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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 03-27-2011, 11:59 AM   #1
90331stanggt
 
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Default eec relay?

Having problems w my fuel pump relay..it chatters but wont hold..I want to find the eec relay .it's a 90 any help would be cool thanks
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Old 03-27-2011, 12:46 PM   #2
holyshift
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Try jumping the relay,To see if its the fuel pump relay?
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Old 03-27-2011, 04:20 PM   #3
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This might help......

Click the image to open in full size.
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Old 03-29-2011, 05:41 PM   #4
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That's where it was but its not that either..ugh damn electrical bs..the fuel pump relay was wanting to pull in but was jus chattering n had already jumped it out from the battery n it pulled in fine.same w the eec relay..so I figured id see if the ground to the relay was the problem and it was...only thing is the fuel pump doesn't prime n shut off when u turn the key on it jus keeps running n wont start when I turn it over like its not getting any fuel..I checked for spark n that's all good but wondering if maybe the injectors aren't getting power idk im stumped..I have the schematic from Haynes manual n traced the ground it goes back to the computer in passenger kick panel..I checked continuity from fuel pump relay back to computer n it was good..wtf idk anymore
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Old 03-29-2011, 07:39 PM   #5
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How to fix an EFI No Start .... LUK
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Old 04-02-2011, 12:48 PM   #6
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Sorry for the late response ..workin crazy hours..but I checked out that link n I gotta say its the most helpful thing when trying to troubleshoot this bs..I jus went to advanced n ordered both stator n the tfi ..having a little trouble getting the stator out though...how do I get it off of the shaft?..once again thanks for the link joel very useful s*it
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Old 04-02-2011, 12:48 PM
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