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Old 03-28-2012, 11:43 AM
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Throttle Position Sensor going bad

Think I have a TPS going bad. Without using cruise control all seems normal. Using cruise between 40-55 mph the RPMs surge from 1600 to 2100 then drops down to 1600 then back up to 2100 til either I cancel the cruise or get it above 55mph.

Google and reading posts point me in that direction. Dealer wants $84 for their part. I'll probably get a NAPA or similar off brand for $40.

Anyone have any experience or thoughts?
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Old 03-28-2012, 12:30 PM
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Re: Throttle Position Sensor going bad

You think it would do it with or without cruise but if you have a lot of miles on it I'd change the tps anyway because they're known for causing a lot of strange issues.
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Old 03-28-2012, 01:10 PM
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Re: Throttle Position Sensor going bad

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Originally Posted by cheapjeep View Post
You think it would do it with or without cruise but if you have a lot of miles on it I'd change the tps anyway because they're known for causing a lot of strange issues.
That is exactly what I got from reading. Seems they don't crap out totally at once. Love them sensors boy.
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Old 03-28-2012, 03:58 PM
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Re: Throttle Position Sensor going bad

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Originally Posted by GrnBeltWarrior View Post
That is exactly what I got from reading. Seems they don't crap out totally at once. Love them sensors boy.
No, they don't just crap out, they make your jeep do all sorts of weird shtuff, like messing with cruise, screwing up tranny shift points, sometimes with others without check engine lights. (mine did all of this before I finally replaced it) Just replace the POS sensor, I got one at Advance Auto for $35 and its been fine for almost a year now. Takes about 20 min or less to replace with the right tools. 2 screws, 1 wire connector.
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Old 03-28-2012, 06:55 PM
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Re: Throttle Position Sensor going bad

Well the one I got made it all kinds of worse. Threw P0123 (TPS) and good thing I didn't try to drive more than a block away, would not shift or hold a steady rpm.

Put the old one back on, cleared the code. Back to before. I'm thinking/hoping the BWD part might be DOA.
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Old 03-28-2012, 07:53 PM
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Re: Throttle Position Sensor going bad

Heres a link to the part

http://shop.advanceautoparts.com/web...R%7CGRPSENSAMS
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Old 03-28-2012, 10:01 PM
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Quote:
Originally Posted by GrnBeltWarrior View Post
Well the one I got made it all kinds of worse. Threw P0123 (TPS) and good thing I didn't try to drive more than a block away, would not shift or hold a steady rpm.

Put the old one back on, cleared the code. Back to before. I'm thinking/hoping the BWD part might be DOA.
Probably just a bad part, I've had good luck with BWD before. What you first described with the code is what mine started doing when I finally replaced it.
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Old 03-30-2012, 01:44 PM
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Re: Throttle Position Sensor going bad

The problem appeared from no where and now its not doing it anymore.
I really hate goofy problems. Found out today my bilstein shocks will be in Wednesday so I guess it evens out?
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Old 03-30-2012, 01:58 PM
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Re: Throttle Position Sensor going bad

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Originally Posted by GrnBeltWarrior View Post
The problem appeared from no where and now its not doing it anymore.
I really hate goofy problems. Found out today my bilstein shocks will be in Wednesday so I guess it evens out?
YAY! Bilstein shocks are one of my favorite mods, along with the addco sways.
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Old 04-02-2013, 03:45 PM
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Re: Throttle Position Sensor going bad

Do you think this could be my problem... Here is what my car is doing. It likes to drop rpms to 0 and shut off. Sometimes it'll crank right back up n sometimes it won't. Whenever it does it, the car sounds like it wants to crank. I've had my battery checked multiple times n that is not it. If you can help will you please email me at hayes_morgan1995@yahoo.com
Thank you soooo much!!!
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Old 04-02-2013, 04:50 PM
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Re: Throttle Position Sensor going bad

Welcome to the garage.
This seems more as a crank or cam sensor going bad. Did you check for any fault code using the key dance? ( ignition switch off/on 3 times and leave it in on at the third time. The odometer will show a fault code, or "DONE"when all ok. Could eventually be a dirty idle air control motor plunjer and air canal. This needs a throttle body cleaning.
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