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For a few months now I have had a humming/howling noise whenever the Jeep hits 40mph on the dot. The sound increases with more speed but levels out at about 65mph and is then oscillating, changing between a little higher and then lower pitch every couple seconds. Almost like the A/c cycling on...

For a few months now I have had a humming/howling noise whenever the Jeep hits 40mph on the dot. The sound increases with more speed but levels out at about 65mph and is then oscillating, changing between a little higher and then lower pitch every couple seconds. Almost like the A/c cycling on...

Ok, need some help with this please: 05 KJ, 280k miles. Brand-new spark plugs (the correct copper type) and refurbished all 6 coils at the same time. Had a P0172 code pop up. Cleared code and ran some injector cleaner through with a full tank of gas. Code returned along with p0456. Bought new...

Hello, I have been reading many helpful posts on this forum for years but always had a trustworthy mechanic friend to ultimately figure things out. Now that he's retired and moved away I am on my own, lol. 2005 Liberty 3.7 4x4 with 274,000 miles (all mine :) with check engine light on and...