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Jeep Wrangler Maintenance and Repair Questions 2007 and newer

steverstever YooperlandPosts: 40,021
Please use this discussion for repair issues on your newer (2007+) Wranglers. Thanks!

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  • Don't know if this is the right board to put this Q, but what the hey...Just bought a 2007 4-door Unlimited Sahara last weekend. I'm finding that at freeway speeds, the truck bounces up and down a lot as if the road were very bumpy -- kinda makes me car sick :( This is my first Jeep -- is this typical Wrangler behavior, or do I have a tire balance problem?

    Would appreciate any feedback.
  • mac24mac24 Posts: 3,910
    It's not typical for the previous model, and the suspension layout is little changed for '07. However, I believe that spring rates and shock settings have been altered to give a more car like ride. It's definitely not a typical description of a tire problem.

    A certain way to check is to see if you can drive a similar model to compare behaviours.
  • I'm definitely not experiencing a "car like ride." I suppose I should go back to the dealership and see what they have to say. Thanks for the feedback.
  • boobahboobah Posts: 18
    Hey there,

    I ran into a guy who had the same problem..I can't remember what he called it...Jeep told him it was normal...he thinks it's a suspension problem, and is pretty nervous driving at high speeds...I'd go back to the dealer and raise hell..a car shouldn't do that anywhere, but especially on a highway...Good luck.
  • I have the 4dr and do not have this problem. It drives about as smooth as my wife's explorer.
  • pkearpkear Posts: 26
    I have the same jeep and have no problems with "bouncing". The suspension is stiffer than most SUVs and when I hit a bump with any speed it is a little hard however it rides on smooth pavement as smooth as anything else I have ever driven. I would think you have some problem either with tires or suspension and need to have it checked out at the dealer.
  • toostoos Posts: 12
    Does the 3.8L V-6 in the JK use a timing belt or a timing chain? If it is a belt, does anyone know at what mileage the belt must be changed and how much it costs to have that done?

    I am looking at 4-dr UNLIMITED Sahara
  • mreipmreip Posts: 9
    Anyone else have a HIGH PITCHED SQUEAL between 1500 and 2000 RPM's?
  • tidestertidester Posts: 10,110
    My first guess would be that it is one of the belts. Anyone else?

    tidester, host
    SUVs and Smart Shopper
  • mreipmreip Posts: 9
    Dealership replaced tensioner pulley, serpentine belt, throw out bearing, pushrod,and slave cylinder so far.Now the dealership is waiting on DCX to come up with another possibility. Any ideas?
  • mac24mac24 Posts: 3,910
    Anyone else have a HIGH PITCHED SQUEAL between 1500 and 2000 RPM's?

    Stationary, while in motion, or both?
  • mreipmreip Posts: 9
    While in motion when shifting. Revving the engine in neutral doesn't produce the noise.
  • mac24mac24 Posts: 3,910
    Just a guess, but it sounds like a bad input shaft (first motion shaft) bearing.
  • Getting a high pitch squeal out of the transmission input shaft bearing sounds odd... I have not had a Chrysler 6 speed transmission apart but most manual transmissions have roller bearings on the input shaft. If it is squealing, the pitch will rise with the RPM, but usually they just grind. My guess is a timing belt idler pulley. I believe there are 2 on the 3.8.
  • mreipmreip Posts: 9
    Thanks for the info.
  • jemmacjemmac Posts: 2
    I have a 2007 Jeep Sahara Unlimited. Recently I had to have the windshield replaced because of a crack from a rock.

    I went to a reputable glass place and had the windshield replaced.
    What I noticed after replacement was a high pitched noise (which sounds like a teapot coming to boil) at
    speeds between 30-45 MPH. I took the jeep back a week later
    and they replaced the windshield again.
    The results were the same only the speeds at which they occurred was 40-60 mph.
    As you know the windshield has no molding. Has anyone experienced this and found a reasonable solution?

  • mr_anton89mr_anton89 Posts: 72
    Just to relate to your windshield replacement situation, I had mine replaced and do not have any problems - except for what looks like a somewhat sloppy jop with lots of caulking around on the inside. Good luck.
  • clewsewclewsew Posts: 7
    I have a 2007 Jeep X Unlimited with an automatic and I also have the squeal that you describe at about 1800 RPMS - roughly 2200 RPMS. The dealer mechanic said that it sounds like normal engine noise to him. I want to drive another Jeep to see if I can reproduce the noise. We shall see.
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