1999 Ford Mustang Fuel Pump/Winter Storage


Electrical problem
1999 Ford Mustang V8 Two Wheel Drive Manual 54,000 miles


I own a 99 mustang GT with 54K and is in mint condition (never seen snow or rain) and spends most of its time parked in my parents garage. This car is in the same shape as the day it rolled off the factory line.

With this said, I store the car during the winter. Due to threats of break-in's and car theft in the area, I disconnect the plug to the fuel pump relay switch in the trunk, and run the engine until stall.

The other day when I attempted to start the car, I noticed that the fuel pump would not activate upon re-connect. Not surprising the engine will not start (no fuel or pressure).

I have checked voltage at several places within the system. The fuses are all fine. CCRM is fine and there is positive current to the fuel pump relay and after the relay. The kicker however, is that the actual fuel pump relay siwtch also checks out fine, current wise. I tried jumping the swith with a jump wire, and still the fuel pump would not activate. I therefore conclude that the problem is somehow the actual fuel pump?

Wire is hot going into and out of the fuel pump relay switch. I dont understand how the fuel pump could go bad especially when it was running as I put the car away for the winter last fall/ I want to make sure it is the pump before ripping the fuel tank off. Could it be anything other than the fuel pump?

Many many thanks,

Do you
have the same problem?
Monday, March 16th, 2009 AT 12:04 AM

1 Reply


Mr Casey

To catch this problem direct power from the battery positive post to the red and black wire on the fuel pump connector. If it comes on-test the fuel pump driver module

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Monday, March 16th, 2009 AT 12:25 AM

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