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2004 shuts off randomly

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Old 04-21-2014, 11:21 PM
cbigtodd cbigtodd is offline
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2004 shuts off randomly

2004 expy shuts off at highway speed. No sign of the bad wire like the other one on here and YouTube. Has anyone had to replace the switch, cut new keys and reprogram the ecm. Mine is leaving no codes either. Runs absolutely great otherwise.
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Old 04-23-2014, 10:58 PM
khangmai khangmai is offline
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My guess would be the fuel pump or its relay
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Old 04-24-2014, 06:44 AM
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Quote:
Originally Posted by khangmai View Post
My guess would be the fuel pump or its relay
I think you're right on here. I've had to replace my fuel pump twice and both times my wife ignored or just didn't recognize the symptoms and when it goes out, that's it.
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Old 04-24-2014, 10:11 PM
Diverdom Diverdom is online now
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Not sure if the 04s have this but my 06 Navi went down with a bad fuel pump driver module. Its on the frame near the left rear wheel. This thing controls voltage to the pump. It rots out and let's in moisture causing all sorts of ugliness. Just a thought.
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