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  #217  
Old 04-23-2013, 03:30 PM
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Re: Surging, pulsing while driving

Def sounds like a shifter problem man.. Is your check engine light on? When you shift it into drive do you get a hard clunk or do your PRND indicators light up all at the same time.?
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  #218  
Old 04-23-2013, 06:29 PM
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Re: Surging, pulsing while driving

No check engine light. no hard clunk unless I give it gas after I shift it from a stop or reverse. but I think that's something to do with U-Joint. No PRND light at same time.
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  #219  
Old 04-23-2013, 08:46 PM
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Did you put new coils on?
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  #220  
Old 04-23-2013, 09:02 PM
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Re: Surging, pulsing while driving

No new coils
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  #221  
Old 04-24-2013, 05:56 PM
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I'm almost certain it's a shifter assembly problem, there a thread on here on how to clean the contacts, try a search
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  #222  
Old 05-08-2013, 08:25 PM
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Re: Surging, pulsing while driving

It is the TPS. I'd almost bet on it. If it surges or feels like the tranny is slipping its because there is a "dead" spot in your TPS. Makes a vehicle do funny things since the ECM is getting faulty readings from the TPS. It's only around 50-60 bucks and fairly easy to get to on the throttle body.

Good Luck!!
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Old 05-08-2013, 08:31 PM
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I don't see why it would be the tps since my jeep will shutter regardless of where the throttle is...that is unless I press so hard that the trans downshifts. Also, it will only happen in 4th or overdrive. If the tps was the problem, wouldn't there be some symptoms in other gears too? You could be right but I am skeptical!
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  #224  
Old 05-08-2013, 09:39 PM
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Re: Surging, pulsing while driving

Quote:
Originally Posted by cblowers View Post
It is the TPS. I'd almost bet on it. If it surges or feels like the tranny is slipping its because there is a "dead" spot in your TPS. Makes a vehicle do funny things since the ECM is getting faulty readings from the TPS. It's only around 50-60 bucks and fairly easy to get to on the throttle body.

Good Luck!!
This problem happened before i changed my TPS. I have had the new TPS in for over a year. Jeep dealserhip checked voltage coming out of tps and said it was normal.
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  #225  
Old 05-08-2013, 09:59 PM
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Re: Surging, pulsing while driving

And if it was the tps wouldnt this mean the problem would still persist in Manual mode. Because in manual mode it drives fine.
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  #226  
Old 05-08-2013, 10:15 PM
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My money is on shifter assembly, it's so expensive just to buy and test with that's the bad part.
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  #227  
Old 05-09-2013, 05:36 AM
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There is a nice video on YouTube about removing the shift control unit and cleaning it. I am going to try it when I have some time.
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  #228  
Old 05-12-2013, 11:42 AM
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Re: Surging, pulsing while driving

Has anyone heard about the recall on our jeeps for the shifter control module. Apparently it will cause the transmission to shift into neutral. I wonder if my problem could be related.
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