Rough Idle
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Member
Joined: Jan 2007
Posts: 36
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From: Santee, Ca.
Rough Idle
Any Ideas!
New to forum. First post.
2003 F150 5.4L Screw 32,000 miles. Been happening for about 2 weeks. Engine idles a little rough about 90% of the time, but the other 10% it's so smooth I would not be able to tell it was running if it wasn't for the Flowmaster. Monday CEL light came on for 2 or 3 minutes and then went off. (cylider 1 missfire) Cleared code and it has not came back.
Also is the Lightning muffler any different then stock muffler. Have friend that will give my stock lightning exhaust.
COP?
K&N drop in, 3.55LS, Flowmaster catback SI/SO, Lots of chrome, Captains Chairs, 285/50's on 20's. 1200 watt audio, Heavy duty tow package, Wood Dash kit
New to forum. First post.
2003 F150 5.4L Screw 32,000 miles. Been happening for about 2 weeks. Engine idles a little rough about 90% of the time, but the other 10% it's so smooth I would not be able to tell it was running if it wasn't for the Flowmaster. Monday CEL light came on for 2 or 3 minutes and then went off. (cylider 1 missfire) Cleared code and it has not came back.
Also is the Lightning muffler any different then stock muffler. Have friend that will give my stock lightning exhaust.
COP?
K&N drop in, 3.55LS, Flowmaster catback SI/SO, Lots of chrome, Captains Chairs, 285/50's on 20's. 1200 watt audio, Heavy duty tow package, Wood Dash kit
Last edited by DaHangLow; Jan 23, 2007 at 02:15 PM.
Thread Starter
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Member
Joined: Jan 2007
Posts: 36
Likes: 0
From: Santee, Ca.
Under acceleration runs great. I cleared the code and it did not come back. Its not a constant rough idle. It will run smooth stumble a few times and run smooth for a few seconds. Also my gas mileage seems to be going down.
Last edited by DaHangLow; Jan 23, 2007 at 10:34 PM.
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Joined: Jun 2002
Posts: 36
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From: Dallas,Texas
Originally Posted by DaHangLow
Under acceleration runs great. I cleared the code and it did not come back. Its not a constant rough idle. It will run smooth stumble a few times and run smooth for a few seconds. Also my gas mileage seems to be going down.
I bet before long it will start missing under load...if it wouldn't of had that cylinder one misfire I might think different but I have had that damn code 4 times now and the C.O.P. has been the culprit each time....