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Old 10-28-2009, 09:23 PM
Junior Member
Join Date: Apr 2009
Posts: 4
Default P0302 Misfire in cylinder #2


I have a 2000 S40 with 70,000 miles. The car just developed a misfire on cylinder #2 and is throwing a P0302 error code. When I clear the code it comes right back immediately.

The engine runs fine except for a mis every 20-30 seconds, and soetimes it goes for a minute or two without a mis. I would think if it was electrical it would be more of a steady mis.

No other codes are present, and no misfires in the other cylinders.

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Old 10-28-2009, 10:23 PM
AutoNaut's Avatar
Senior Member
Join Date: Oct 2009
Location: MD
Posts: 537

Have you changed plugs lately? Possibly a bad coil.
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2002 S40 1.9T - R.I.P.
1998 V70 NA - Sold

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Old 10-29-2009, 09:46 AM
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Join Date: Jun 2008
Location: Omaha, NE
Posts: 688

Originally Posted by AutoNaut View Post
Have you changed plugs lately? Possibly a bad coil.
x 1,000,000
You can check the coil for signs of arcing (burn marks, etc)

P0302 = Cylinder 2 misfire

And in the future, my frequently asked questions thread has a lot of valuable information in it, including this info about misfiring.
Here: Frequently Asked Questions.
Previous: 2000 Volvo S40 1.9T
2009 MazdaSpeed3
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Old 10-29-2009, 09:46 AM

02, 2002, 850, 960, code, cylinder, error, misfire, p0302, po302, s40, s60, s90, v40, volvo

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