Stalls at Stops

[Franksplace2]

I know the carb set up is different and suspect it is a fuel related issue. However, i had a 79 that stalled at stops. As George T pointed out with his alternator Diode problem. On the 79 back in the 80's the alternator Voltage regulator had issues and the car would not cycle and adjust RPM's to voltage requirment. When I stopped at a stop light it would stall. Never could really figure out how it was able to hold enough juice in the battery with a failing regulator. In any case, a rebuilt alternator did the trick. I would not buy or rebuild an alternator until testing the voltage. I know some on here said voltage would not cause a stall at a stop. Maybe it was just my car many years ago. I have a $3.00 cigarette lighter voltage meter that I plug in that helps me see how the voltage and voltage regulator are adjsting to RPM's. 13.8 volts at idle and 14.4 volts if higher RPM. 12.4 volts when just off the battery. Something as simple as a lose V belt could cause issues.

Who would think of the alternator causing stalls. I ordered my cigarette voltmeter from Walmart. They are $15 now.

Thank you for your help.

[GeorgeT]

You can take your car to Autozone or a similar store and they can test your alternator, at no cost, while on the car; this was how I nailed down the problem (after thinking bad battery).

[Franksplace2]

10K rpms is a lot! Maybe you meant 1K (1000). Anyway, mine would do the same and the problem was that the alternator had a bad diode and was not generating enough current (volts) to both run the motor and the brake lights, one or the other but not both. Replaced the alternator and all was well.

decimal points are a pita.
I am checking the alternator alternative per TX8.

Thanks

Frank

[Franksplace2]

Special thanks to Brad Artigue for his help. He diagnosed the problem and patiently help me figure out needed carb adjustments. My car no longer stalls at stops. The problem was fuel air mixture.

Frank

[amawds]

Excellent, glad to hear it. I was reading through the thread and about to offer some insight but my guesses were off anyway from the sound of it

[bradartigue]

Special thanks to Brad Artigue for his help. He diagnosed the problem and patiently help me figure out needed carb adjustments. My car no longer stalls at stops. The problem was fuel air mixture.

Frank

fantastic, drive it!!

[toplessexpat]

Great you got it fixed....

.... although maybe the car was trying to introduce it's own "Eco" feature ?