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Old 06-25-2008, 12:38 PM
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Car starts but won't stay running

I have a '73 Cuda with a 440 transplant engine. I have developed a problem where the car will start with out any problem but when the key goes back to the on position the engine quits. I can keep it running by holding the key between the start and on positions but the guages (tac) don't work. Occasionally it will run properly for a few days or even weeks then the problem reoccurs. I have changed the notorious ballast resistor with no luck, the only other thing that I can think of is the ignition switch. Anyone have any other possible solutions?
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Old 06-25-2008, 01:16 PM
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Are you getting power to the blue wire to the ballast resistor when you have the key on?
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Old 06-25-2008, 01:39 PM
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You need a new ballast resistor. its a white block about 3 inches long and
1 1/2 inches wide. This was the most common problem on chrysler products. You could also have a bad ignition switch but I doubt it.
The resistor is usually mounted to the firewall or the inner fender

Chet
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Old 06-25-2008, 01:42 PM
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Quote:
Originally Posted by T-bucket23
You need a new ballast resistor. its a white block about 3 inches long and
1 1/2 inches wide. This was the most common problem on chrysler products. You could also have a bad ignition switch but I doubt it.
The resistor is usually mounted to the firewall or the inner fender

Chet
He just replaced it. Sounds to me more like a switch or like a bad connection at the bulk head connector.

I would pull the bulk head connector and clean it then regrease it with dielectric grease and plug it back to gether. Check the blue wire at the ballast resistor and also coming out of the ignition switch and let me know what you come up with.

Jason
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Old 06-25-2008, 02:06 PM
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Quote:
Originally Posted by BJS racing
He just replaced it. Sounds to me more like a switch or like a bad connection at the bulk head connector.

I would pull the bulk head connector and clean it then regrease it with dielectric grease and plug it back to gether. Check the blue wire at the ballast resistor and also coming out of the ignition switch and let me know what you come up with.

Jason
Sorry I half read it, trying to do 3 things at once. I agree with the two options you have suggested

Chet
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Old 06-25-2008, 03:10 PM
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Quote:
Originally Posted by BJS racing
Are you getting power to the blue wire to the ballast resistor when you have the key on?
Thanks, I'll check as soon as I get a chance.
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Old 06-25-2008, 03:11 PM
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Quote:
Originally Posted by BJS racing
He just replaced it. Sounds to me more like a switch or like a bad connection at the bulk head connector.

I would pull the bulk head connector and clean it then regrease it with dielectric grease and plug it back to gether. Check the blue wire at the ballast resistor and also coming out of the ignition switch and let me know what you come up with.

Jason
thanks, I'll give it a try.
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