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Old 10-09-2012, 05:08 PM   #1
BigMuthatrknG
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Car dies when stopping

I have been experiencing this problem for about a month now. The battery light comes on every once in a while when I am driving. No other warning light shows. When I am not moving it idles really low and starts coughing. If i don't clutch brake to a stop and keep the revs high it will just die altogether. My gf's dad is a ford master mechanic and he said it sounds like the alternator but I disagree. Usually when it is the alternator the check engine light comes on too. Any advice?


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Old 10-09-2012, 07:07 PM   #2
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Its gonna be the alternator, when my alternator started to die my battery light turned on and off And my check engine light never turn on change the alternator before u have to change it and the battery too
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Old 10-09-2012, 09:13 PM   #3
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I had a similar problem, replaced my coil pack and it was good as new.
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Old 10-09-2012, 10:57 PM   #4
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I had a similar problem, replaced my coil pack and it was good as new.
I'm pretty sure it would register a misfire wouldn't it.
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Old 10-10-2012, 05:20 AM   #5
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Quote:
Originally Posted by BigMuthatrknG View Post
I'm pretty sure it would register a misfire wouldn't it.
Not always. A flashing CEL indicates a misfire on every rpm, but if it's a random misfire, then the computer doesn't always record that. To the ECU, it might not be a misfire because spark signal was sent, but it might not be strong enough to fire the charge.

No, the PCV vacuum line won't be collapsed when the engine is not running. It is engine vacuum that collapses the line.

A loose battery terminal will cause the conditions you've described, and that's where you should start. Remove the terminals, clean, replace. If you find corrosion: I recommend greasing the battery terminal after installing/tightening. That will prevent future corrosion.
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Old 10-09-2012, 09:25 PM   #6
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Sounds like the alternator to me, and if he's a Ford Master Mechanic he may know what he's talking about? They are known to go out on our cars from time to time.
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Old 10-09-2012, 10:28 PM   #7
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Quote:
Originally Posted by sleepyboy View Post
Sounds like the alternator to me, and if he's a Ford Master Mechanic he may know what he's talking about? They are known to go out on our cars from time to time.
I know and I usually trust his decision. I was going to get a general consensus cuz I know this alt will be a bitch to replace. Would have been nice if it was in the front like my camry
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Old 10-09-2012, 10:31 PM   #8
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Well it's not what I would call fun replacing that's for sure lol


I also moved your thread to the Technical Chat area
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Old 10-09-2012, 10:43 PM   #9
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you may want to confirm you have no vacuum leaks at idle either. if it drops down below charging speed it can light up the battery indicator.
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Old 10-09-2012, 10:49 PM   #10
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Quote:
Originally Posted by mikebontoft View Post
you may want to confirm you have no vacuum leaks at idle either. if it drops down below charging speed it can light up the battery indicator.
That's what it seems to be doing but where would I check for that?
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