood that got worse as I rev'd it but then subsided as it got warmer. I took it for a quick drive and she seemed to run fine. I let it sit over night, got back in today and she will start right up but then within a few seconds the squealing starts and she dies. Almost as if she is starved of fuel but I can hear my electric fuel pump run and my fuel pressure is good. My alternator is only about a year old. Any ideas?
Is my vette stock?? HAHA
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From: Im not allowed to tell you
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I would determine if its a belt squealing and if its squealing because its loose. If its tight then you may have a bearing going in your alternator or PS pump. The dying right away may or may not be related....you may need ot ensure you are getting fule flow or maybe your floats are stuck and its not getting enough fuel....maybe squirt some fuel down the throat and start it and see if you can keep it running,,,,check the fuel bowls sight glass if its a holley...
Is my vette stock?? HAHA
Joined: Oct 2015
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From: Im not allowed to tell you
2020 C3 of the Year Finalist - Modified
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That makes sense. I know my EFI got all weird when my battery was bad and it was living of the alternator....good direction to investigate
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Your EFI should run fine down to about 7 volts. Maybe high 7 volt, like 7.8 volts or so. If your car is turning over I'll bet you have way more than that. But your aftermarket EFI may be more touchy than a factory Dephi setup. I have no way to know.
The squealing sounds like belt slipping. Bad, worn, loose belt or bad bearing in your Alternator???
Is one related to the other? Seems a strange coincidence that both happened at the same time.
Find the squeal! Hopefully you'll find all the trouble.
The squealing sounds like belt slipping. Bad, worn, loose belt or bad bearing in your Alternator???
Is one related to the other? Seems a strange coincidence that both happened at the same time.
Find the squeal! Hopefully you'll find all the trouble.
Is my vette stock?? HAHA
Joined: Oct 2015
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From: Im not allowed to tell you
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No it will not run fine below 12 volts, Holley actually states that in one of its troubleshooting videos.
Is my vette stock?? HAHA
Joined: Oct 2015
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From: Im not allowed to tell you
2020 C3 of the Year Finalist - Modified
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I would get the squeal taken care of, make sure your alternator is working correctly then look through these posts to see if any of these hold your answere. It appears there is a relay control that cuts the fuel pump.
https://forums.holley.com/forum/holl...ire=#post62072
https://forums.holley.com/forum/holl...ire=#post62072
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Is my vette stock?? HAHA
Joined: Oct 2015
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From: Im not allowed to tell you
2020 C3 of the Year Finalist - Modified
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Race Director
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From: Virginia
Do you have a multimeter? Or a cell-phone charger with a voltage display that plugs into your cigarette lighter?
Another possibility: Take the belts off and check that the accessories spin. A car I once had came with a frozen AC compressor, and wouldn't run. Easy fix, once I found someone to extract the R134a.
Another possibility: Take the belts off and check that the accessories spin. A car I once had came with a frozen AC compressor, and wouldn't run. Easy fix, once I found someone to extract the R134a.
Le Mans Master
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I would remove the alternator belt, use jumper cables from another car (to maintain voltage), then start the Corvette to see if 1) it no longer squeals, and 2) it no longer dies.
If it still squeals then remove the other belts (assuming you have multiple belts).
That should knock off a bunch of troubleshooting and it's quick and relatively painless.
If it still squeals then remove the other belts (assuming you have multiple belts).
That should knock off a bunch of troubleshooting and it's quick and relatively painless.