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1994 Ford Mustang my 94 Mustang turns off

Tiny
JCERV168
  • MEMBER
  • 1994 FORD MUSTANG
  • 184,091 MILES
I have a 94 mustang it runs for like 25 minutes then it turns off and have to wait till it cools down so it can start back up what can it be please help no one has fixed my problem it's a 1994 mustang gt 5.0 V8 I've changed the distributor pick up coil the control module and I don't know what can it be
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Wednesday, September 4th, 2013 AT 4:52 PM

10 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
I need you to check something for me. Run the car till it shuts off. Then, check to see if there is spark to the plugs and if the fuel pressure is within the manufacturer's specs.

Wait. Try this first.

Under the hood in the relay box you will find a relay called the EEC (electronic engine control). Switch it with a known good relay with the same part number and see if the engine still dies. If it does, then check for spark and fuel. One will most likely be missing.

Let me know what you find.
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Wednesday, September 4th, 2013 AT 6:59 PM
Tiny
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My mustang has four relays they are squared and black under the box but there is one missing on the upper left hand corner so there's 3 out of 4
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Thursday, September 5th, 2013 AT 12:03 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Is one of them the EEC? The purpose of each relay should be listed on the inside of the cover.
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Thursday, September 5th, 2013 AT 5:10 PM
Tiny
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  • 5 POSTS
It just says relay 1, 2, 3 and 4 and I think I know what it is it's the fuel pump because when it turns off I checked if gas comes out of the motor and no sign of gas and do you know if the fuel pump is metal or plastic because I called and auto parts and they said I have to check if it's metal or plastic
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Thursday, September 5th, 2013 AT 5:15 PM
Tiny
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  • MECHANIC
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Metal or plastic? The pump is in the fuel tank. I need to know which engine you have to check if I can determine what it is made from. Most are a combination of metal and plastic.

Do me a favor. Before we look at the fuel pump, start the engine and wait till it stalls and won't restart. At that point, see if the engine will start for a couple seconds using starting fluid. If it does, then the problem is fuel related.

Let me know what you find.
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Thursday, September 5th, 2013 AT 5:42 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Also, let me know the engine size so I can check out the fuel pumps.

Joe
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Thursday, September 5th, 2013 AT 5:43 PM
Tiny
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It's a 1994 mustang Gt 5.0 V8
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Thursday, September 5th, 2013 AT 5:45 PM
Tiny
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I looked on Auto Zone's web side and the pump they are showing is steel.

Let me know what you find with the starting fluid.
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Thursday, September 5th, 2013 AT 5:58 PM
Tiny
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I will let you know thanks!
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Thursday, September 5th, 2013 AT 6:02 PM
Tiny
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I'll watch for your reply
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Thursday, September 5th, 2013 AT 6:09 PM

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