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95 Mustang wont start

Tiny
WMASON1961
  • MEMBER
  • 1995 FORD MUSTANG
  • 6 CYL
  • 2WD
  • MANUAL
  • 109,000 MILES
My 95 mustang 3.8 has an ongoing starting problem. It wont start without starting fluid and even then it wont start when the ambient temp is below about 60. When it starts it will run fine. It will restart most times after it is warmed up. But when it is cold outside it wont fire at all. I have replaced the fuel pump, fuel filter, fuel, pressure regulator, Maf sensor. Coil pak, and coolant temp sensor. I don't understand how the outside air temp affects this and I can't afford to keep throwing parts at it. Any help would be greatly appreciated.
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Sunday, April 17th, 2011 AT 5:54 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,640 POSTS
Actually, the coolant temp sensor tells the computer how rich or lean to make the fuel mixture. If it is cold outside, the system needs to be rich (more fuel) for the engine to start. Keep in mind, there are two temp sensors. One tells the computer how rich / lean to make the fuel, and the other just sends a signal to the temp gauge or light in the vehicle.
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Friday, June 3rd, 2011 AT 1:33 PM

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