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What is EPC?

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Old Jan 13, 2004 | 11:11 AM
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What is EPC?
I checked my codes and they say "Electronic Pressure Control failure".

What is that?

Thanks!
 
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Old Jan 13, 2004 | 11:49 AM
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What was the code #
 
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Old Jan 14, 2004 | 10:55 AM
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I think it was 624

They pulled the codes at Autozone, and he didnt know what the "electronic pressure control" meant either.

Thanks for your help
 
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Old Jan 14, 2004 | 02:35 PM
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The only thing I can think of is something in an automatic transmission...
 
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Old Jan 14, 2004 | 02:53 PM
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no noticable problems with the tranny yet.

I do get the check engine light on and off, only while on the highway.

anyone else?
 
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Old Jan 14, 2004 | 04:26 PM
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What transmission is it? Can you tell if the torque converter is locking or not?
 
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Old Jan 14, 2004 | 08:48 PM
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I would bet it has to do with the line pressure in the trans. does it seem like it's shifting overly harsh? I had the flashing overdrive button happen to me before too. I ended up disconnecting the battery to reset the computer and haven't had any problems since. Knock on wood
 
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Old Jan 15, 2004 | 06:56 AM
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How would I know if the torque converter is locking up on the highway? It seems to slip more than normal in the cold morning in first gear, but thats about all I notice. It drives decent and can spin my big tires.

Its an E4OD by the way
 
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Old Jan 20, 2004 | 07:29 AM
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anyone else?
 
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Old Jan 20, 2004 | 12:09 PM
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have you replaced the fluids in the torque converter?

And do you do break torques, burnouts whatever.
I've heard of them screwing up torque converters.
 
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Old Jan 21, 2004 | 12:16 AM
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When the torque converter locks/unlocks, it feels like a shift, but the RPMs only change about 100-200 RPM.
 
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