V6 (1994-2004) Mustangs Technical discussions on the 3.8L and 3.9L V6 torque monsters

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Old Jul 19, 2012 | 11:09 AM
  #11  
robb15033's Avatar
robb15033
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From: Virginia
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Make sure that the base P.M. items have been replaced and up to date- Fuel filter, air filter, pcv valve, plugs, ect..
When you look at the EGR valve, you will see multi-colored tubing in and out up to upper intake manifold. They are brittle plastic and break easily. Check for leaks around there and possibly along firewall.
Old Jul 20, 2012 | 03:28 PM
  #12  
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H1ck55ter
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From: South Carolina
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i had a similar problem with my saturn. dose it rev when it idles or high idle? but the problem sounds like an air to fuel ratio or a dump of fuel or flooding issue. check your MAF sensor and or take of the MAF and clean it. same with air filters.
Old Jul 31, 2012 | 11:38 PM
  #13  
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tkrokosh
 
Joined: Jul 2012
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From: Alberta, Canada
Default Mustang Stalls and Won't Start until cool?

Hi Gentlemen,

I just happened to notice some posts in this regard. I used to own a 1987 Mustang Cobra GT and had the car for about 8 years - I loved it... and still miss it.

ALTHOUGH... I had this problem multiple times with this car. I finally found a mechanic who knew the car very well and he explained the issue:

The Fuel Pump for the car is installed in the top (towards engine) of the gas tank and if there is not enough gas in the tank, the fuel pump will overheat and cause the vehicle to stall and not start until the fuel pump has cooled down. Problem is that eventually the fuel pump will be damaged and need to be replaced. I went through 3-4 fuel pumps at a hefty cost each time to replace (back in early 90s cost about $500+ or more each time).

To get a longer life out of a fuel pump, ensure to always have at least 1/4 tank of gas - never run the tank below - the fuel helps to cool the fuel pump. My problem was driving through mountains (Going to the sun road) and all the gas moving to the back bottom of the tank as I climbed the mountain (6600 ft elevation)... my car would usually stall once at top (thank god it was a standard and I could coast down the other side)... by the time I hit bottom and all the mountain water splashing under car, it would cool and I could restart.

It was a painful discovery though... took many mechanics, Ford dealerships, etc. until I finally discovered (probably a year of suffering) someone who knew everything about a Mustang... then I knew what to do everytime thereafter.

I hope this helps everyone... Someday I will own another Mustang... hopefully a Shelby next time!




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