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Old 03-29-2011, 05:27 PM   #1
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Throttle Position Sensor

Hey Everyone, I just installed a new TPS(Throttle Position Sensor) in my 2002 jeep wrangler 4cyl. It used to idle around 500rpm but after the installation it idles at about 1200 to 1500 rpm. It just seems too high. Any suggestions?

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Old 03-29-2011, 05:46 PM   #2
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Did you clear the computer? You need to use a scanner or disconnect the battery for awhile.

Hook the battery back up and idle it awhile, like 5 minutes. Should return to normal

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Old 03-29-2011, 06:07 PM   #3
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Thanks GroundHawg I disconnected the battery and it did the trick
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Old 03-29-2011, 06:36 PM   #4
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Old 03-29-2011, 10:41 PM   #5
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That's interesting because mine was idling too high on my '02 Sahara. I changed the TPS, but didn't disconnect the battery or clear the computer and it worked like a charm.
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Old 03-29-2011, 11:05 PM   #6
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Sometimes they don't. I don't know why. Other times the computer needs reset.

If you had someone shut off the check engine light that'll reset it. Seems it only happens on that OBDII stuff.

I got a few scanners so I always clear the computer when changing sensors or fixing something. That way when things start screwing up I know what's going on and don't get mixed up
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Old 03-30-2011, 10:32 AM   #7
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What's the standard idling RPM
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Old 03-30-2011, 12:25 PM   #8
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I don't own a TJ, but I want to say 90% of them I see a warm idle settles at 700rpm. You can stall them out at 300 so I'd shoot for somewhere between 500-700.
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Old 03-30-2011, 06:58 PM   #9
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I just put a new TPS and it's a little better but when it gets warmed up it will go to 500 and bounce fluctuating
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Old 03-30-2011, 08:46 PM   #10
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Quote:
Originally Posted by 2dmud View Post
I just put a new TPS and it's a little better but when it gets warmed up it will go to 500 and bounce fluctuating
That may be due to a dirty IAC (idle air controller)...it's on the throttle body as well and can be cleaned with a can of throttle body cleaner.
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Old 06-13-2011, 11:15 AM   #11
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tps recently replaced

i just had my tps replaced and i'm sometimes having hesitation with acceleration.........especially from first to second and also at high speeds, can anyone tell me what might be wrong now?
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Old 06-13-2011, 12:22 PM   #12
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Thousand things, even the new TPS could be bad.
Dirty injectors, weak fuel pump, needs a tune up, etc, cat convertor going bad,etc, etc.

Did you unhook the battery to clear the memory after you did it?

And sometimes it takes a bit for the computer to learn the new sensor.

And make sure you got the correct sensor. 95 through 06 if memory serves me, all use a 2 bolt sensor, and they all look alike, yet they use 3 different part numbers, depending on the years.

Some will even plug right up. I know Jerry B had a 97 that came from the factory with a 95 harness. He went to replace his TPS and had to buy one for a 95 to match up to the harness.

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