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Old 08-28-2012, 03:45 AM   #1
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Flashing Service Engine light.

I was driving when all if a sudden it started idleling rough and flashing Service.

So I read its misfiring and the most common issues are bad coils or spark wires. I went n bought both new,motorcraft, and the rough jolting diminished but its still there. I now read it could be the spark plugs or fuel injector. What do you guys think before I take it to a shop?
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Old 08-28-2012, 06:26 AM   #2
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Maybe the O2 sensors, just try to replace it or just take it to the shop they can figure it out.
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Old 08-28-2012, 07:49 AM   #3
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If its flashing you should stop driving it cause it usually means your cats are getting destroyed or contaminated or something else but either way it's not good
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Old 08-28-2012, 08:26 AM   #4
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Re: Flashing Service Engine light.

I would try the plugs dude 10.00 bucks at wal-mart and 15 min in your drive way
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Old 08-28-2012, 08:30 AM   #5
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Yeah if it's more than one cylinder than look at a coil or even an O2 sensor for that cylinder bank but if it's only 1 cylinder than u have a spark plug, wire, or coil and try not to run it to much cause again you'll wipe out your cats
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Old 08-28-2012, 11:40 AM   #6
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Ok its 9am. In going go buy all new plugs,motorcraft, and replace them. If it doesn't stop ill just take it in. I just hate it when they charge a lot for something semi simple
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Old 08-28-2012, 01:37 PM   #7
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Re: Flashing Service Engine light.

get the codes ran (free at some auto stores) then go from there
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Old 08-28-2012, 06:50 PM   #8
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Damn so i replaced my plugs and the car is smooth as hell. The old plugs looked like they had gunk n carbon build.. I had just placed them in about 8 months ago though. Did I wait too long cause from what I heard is plugs usually are changed couple thousands of milea
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Old 08-29-2012, 01:19 PM   #9
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Re: Flashing Service Engine light.

you did them or you brought it to a shop
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Old 08-29-2012, 01:45 PM   #10
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I did them this time, last time I took them to a small local shop to get them installed.
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