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The fiancée has a 2004 9-3 Aero with a problem. If you get heavy into the throttle at low revs it starts, what feels like, misfiring. It stumbles quite a bit and the CEL flashes for a few seconds afterward. I picked up new plugs since that is the cheapest possible fix right now. If it ends up being coil pack related, what is the best way to find the bad pack? I know I can swap a new one in every position but that may be too time consuming as this problem is sporadic. Is this something that an OBDII scanner can diagnose? *ETA* New plugs did not solve the problem. bung fucked around with this message at 00:20 on Dec 28, 2009 |
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Dec 27, 2009 22:09
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| # ¿ May 12, 2024 07:15 |
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Captain Crunk posted:For the 2004 Aero I am 90% sure it's the DIC, try and find another one to swap/test with if you can. Could also be the CPS, but usually the car will run rough hot and not start until it cools down in that case. It has individual coils for each plug. Would investing in a CAN OBDII reader be a bad idea for the Saab? I can use it for the Subaru but I still have 2 years of warranty for the WRX.
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Dec 28, 2009 04:01
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I can't seem to find a service manual for the 04 9-3. I've asked in another thread here in AI and I was told that the Haynes manual is worthless. Has anyone used the Mitchell 1 DIY service subscription? Is it worth the price? bung fucked around with this message at 21:02 on Jan 3, 2010 |
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Dec 30, 2009 07:29
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I think I may have found the source of the misfire. The code scanner showed a P0302, misfire on #2. To determine if it was actually the coil, I moved it to all of the other cylinders to see if it still missed. It did but didn't ever generate a CEL. I'll have a new coil tomorrow and I hope it fixes this problem. Next is replacement of the rear rotors and pads which have almost no friction material left. After that will be new suspension. 
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Jan 6, 2010 17:39
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The new coil for cylinder 2 fixed my misfire.
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Jan 10, 2010 06:41
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My wife has a 2004 9-3 Aero and I haven't had any luck finding a service manual. A local guy who works on Swedish cars told me that I could use a manual for the GM Ecotec 2 liter. Does this sound like a good route to take?
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Aug 11, 2011 17:35
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I need a recommendation for an online source for an ignition coil for an 04 9-3 Aero. This will be the 3rd coil to go bad in the last two years.No one has them locally for less than $150. And I can't remember who I ordered from the last time.
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Jan 30, 2012 21:26
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| # ¿ May 12, 2024 07:15 |
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Thanks keykey. I had forgotten about Rock Auto.
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Jan 31, 2012 22:43
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