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EPC Light

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Old Sep 27, 2007 | 09:42 AM
  #1  
KylesA4's Avatar
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Default EPC Light

Hey Everybody,

I did some searches through the threads and couldn't find anything specific... I need your help. I have a 02 A4 1.8t and its been giving me some problems lately. I had an ignition coil go bad lately soI replaced them all and it ran fine. But a few times lately when I start my car my EPC light will stay on. I also havestalled three timesslowing to red lights, and it takes a couple tries to get it turned over.

I have some ideas but I am not sure where to go until I pull some codes from Auto Zone at lunch. Has anybody had any similar problems?

Side note: on a recent road trip myoil light came on and I was forced to use a non synthetic thicker oil. I am scheduled to drop my car off on Tuesday for an oil change as my independent is very good but also very busy.

Thanks for all your help.
 
Old Sep 27, 2007 | 01:31 PM
  #2  
KylesA4's Avatar
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Default RE: EPC Light

Okay just got back from pulling codes.

I got the P0300
and a P0303

I am assuming the 303 is from the bad coil pack I replaced and never reset the code. The 300 indicates a cylinder misfire but in a random cylinder. It also lists the possible causes but I was wondering if anybody else encountered this same problem.

Thanks.
 
Old Sep 27, 2007 | 03:26 PM
  #3  
CRAZYHAWK's Avatar
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From: Northern NJ USA
Default RE: EPC Light

P0300 comes on when any of the following occurs;
P0301
P0302
P0303
P0304
 
Old Sep 28, 2007 | 02:41 PM
  #4  
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Default RE: EPC Light

Gotcha thanks... I'm taking it in on Monday so I'll post what the problem was as soon as I find out.
 
Old Oct 2, 2007 | 11:28 AM
  #5  
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Default RE: EPC Light

Okay... I said I would post what the shop found when I got it back so here goes. I think they are stumped. They told me they ran some codes and all of them dealt with the EPC. They reset the codes and $75laterits in my parking space. However when atidle rpms are still at 900 instead of the usual 1100. I don't know what to do and I'm sure it will be back in the shop before the week is out.
 
Old Oct 9, 2007 | 04:23 PM
  #6  
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Default RE: EPC Light

Just thought I'd post my progress in case anybody needs it. Check engine light popped on again and got code P0321... Code indicated a problem in my crankshaft position sensor apparently aka the engine speed sensor. After messing around with the wiring, looked okay. I ordered the part ($70) and it will be here Thurs morning. I found a link that could be helpful to install it. I'll let you all know how it goes.

http://www.a4mods.com/index.php?page...eedsensor.html
 
Old Oct 12, 2007 | 12:58 PM
  #7  
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Default RE: EPC Light

Put the sensor in and have ridden 100 trouble free miles so far. Looks like it was the speed sensor.
 
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