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HELP!

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Old 07-12-2011, 06:34 PM
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my jeep is vibrating at 45 mph and when I slow down and it pops in the rear end when u take off fast. Also how do I bump the idle up bc its running at about 650 when it should be at about 1000 to 1100 plz help its my dd. Need help quick
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Old 07-12-2011, 06:39 PM
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Sounds like maybe a u-joint in the rear maybe,idle could be IAC or TPS or a bunch of stuff has it thrown a code yet?
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Old 07-12-2011, 06:49 PM
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650 rpm sounds about right and checking the rear shaft for play in the ujoint should be were you start
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Old 07-12-2011, 10:12 PM
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Ok ill check it tomorrow
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Old 07-12-2011, 10:14 PM
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Originally Posted by Skunkape
Sounds like maybe a u-joint in the rear maybe,idle could be IAC or TPS or a bunch of stuff has it thrown a code yet?
It hasn't thrown a code and I'm not sure what either of the IAC or TPS means
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Old 07-12-2011, 10:19 PM
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IAC means Idle Air Control and TPS means Throttle Position Sensor
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Old 07-12-2011, 10:20 PM
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1000 RPM is high from what I have seen. All 3 I have owned run right around 650 or so. And I would guess drive shaft U-joint too.
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Old 07-13-2011, 07:11 AM
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Originally Posted by brutalxj
1000 RPM is high from what I have seen. All 3 I have owned run right around 650 or so. And I would guess drive shaft U-joint too.
X1 .unless its idling rough don't screw with it.
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Old 07-13-2011, 09:18 AM
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Well when I'm at a stop light it wants to die almost. If I don't put it in neutral it starts shaking a wee but
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Old 07-13-2011, 09:35 AM
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Do a tune up. Plugs wires cap rotor air filter.
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Old 07-13-2011, 09:36 AM
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Moved to OEM tech.
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Old 07-13-2011, 09:16 PM
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Got it fixed
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Old 07-13-2011, 09:16 PM
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I'll post pics of the problem in a min
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Old 07-13-2011, 09:19 PM
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That's my old u joint
Attached Thumbnails HELP!-forumrunner_20110713_211917.jpg  
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Old 07-13-2011, 10:10 PM
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looks fine to me
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