5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

5.0 NO START!

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Old 11-16-2004, 01:01 PM
  #11  
slo93aod
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Default RE: 5.0 NO START!

does the fuel pump prime when you put the key in the "on" position?
you should here it for 1 sec.
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Old 11-16-2004, 01:10 PM
  #12  
davemurray
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Default RE: 5.0 NO START!

It doesnt eally sounds as loud as the original one when I turn the key on the ON position, all I hear is the lines when they fill.
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Old 11-16-2004, 01:17 PM
  #13  
slo93aod
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Default RE: 5.0 NO START!

umm, You can hear the fuel rail fill but not the pump making the normal noise, so I'm asuming that the fuel pump relay,wiring, and fuel pump are working correctly. You said earlier that the fuel pressure was ZERO so I would look at the fuel pressure regulator
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Old 11-16-2004, 01:47 PM
  #14  
davemurray
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Default RE: 5.0 NO START!

Could it be the pressure regulator even if gas comes out the shrade valve?
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Old 11-16-2004, 01:55 PM
  #15  
slo93aod
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Default RE: 5.0 NO START!

yeah you could have low fuel pressure

ie: 5lbs of pressure wont work if the car needs 40,

be 100% certain that you know your fuel pump is working and you DONT have fuel pressure (or low) before you spend another $50 on a regulator
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Old 11-16-2004, 01:57 PM
  #16  
davemurray
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Default RE: 5.0 NO START!

I'll check that now !
Thanx!
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Old 11-16-2004, 02:50 PM
  #17  
RUSH2112
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Default RE: 5.0 NO START!

I think the strator is inside the distributor and the TMI is a module plug on the outside of the distributor.
You may just want to replace the entire distributor all-together. Make sure you mark the outside of the distributor to line it back up properly.
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Old 11-17-2004, 07:11 PM
  #18  
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Default RE: 5.0 NO START!

davemurray, I was just reading your posts due to the same problems i'm having with my car. As i was checking the fuel pressure (40lb) when a neighborhood mechanic told me the disconnect the BAP sensor. The car started and stayed running. When reconnected the sensors. Car just turn over no start. Only way started is with starting spray into the intake, then pump pedal once released motor will die. Just relaying my experience, hope this helps .Good luck. Regg
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Old 11-18-2004, 10:51 AM
  #19  
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Default RE: 5.0 NO START!

I think it's called Map sensor not Bap(sorry). Located on fire wall driver side. It has a electrical connection and a vacuum hose connection. disconnect the elec conn. see if she starts. Regg
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Old 11-18-2004, 01:10 PM
  #20  
Quik
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Default RE: 5.0 NO START!

if this is the guy i spoke to last nite. his battery is dead and needs charged.
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