1996 Chevrolet Monte Carlo Car Dies In Hot Weather

Tiny
FUNK_314
  • MEMBER
  • 1996 CHEVROLET MONTE CARLO
  • 3.4L
  • 2WD
  • AUTOMATIC
Monte Carlo dies when it is hot out but most of the time starts back up. Yesterday I left it out all day in the sun and came home tried to start it but it was like the battery was dead since nothing would come on in the on position and wouldn't crank when turned over. Didn't have a multimeter so I hooked up the battery charger. Charge was good and started the car with the charger on it. I have been having issues with the turn signal switch for the past few months more with left and right brake lights not working vs blinkers. Now blinkers and brake lights aren't working at all except for the top middle brake light. Could the turn signal switch be causing the car to die when it is hot out? Tested fuel pressure in the evening. When in the on position pressure goes to 30 when started pressure is 40.
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Wednesday, August 27th, 2014 AT 8:54 AM

7 Replies

Tiny
HMAC300
  • EXPERT
Have battery tested for condition including load test autparts do for free. Fuelpressure shold be 48-55psi with lower number minimum that ' sprobably why it stalls. The turn signal may be the switch or the hazard switch as that is also the flasher. So check if ower goes in an dout of t/s switch
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Wednesday, August 27th, 2014 AT 9:32 AM
Tiny
FUNK_314
  • MEMBER
I had the load on the battery tested. They said it was good and shouldn't have any issues with it. Even if the fuel pressure was bad would that cause a car to die in hot weather as well as not start or even have power when it sits in the sun for a couple of hours? I haven't been able to see if it has been messing up because it hasn't been hot out (90+ weather). I have drove around for an hour in cooler weather (below 80) and don't have any issues. I was told to check my 60amp fuse and found that was good. I also don't ever seem to notice my radiator fans kicking on but not sure if it is because the car hasn't gotten hot enough or not. Any other way I can test the fans without running it till it the engine gets hot? Also if you have any other suggestions of why it is having issues dieing as well as sometimes no power when sitting in the sun that would be great. Thanks again for your expertise.
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Thursday, September 11th, 2014 AT 7:40 PM
Tiny
HMAC300
  • EXPERT
Thought when I sent the first reply you would catch it but eveidently not. Your fuel pressure is low that is why you are having the trouble. You probably need anew pump.
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Friday, September 12th, 2014 AT 6:25 AM
Tiny
FUNK_314
  • MEMBER
Gotcha. I still just don't get if I do need a new pump how does a faulty pump affect the power (lights, radio, etc)? Also did you have any thoughts on the radiator fans?
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Friday, September 12th, 2014 AT 7:15 AM
Tiny
HMAC300
  • EXPERT
The wer can be dirty battery cable ends as well as worn out belt and tensioner which at 60k is recommended replacement. Since you didn't put miles on car I have no idea if it's been replaced. The tensioners lose tension and should be replaced with belt. Hence low power
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Friday, September 12th, 2014 AT 9:32 AM
Tiny
FUNK_314
  • MEMBER
Mileagae is 150,000+. Posts on battery and battery connections are clean. How do the tensioners & belt have any affect on the power when the car isn't even started. Also how would weather affect the belt & tensioner. Car drives fine at night.
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Friday, September 12th, 2014 AT 10:35 AM
Tiny
HMAC300
  • EXPERT
It doesnt' effect it while standing still but that can be corrosion on fuses in underhood box or poor contact and while driving the belt slips due to being worn, which you need a tool to tell if it is or not, and slipping. I have no further comments or suggestions.
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Friday, September 12th, 2014 AT 10:52 AM

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