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98 TJ TPS problem


 
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dst55
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Joined: 25 Aug 2005

PostPosted: Thu Aug 25, 2005 10:52 am    Post subject: 98 TJ TPS problem Reply with quote

I've been having trouble with troubleshooting an electrical problem with my "98" TJ. My Jeep is running rough and the Check Engine light came on after my Jeep got caught in a downpour with the top down. I plugged a code reader into it and the reader said my Throttle Position Sensor was reading high at .78 volts. I replaced the TPS and the problem persists. With the ignition on the supply voltage to the sensor pin 3 is 5.13 volts, pin 1 is at ground or 0 volts and pin 2 still reads around .8 volts with the throttle closed.
I'm at a loss how to continue troubleshooting my problem, any assistance would be greatly appreciated.

Additional information:
The horn goes off by itself, and sometimes the fuel gauge intermitently fails and shows Empty with plenty of fuel in the tank.
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lawrence914
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Joined: 18 Jun 2005
Location: Huntsville, Alabama

PostPosted: Mon Aug 29, 2005 3:08 pm    Post subject: Reply with quote

I *might* be having the same problem... I'm interested to know if you had any resolution on it?

-Lawrence
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dst55
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Joined: 25 Aug 2005

PostPosted: Tue Aug 30, 2005 9:40 am    Post subject: Jeep TJ TPS Problem Reply with quote

Check out some other responces that I received at: http://www.wranglerforum.com/showthread.php?t=389
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woodsytc
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Joined: 21 May 2004

PostPosted: Wed Aug 31, 2005 3:52 am    Post subject: Reply with quote

i was having the same problem for a month or two and then the "brain" (PCM) went and got itself fried! good luck! the PCM cost about $600 from the dealer. i found used and salvaged pcm's from $250~400 but then you need the pcm programmer to transfer the codes (only the jeep dealer had this and wanted almost $200 to do the program) OY! Rolling Eyes Finger

woodsy
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