Car stalls then won't restart

Asked by Tyson Dec 03, 2018 at 08:34 PM about the 1987 Volvo 740 GLE

Question type: Maintenance & Repair

So my Volvo stalled when I was at a stop light, and would not
restart. It turned out to be the fuel pump relay because after
jiggling the relays I was able to get it home. Since then I have
gone to AutoZone and replaced the old relay with the most
expensive one they had.

Fast forward to today. I had been driving for about 30 minutes
various places, and I turned on some music. I do have a
subwoofer in the back and it's hooked up directly to the battery.
The music was quiet, and the bass was turned down. I notice a
sudden drop in power about a minute into the song (the sub
wasn't doing much), and the engine comes back. I pull up to a
stop light and after 30 seconds of being stopped, the car just
stalls. I could not get it started again and we had to push it into
a parking lot. The car still turns over really strong and I can hear
the fuel pump coming on when I crank it.

Could the sound system have caused the stall? Would that keep
it from turning back on?

Any help appreciated, thank you

1,435

Jerry answered 5 years ago

In short, 'Yes'. AS to Question 2 no idea from the data you've provided. If it will not crank I would remove the alternator and have it tested. 'I could not get it started again' Do you mean it cranks over fine but will not start? We need you to paint a picture with words in order to really be helpful. tia Those 740's are notorious for having old wiring go bad, as well so it could be a few things, regardless of how specific you are. :/ As to a few things you can do right now: Let's isolate things to make troubleshooting easier. Unhook the stereo amp(s) from the car electrical system. Charge the battery and go try to start it.. see if you can drive it around for an hour. If you can drive the car with no problems, I would rethink the stereo design and be sure your alternator can run the vehicle AND the stereo load at the same time at night. You may need a larger alternator or you could have bad connections if the stereo is the issue.

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Tyson answered 5 years ago

Since then I found out the problem was it running too rich and flooding. I got rid of that piece of crap

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GuruF811L answered 4 years ago

I have a Volvo 740 estate for drifting and one day it started acting up it won’t take the limiter when put in gear but will take the limiter sitting in neutral and will also take the limiter in reverse it’s very strange any ideas of what it could be?

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Car stalls then won't restart

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Car stalls then won't restart

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