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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.

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Old 07-02-2006, 11:07 AM   #1
gmsceo
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Default 86-88 GT Fuel Pressure Regulator Location?

Hello. I'm trying to install an adj. fuel pressure regulator on my speed density '88 GT because the idle pressure is sitting at 44-46psi, idles like s#@t, smells rich, and sometimes stalls when you come to a stop or put it in park. It runs awesome once you get rolling and at WOT though. I was thinking it needs to have the idle fuel pressure lowered to cure the problem, but I honestly don't see the stock FPR! Maybe I'm looking too hard, or just an idiot, but I don't see it. Any help would be appreciated!
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Old 07-02-2006, 11:37 AM   #2
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Default RE: 86-88 GT Fuel Pressure Regulator Location?

Pass side of the motor towards the back under the egr valve. Has a vacuum line going to it.
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Old 07-02-2006, 03:23 PM   #3
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Default RE: 86-88 GT Fuel Pressure Regulator Location?

This might help.....

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Old 07-02-2006, 05:18 PM   #4
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Default RE: 86-88 GT Fuel Pressure Regulator Location?

if it is that rich, I doubt it is the FPR, when they fail, the preasure usually drops. It sounds like it is in open loop, so, look at your MAP sensor, a vacuum leak, or a pinched vacuum line. I have had both a FPR fail, and a MAP sensor fail.
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Old 07-02-2006, 05:35 PM   #5
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Default RE: 86-88 GT Fuel Pressure Regulator Location?


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This might help.....

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Old 07-02-2006, 05:35 PM
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1988, 1992, 1995, 50, 86, 88, 92, ford, fuel, gt, located, location, mustang, pressure, regulator

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