Question about 1993 Ford Taurus

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Engine idles fine but hesatates to rev. I've changed the TPS witch is nonajustable what do you think?

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  • Ford Master
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Check spark plugs,check fuel & air filters

Posted on Sep 23, 2009

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I have a 1992 ford tarus it idles fast and will not rev up I have changed fuel pump and filters and also changed plugs and wires when you give the car gas it rev and go back to idle even with gas peddel on...


TPS.....Throttle Position Sensor will normally cause this problem.....IAC....Idle Air Control sensor will also have an effect on the idling.....However I would say it is the TPS....IT is rare that both have failed but it is possible.......You should have a check engine light on...?...

Feb 01, 2015 | 1992 Ford Taurus

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2007 Hyundai Accent revs up in idle. Normal?


Ask your Mechanic it sound like the TPS could be going bad.

Aug 18, 2013 | Cars & Trucks

1 Answer

My Toyota Quantum 2.7GL idles but does not rev up. i ve changed the fuel pump and filter but still it starts, idles but does not rev up when you press the accelerator?


We do not have this model in US, but I assume it is a new model 2016-17. You throttle (and the "rev" ) is controlled by the computer. The fact that your car is idles - should mean that your computer is fine! There are two types of idle control: 1st- when you have a bypass of the throttle, which lets the throttle flop stay close while idling and let's the air into the motor through a bypass and electronically controlled idle switch. Inspect your throttle - the electronic/metal unit located on the large pipe through which the air gets into the motor: if you have a "bypass" for the air then you need to inspect your throttle body as it could be your problem.
2. most likely you do not have a bypass and your idle is controlled by your throttle body, then it is sure working fine and your only issue is that your engine computer does not know that you press the accelerator. Your gas pedal has an electrical unit on it which connects to the engine computer- inspect the connector/wires if all looks fine most likely your accelerator sensor does not work- you need to change the gas pedal unit ( I think it called accelerator sensor).
Good luck.

Jan 05, 2013 | 2007 Toyota Quantum 2.7

1 Answer

Fast idle land rover discovery


I had the same problem on my 96 Discovery. It turns out, if the low end of the new TPS reads even a little bit higher than the old TPS, then the engine will rev high. It can be reset at LR dealership to map the new TPS, or you can hog out the screw holes on the new TPS and turn it clockwise until it reads as low or lower than the old TPS, or you can try cleaning the old TPS and reinstalling it. I was able to fix it by rotating, but I also was able to read the TPS signal at the OBD2 diagnostic port.

Mar 14, 2012 | 1996 Land Rover Discovery

1 Answer

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

1 Answer

98 galant 2.4 engine speed uncontrollable after 1600 rpm


check automatic idle speed motor if equipped.

Jul 07, 2009 | 1998 Mitsubishi Galant

1 Answer

Engine-no go


i think the dist is adjable try advanceing it some times the after market caps are a little diffront

Apr 06, 2009 | 1996 Ford Aspire

1 Answer

Timing at idle is more than 1000rpm


It appears the car may not be entering tuneup mode. warm up until temp is normal, idle stays below 1000 rpm
2000 rpm for 2 minutes
rev engine 2-3K three times
idle for one minute

turn off
disconnect tps
start
rev 2-3K three times
adjust timing

Oct 02, 2017 | 2004 Nissan Sentra

3 Answers

I have a 2000 malibu and it just cuts off while driving at about 50 to 70 mph.what could be wrong with it?


ok will it do it all the time or only once in a while. can you make it do it?
and when you say is cuts off. the engine dies and you have to restart it

Sep 10, 2008 | Chevrolet Malibu Cars & Trucks

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