1993 LX 5.0 fuel pump relay - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 13 Old 01-20-2003, 10:43 PM Thread Starter
 
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1993 LX 5.0 fuel pump relay

I hope that someone can help me. I have only 6.5 volts of power going to my fuel pump and inertia switch. I've been told that my problem may be a fried fuel pump relay switch. I just can't find the dang thing. I have a 93 LX 5.0. Does anyone know where the darn thing is?

Thanks for any help.

dpellegr

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post #2 of 13 Old 01-21-2003, 12:10 PM
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Since you have a 93 5.0, the relay will be in the engine compartment. It will be just forward of the passenger strut tower. There should be two relays there. One is for the A/C and the other is for the fuel pump.

I have an 89 GT and the fuel pump relay is under the driver's seat. I don't know when the change was made....

Good luck
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post #3 of 13 Old 01-21-2003, 12:21 PM
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under your mass air meter

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post #4 of 13 Old 01-21-2003, 01:11 PM Thread Starter
 
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what does it look like? The only things under the maf are 2 black square boxes which have plugs on the ends of them. Are they the relays?
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post #5 of 13 Old 01-21-2003, 01:24 PM
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Yes, and if you do a search, you'll know which one is which. I know I've explained in detail before which one is the FP relay and which one is the WAC relay, not sure who else has.

FYI, the changeover was made after the '91 model year.
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post #6 of 13 Old 01-21-2003, 01:45 PM Thread Starter
 
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I'm not sure if you have explained it before. I just joined/registered on this board last night. I did find two of them there. Are they the ones with the wires going in one end and a cap on the other with a 5 prong plug?

Sorry and thanks
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post #7 of 13 Old 01-21-2003, 01:49 PM
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Yes you have found them. Since it is probably too cold for A/C, you could just switch the relays to see if that cures your fuel pump problem. THat is if the A/C WOT relay is still good. THey are both 30a relays if I do remember correctly. If that fixes it, then figure out which one is which.


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post #8 of 13 Old 01-21-2003, 01:53 PM Thread Starter
 
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Casey - When switching them out do I have to unplug each wire and replug them in or just the cover with the male prongs in them
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post #9 of 13 Old 01-21-2003, 02:00 PM
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No need to unhook every single wire....There is a connector there believe me. I always unhook it from the engine compartment to get to it easier. THen you should be able to pull the relay apart from the connector. To disconnect it, pull the locking tab on the connector back a bit and give it a good pull. They should come apart. The relay is a small square and most often they are black. The cover you are talking about is the relay itself.



Casey
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post #10 of 13 Old 01-21-2003, 02:39 PM Thread Starter
 
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Thanks Casey - got it. It is fried and surprisingly enough, there are two brand new unused ones golted to the fenderwell. someone must have put new ones in and not used the ones attached to the fenderwell. I guess it's like having 2 spares.

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post #11 of 13 Old 01-21-2003, 06:18 PM
 
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where is it located on a 1986 GT
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post #12 of 13 Old 01-21-2003, 06:27 PM
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I have no idea on an 86 model. 87-90 is under the driver's seat. Look under there......

Casey
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post #13 of 13 Old 01-21-2003, 07:57 PM
 
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I found it under the drivers seat.

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