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Old 12-26-2005, 03:19 PM
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2 times the fun 2 times the problems

Two issues crept up after my last off roading adventure. I didn't go anywhere too rough, just some trail riding after the rain. First problem, when I start the jeep, hot or cold, it runs up to 1500-1800 rpms and sits there for about 5-10 minutes before it finally goes back down to regular idle. I've gone over every vacuum line and intake seal with no luck. Second, I'm tearing up u-joints again. The rear driveshaft joint keeps falling apart and it's only on the ends that have the bolt down straps. They seem tight when I put them in, but they loosen up horribly whether I'm offroading or just daily driving. I'm stabbing at the obvious answer, but should replacing the straps fix this problem?

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Old 12-26-2005, 05:31 PM   #2
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I had the sam problem with my bought a code reader and foung that the TPS was malfunctioning changed it and it's running great now

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Old 12-26-2005, 06:14 PM
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Awesome, sounds reasonable. Wonder what made it go bad?
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Old 12-27-2005, 05:54 PM
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Pulled my tps. It was corroded inside really bad. Sprayed it out with carb cleaner and ran a good layer of dielectric grease over the contacts. Everything works great now. Thanks!
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Old 01-01-2006, 09:25 AM   #5
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You could just try some loctight on the straps to see if the hang on longer. I can't imagine that they cost more than a couple of bucks though. Even with the new ones loctight would be a good idea.
87 YJ, 5.7/TH350/NP241, Custom 4 link/ Radius Arms, ADS Nitrogen Shocks, 35" Cooper STT
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Old 01-04-2006, 01:30 PM
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Figured that one out too. The vibrations I was getting were due the the "nipples" on the yoke that are suppose to hold the u-joint center. They were bent out slightly and it allowed the u-joint to be off balanced. New straps and u-joint plus one big hammer and presto, no more vibrations. Rides like a new Jeep.

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