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Old 11-25-2017, 02:58 PM
 
Location: Mendocino, CA
857 posts, read 958,309 times
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2000 Mustang GT. Only 60K miles. Has been sitting in garage for past 4 years. Prior to that it was driving OK.

I'm trying to get it tuned up to drive it, but mechanic said fuel pump is dead.
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Old 11-25-2017, 03:09 PM
 
2,458 posts, read 2,473,619 times
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Could be you gas has gone bad.
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Old 11-25-2017, 03:44 PM
 
11,555 posts, read 53,154,100 times
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moisture in fuel/condensation may have caused the pump to fail

ethanol fuel is hygroscopic as well as slightly corrosive. This is why we see so many gasoline powered engines with corroded fuel system components.

so yes, it's entirely possible that the fuel pump has failed from 4 years of stale fuel in it.
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Old 11-25-2017, 06:50 PM
 
19,014 posts, read 27,562,983 times
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Oh c'mon. Clean contacts on pump plug and negative. Pumps don't go bad from being inside petrol. Unless it turned into tar somehow. And I have 5 yo petrol in my generator and it still starts and runs just fine.
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Old 11-25-2017, 07:19 PM
 
Location: Not far from Fairbanks, AK
20,292 posts, read 37,157,521 times
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Quote:
Originally Posted by ukrkoz View Post
Oh c'mon. Clean contacts on pump plug and negative. Pumps don't go bad from being inside petrol. Unless it turned into tar somehow. And I have 5 yo petrol in my generator and it still starts and runs just fine.
Good answer. By the way, I would first check the fuses for the pump and fuel injection system.
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Old 11-25-2017, 07:22 PM
 
Location: Outskirts of Gray Court, and love it!
5,671 posts, read 5,868,959 times
Reputation: 5802
Its probably rusted up inside the pump, most likely from condensation. That can happen if the tank was low. Does the fuel gauge work? I agree with checking the fuses first, but Id bet they are fine.
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Old 11-25-2017, 08:08 PM
 
Location: Sarasota FL
6,864 posts, read 12,070,521 times
Reputation: 6744
Turn the key to 'on'. Can you hear the relay click under the dashboard? You should be able to hear the fuel pump run for a few seconds to pressurize the system. Fuel pump runs constant with start/engine running. If the fuel filter has a bleed screw, loosen it slightly. If fuel spurts out, system is pressurized and fuel pump is working.
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Old 11-25-2017, 08:48 PM
 
Location: Phoenix, AZ
6,340 posts, read 4,892,353 times
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Quote:
Originally Posted by rhbj03 View Post
2000 Mustang GT. Only 60K miles. Has been sitting in garage for past 4 years. Prior to that it was driving OK.

I'm trying to get it tuned up to drive it, but mechanic said fuel pump is dead.
Yep, could be.


I've had it happen.


And when the fuel pump is in the gas tank, it's not going to be cheap.
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Old 11-25-2017, 09:42 PM
 
Location: Mendocino, CA
857 posts, read 958,309 times
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Quote:
Originally Posted by adjusterjack View Post
Yep, could be.


I've had it happen.


And when the fuel pump is in the gas tank, it's not going to be cheap.
Mechanic says fuel pump cost $540, add labor to it for a total of $900.

If in fact pump is dead -- I'm not 100% sure but if it is -- then is the car worth doing this? The car has low mileage and is in good condition, but it is a 2000 model... Bluebook value is only about $2000...
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Old 11-25-2017, 10:09 PM
 
33,387 posts, read 34,820,716 times
Reputation: 20030
can a fuel pump o bad from just sitting in a tank of fuel? yes it can, and in a number of ways. water can cause bearings to freeze up, rust can form, fuel goes bad and can gum up the pump.

as for replacing the pump, look around for the sending unit, usually located at the top of the tank, and note where it is. and then go inside the car and see if there is an access panel for the sending unit. if there is, then you can do the job fairly easily, if not then it will take you a bit longer.

if there is no access panel, then you need to drop the tank, not a hard job to do, just a bit time consuming. and since you have to drain the old fuel anyway, you may as well do it now. get yourself a shop manual for the car and find the procedure for replacing the fuel pump.
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