dtc code p0340 help please
Well, I put it back to stock and drove for a minute with the a/c on. It went fine for about 10 minutes, then the light kicked on. I'm gonna take it in to the dealer next week and let them fix it, warranty and all. Thanks again, I can't wait til it's over.[&:]
***update***
I took it to the dealer and they said it was the alternator after all. They replaced it, free under warranty, and have not had a problem since then.
Oh well, worked for me I guess. Thanks for the help everyone!
- C
I took it to the dealer and they said it was the alternator after all. They replaced it, free under warranty, and have not had a problem since then.
Oh well, worked for me I guess. Thanks for the help everyone!

- C
I returned it stock so I wouldn't take any crap over it. I put the tune back in as soon as I got her back and it has ran fine since then. That was yesterday. I know it's fine because the maximum it would go with the tune before the light came on after a dtc reset was aboout 30 sec before I took it in. It's been over a day now so I'm not worried. 
- C

- C
Mine took about 10 min after returning it to stock. Just turn on your a/c and drive. I know, it's so annoying going back to stock. Lag and blahhhh. It will come on, then take it in. If they ask why it appears it was reflashed, just say you did the old unplug the battery test, and it obviously didn't reset the dtc. 
- C

- C
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lincolnshibuya
V6 (1994-2004) Mustangs
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Dec 8, 2015 04:37 PM




