4.6L General Discussion This section is for non-tech specific information pertaining to 4.6L (Modular) Mustangs built from 1996 to 2004.

Fuel problem?

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Old Dec 4, 2007 | 12:25 AM
  #1  
deathbat_87's Avatar
deathbat_87
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Joined: Dec 2007
Posts: 2
Default Fuel problem?

hey I have a question about my 2001 GT. I live in an area where this time of year the temperature can get in the teens and I don't have a garage. My 'Stang doesn't want to start in the morning but when it warms up it does fine. I asked a friend of mine with some car knowledge and he told me it has to do with the fuel injection system. What he said was if I don't have 30 psi in the tank the car won't start, and with the cold the gas molecules contract reducing pressure. Whenever I have a full tank it starts fine. Is there anything I can do about this besides having a full tank all the time? With gas at almost $4 a gallon that's gonna be kinda difficult...[/align]
Old Dec 4, 2007 | 12:51 AM
  #2  
racer02GTstang's Avatar
racer02GTstang
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Joined: Mar 2005
Posts: 4,687
From: Nashville/Knoxville, Tennessee
Default RE: Fuel problem?

i really dont think there is much... unless you put warming pads on your fuel rails or tank???? lol

ummm.... maybe a hotter spark.... or some more fuel pressure?
Old Dec 4, 2007 | 01:11 AM
  #3  
2000GT4.6's Avatar
2000GT4.6
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Joined: Jan 2004
Posts: 12,575
From: United States
Default RE: Fuel problem?

ORIGINAL: deathbat_87

hey I have a question about my 2001 GT. I live in an area where this time of year the temperature can get in the teens and I don't have a garage. My 'Stang doesn't want to start in the morning but when it warms up it does fine. I asked a friend of mine with some car knowledge and he told me it has to do with the fuel injection system. What he said was if I don't have 30 psi in the tank the car won't start, and with the cold the gas molecules contract reducing pressure. Whenever I have a full tank it starts fine. Is there anything I can do about this besides having a full tank all the time? With gas at almost $4 a gallon that's gonna be kinda difficult...[/align]
The tank should be under pressure regardless of the temp... this is not your problem.

I would start with the typical plugs/fuel filter/air filter etc and go from there. You may also have something going on with the IAT sensor, I would suggest cleaning it and the MAF.
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