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Motor stalls when weather gets hot

Tiny
ROARINGRIVER
  • MEMBER
  • 1986 FORD MUSTANG
  • 3.8L
  • V6
  • 2WD
  • AUTOMATIC
  • 40,000 MILES
When the weather gets 85-90. Car will only run about 10 miles and stalls. In about 5-10 minutes, motor will start and do the same thing. Or you can put gas or something in the carb and it will start right up, no waiting. This happens only in the summer, will go all winter no problem.
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Thursday, April 16th, 2015 AT 12:07 PM

3 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Carburetor or fuel injection? If it's carb try a different gas cap and get back to us with what it is. But check fuel pressure for both with a gauge
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Thursday, April 16th, 2015 AT 12:10 PM
Tiny
ROARINGRIVER
  • MEMBER
  • 2 POSTS
I put several gas caps on and even run without one, same results.
Its a efi carb. If it was the carb, it would do this all the time, not when the weather gets hot.I've had over 5 mechanics look at this problem, and not one has any idea whats going on.
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Saturday, April 18th, 2015 AT 2:21 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
It's efi not a carb, try cleaning throttle plate on both sides and iac hole with choke cleaner also CHECK FUEL PRESSURE with a gauge auto parts rent it.
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Saturday, April 18th, 2015 AT 4:04 PM

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