Question about 1994 Toyota Pickup

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Replaced the tps on my 1993 toy pu now my engine is revving up and down?

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Did you adjust the TPS before installing? 22RE?
http://www.4crawler.com/4x4/CheapTricks/TPS/index.shtml

Posted on Jan 06, 2011

  • slerdwerds Apr 07, 2011

    how do u adjust the tps?

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1 Answer

Revving up and down


Faulty idle air control valve.After you replace it you will need to reset the computer by disconnecting the ground cable on the battery for 30 seconds then re-install it and start it up it should run fine.

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2004 intrepid replaced MAP sensor and cleared codes. about 100 miles later drove to work, 8hrs later started it and engine started intermittently revving at idle and in gear. had to keep heavy on throttle...


TPS wears in spots and can cause intermittent problems like you described. Try turning off the car and unpluging the TPS. Start the car and see if smooths out the idle/reving problem while the TPS is unplugged. If yes replace the TPS.

Aug 12, 2017 | 2004 Dodge Intrepid

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My engine revs and trys to take off while i am sitting still, the car would be in drive and my foot on the brake, It revs up and sometimes when i let off the break it surges forward then shuts down in...


The idling may be a loose connection to the "idle air control valve". if the control valve connection is secure, then it could also be a bad Throttle Positioning Sensor (TPS). To test the TPS, tap it with a screwdriver while the engine is self-revving, and see if the reving changes when tapped. if its not the TPS, then try cleaning the throttle body.

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Mar 26, 2011 | 2005 Ford Five Hundred

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Replacing TPS cant get it right car keeps revving up and down on 85 celica supra


Hi, if the problem is at idle, it may be caused by a clogged PCV system. The idle controller needs the PCV flow to maintain a steady idle. Remove the PCV valve and hose and clean them with carb cleaner until you can get a good flow thru the system. Please let me know if you have questions, and thanks for using FixYa.

Feb 22, 2011 | Toyota Supra Cars & Trucks

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Yesterday I replaced my Ign. module on my 1993 full size Chevy Blazer and drove it 80 miles to make sure it would run correctly and it did great as usual. Today I tried to get on the freeway and it coughed...


Testing an not guessing as to what the problem is the way to find the problem . A number of thing's on you vehicle could cause this . Engine management system sensor's - MAP , TPS etc.... Hooking up a scan tool that can view engine sensor data to diagnose the problem should be done by a qualified technician .

Dec 17, 2017 | 1993 Chevrolet S-10 Blazer

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Idle too high


have you tested the intake for vacuum leaks?

Aug 04, 2009 | 1993 Mercury Cougar

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2008 Hyundai Tiburon revving to 7500 rpm while stopped at a light. 5 speed tranny


Get ready to replace the TPS (throttle position sensor).

TPS will act up is it wet or

one of more wire(s) are ground to the frame/engine.

Disconnect,clean and reconnect the TPS sensor.
Disconnect the battery for 4 minutes then reconnect.
Let the computer ECU re-learn the value of the resistance reading.


Is you throttle tension OK when it happen.

Lose throttle cable can also cause the same problem.


Jul 18, 2009 | Hyundai Motor 1990 Sonata

1 Answer

1993 ford explorer as soon i start car,on park and nutral engine


This vehicle should be storing a code, take the truck to the advance auto parts store or auto zone and ask to have them hook up a code reader to it this should give you at least a general idea of where to check or replace parts. If the truck is not storing a code I would say it is either the MAF (mass air flow ) sensor or the throttle positioning sensor, but usually when the TPS (throttle position sensor) acts up you will hear a surge in the rpm's, in other words the engine speed will tend to go up then come down go up come down etc.

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