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Random misfire troubleshooting​


ThreePhase

New Member
Joined
Apr 4, 2017
Messages
2
Vehicle Year
2003
Transmission
Automatic
Hey guys, this is my first post so forgive me if it's in the wrong spot.

I have a 2003 range with the 4.0 V6 and the previous owner put in a K&N filter. It idles really rough and misfires​ at random. I've just cleaned the throttle body, IAC, and MAF sensor, but that didn't do anything for me. The PCV elbow looks good, and my engine doesn't have an EGR. I scanned it and I have p0171 p0174 p0300 p0316. Also, it seems to misfire a little while driving, but it's hard to tell. I just changed the spark plugs too. Any ideas? Any help would be appreciated. Thanks!

Sent from my ONE A2005 using Tapatalk
 

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