Fuel Pump Fuse Keeps Blowing - 2000 GT - Ford Mustang Forum
 
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post #1 of 4 (permalink) Old 06-19-2016 Thread Starter
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Fuel Pump Fuse Keeps Blowing - 2000 GT

Hey everyone,

My 2000 Mustang GT broke down last week and I had to get it towed home. Just now got around to working on it and found the fuel pump fuse was blown. I replaced it with a new 20 amp fuse and it fired right up. Drove it a mile down the road and it broke down again. Sure enough, the fuse blew AGAIN!
A couple of things you should know:
1. I replaced the fuel filter just 2 days before it originally broke down. I double checked all the fuel lines, and they are connected and not leaking.
2. My battery is giving me some trouble and should probably be replaced soon.
I'll be getting my battery checked tomorrow. Can anybody advise on what my next steps should be in order to track down the issue?
Thanks!


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post #2 of 4 (permalink) Old 06-19-2016
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Check all your fuel pump wiring to make sure it not bare and touching metal. I'm willing to bet it's a bad fuel pump though.

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post #3 of 4 (permalink) Old 06-20-2016
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Only time I had something like this happen was an internal short in the pump.(different car same theory) In my case it happened as soon as I applied power to the pump. However if your pump is old it could be heating up after a few minutes and shorting out or seizing up causing a spike in amperage popping the fuse.

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post #4 of 4 (permalink) Old 06-20-2016 Thread Starter
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Quote:
Originally Posted by blu13gt View Post
Only time I had something like this happen was an internal short in the pump.(different car same theory) In my case it happened as soon as I applied power to the pump. However if your pump is old it could be heating up after a few minutes and shorting out or seizing up causing a spike in amperage popping the fuse.
Yeah I'm leaning more towards a bad pump. But it's strange, after the fuse blew the second time and I broke down (yesterday), I was able to drive it home on a new fuse. But that one never blew. In the back of my mind I wish that I just replaced it with a bad fuse. Is there any way to test if the fuse will blow again without driving it? I thought about letting it run for a while revving it until it died?

2000 Mustang GT!!!
FRPP Intake manifold, Flowmaster 40's with larger pipes and tips (Nice deep tone).

"I want to own a shop where people can come and not get completely ripped off" - Ludacris (Fast Five)
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