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Old 07-14-2013, 03:40 AM   #1
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2012 mustang dies while driving

Pulled out onto an access road and the car just died while shifting into second. Car refuses to start and just cranks over. I tried using the fuel pump reset because I can't hear the fuel pump turning on at all... No dice. Unplugged the battery and it didn't help at all, so I'm confused. I'm very mechanically inclined and I know it's not getting fuel but I have no idea why. Maybe fuel pump relay? Car has no tune and no fuel mods. Intake is completely sealed up and filter is super clean. Anybody have this happen?
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Old 07-14-2013, 10:25 AM   #2
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Wow, that's no bueno, I know there was a number of PCM updates for the 11-12, I would see if he dealer has any update for you

Is it still under warranty?
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Old 07-14-2013, 10:51 AM   #3
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try your second programmed key...it could be a transponder issue.

It's unlikely it's something major and pretty likely it's something to do with your anti-theft or PCM. Do you have a code reader or anything that could tell you you have connection to the PCM?
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Old 07-14-2013, 01:10 PM   #4
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Quote:
Originally Posted by GrabberBlue5.0 View Post
Wow, that's no bueno, I know there was a number of PCM updates for the 11-12, I would see if he dealer has any update for you

Is it still under warranty?
Yes it's got a 100k warranty until 2018 and I'm hoping its something simple. Only bad thing is that the closest dealer isn't open until Monday and I have to be at work at 530am with my car on the opposite side of town in a parking lot lol.

---------- Post added at 01:10 PM ---------- Previous post was at 01:06 PM ----------

Quote:
Originally Posted by 5LHO View Post
try your second programmed key...it could be a transponder issue.

It's unlikely it's something major and pretty likely it's something to do with your anti-theft or PCM. Do you have a code reader or anything that could tell you you have connection to the PCM?
I don't have a programmer . I hadn't bought one because I've been waiting to get a tune and all of that. I'll likely have to have it towed to the dealer on Monday :/.
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Old 07-14-2013, 03:25 PM   #5
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Okay guys, so I went back out to my car and with the help of my owners manual I determined it was the ignition switch. Too bad the ignition switch is controlled by the computer. So I found the fuse for the ignition switch and of course it's fried. It's a 20amp fuse 27 I believe and I pulled fuse 16 that was 20amps also and unused an the car fired right up. I wasn't able to determine why it blew in the first place. No rain, no electrical system modification, all fuses are plugged all the way in. Car has 20,157 miles and the most serious mod it has is a JBA (after cat) h-pipe. Guess I'll have to tell the dealer so they can tell me it's fixed now and not really do anything about it
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Old 07-14-2013, 03:45 PM   #6
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It's possible that the fuse itself was defective and failed prematurely. I'd try to keep an eye on it though.
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Old 07-14-2013, 04:51 PM   #7
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It's possible that the fuse itself was defective and failed prematurely. I'd try to keep an eye on it though.
Yeah I have no idea. On my lightning I've done all kinds of electrical work an I've blown many of fuses from shorting grounds and things but my car is stock in every one of those aspects.
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Old 07-14-2013, 09:27 PM   #8
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