Question about 2001 Ford Explorer

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2001 Ford Explorer Sport Throttle Position Sensor

The check engine light was on for a few months on my 2001 Ford Explorer Sport. I finally located and repaired a vacuum leak but now I think the TPS is bad. Using the Haynes test recommendations, it should read from 1v with the throttle closed to 5v with the throttle open. It stays at 5v throughout. I replaced the TPS but the new one gives the same readings. Note that prior to locating the vacuum leak, I checked the TPS and it tested within specs.

Is there another way to test the TPS? Did I just get a defective new one? Is the TPS good but possibly the Power Control Module (PCM) bad?

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  • dougb134 Oct 07, 2008

    I too have the same problem. After warms up, the engine is at 2000 rpms then when fully braked, will drop down to 1000 rpms. I took it to AutoZone and checked error code because after I replaced the TPS, I got the check engine light. There are two different TPS sensors for this model and I had gotten the wrong one. That still did not fix my problem so, the guy brought out a IAC motor and that did not fix it either. Needless to say, I made an appointment this morning with Ford

  • dbellis Dec 04, 2008

    tps out of range code keeps coming up after I changed tps

  • Ismael Ricardo Chvez Mendoza

    Is very easy, you need to buy and replace the tps, it is not expensive.


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I have a problem with my truck it runs fine but when i put it in drive or reverse it blogs out for a second but when iam doing 23/30/40/50 what ever its fine...

Posted on Feb 25, 2010

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The Ford company replaced the thermostat and the IAC motor. It fixed my the problem.

Posted on Dec 30, 2008

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Hi , i have the same problem , and i fix it i just change my intake gsket

Posted on Dec 30, 2008

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Hi, Take a little time to check all earth mounts,There are some fine earthwires under the looms running from air intake if one of these is broken or dirty it can cause all the symptoms you describe. All the best. Phil

Posted on Sep 11, 2008

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1 Answer

O?D light flashing on 1998 ford explorer saying it is off. when you try to drive it the overdrive goes in and out.

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2001 Ford Explorer Sport, how to recalibrate throttle/pedal position sensor

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If the tps tests ok, the relearn procedure is simple. Disconnect the battery for 30 minutes or so. Reconnect the terminal and start the engine. Just let it sit there idling for 10 to 15 minutes. Then turn the A/c to max cool on high fan for a minute or two. Drive around and see how it does. You can turn the ac off or not. The end.

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Where is the throttle position sensor on 2003 Ford sport trac

The throttle position sensor is located in the throttle body right off to the side!

Mar 17, 2015 | 2003 Ford Explorer

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How to fix uneven engine performance when press gas pedal, on parking.and engine reach 3000+ rpm's engine start to sort of choke with uneven acceleration.

ok, sounds like you covered the basics with spark. I would check in this order; 1-Throttle position sensor, sometimes it wears out and you get poor signal back to computer, 2-clean MAF sensor, 3-check/clean IAT (intake air sensor). If this still doesn't help then I would check your fuel flow....but i'm thinking its your tps. Two screws will change that out quickly.

Jan 21, 2015 | 2001 Ford Explorer Sport

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What would cause my 2002 ford explorer xls to idle rough

What engine do you have? is check engine light on? You said you changed coil pack, but what about spark plugs? could be fouled by normal wear, improper application/plug gap, oil fouling (oil residue on electrode) caused by bad valve guide seals or bad piston rings or gas fouling(electrode wet with gas) caused by bad plug, wire, injector, O-2 sensor. Could be caused by a vacuum leak (hose or intake manifold/gasket) Check all vacuum hoses for cracking/chaffing, repair as needed. with engine idling spray carburetor cleaner at base of intake manifold watch for rpm increase if so there is a vacuum leak. Could be stuck open egr valve, Could be compression problem or timing chain problem. This is the best I can do with info you provided. Hope it helps.

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1 Answer

I have a 2005 Ford explorer xlt sport and it won't start.It ran fine until one night I put gas in,parked it,got up the next morning and it wouldn't start.It acts like it wants to,but won't.So far we have...

Test the injectors for power going to them. Check fuel pump pressure as you may need to adjust. Finally, a whiff of starting fluid may let engine run for a few seconds indicating it really Is a fuel issue.
You have both a fuel pump relay and an ECC relay in the Powerbox.
If this is a Double Overhead Cam V-8, the are parts called "Cam Phasers" which can stick and throw off timing.
"Cold Start Sequence" This is a enrichment function which is controlled by water temperature. A bad temperature sensor can eliminate this process. The fuel mix is set rich and the cam timing is changed to promote easier starts.
Most of the items I mentioned will not throw a diagnostic Code. You did not indicate whether a Code was set. The throttle position sensor can be checked by disconnecting the electric lead and using an Ohmmeter on the part while you move the throttle. The Ohms should change smoothly.
Would like to know what you find.

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2 Answers

2001 ford explorer sport will start but won't idle

Most likely there is a vacuum leak somewhere, check all small hoses and plastic "T" fittings for cracks or breaks, could be a vacuum line to the heater control, power brake booster also, listen for hissing noise @ startup. Happy hunting.

Nov 27, 2012 | Cars & Trucks

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2001 ford explorer have a gas leak which when turn on it start leaking

means that when power is on the fuel pump is sending fuel to the engine. since is by the transmission side then you have to check either is from any joint,hose or fuel filter.

Sep 28, 2012 | 2001 Ford Explorer Sport

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My ford explorer sport trac 2001 shows codes 455 and 457, check engine on

P0455 most likely means one or more of the following has happened:
A loose or improperly affixed gas cap
A non-conforming gas cap (i.e. not factory/original brand)
Other leak or damaged piece in EVAP system

Possible Solutions:
With a P0455, the most common repair is to:
Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back.
Otherwise, replace the gas cap, and/or Inspect the EVAP system for cuts/holes in tubes/hoses (you may hear a vacuum noise or smell fuel), repair if necessary.

P0457 can set by itself if the gas cap is left loose. when the engine controller sees a large increase in fuel level it knows you put some in the tank, and it runs the evaporative emissions system test to see if the system is sealed. If it sees a large leak it knows the cap was left off and sets the P0457. If you are positive the cap wasn't left even a little bit loose you may have a leak back there. It could be in the filler neck, from the tank to the evaporative emissions canisters, and from there on up to the purge solenoid. If you don't see any leaks you probably have a bad NVLD, the unit that checks the system for leaks.

Sep 16, 2012 | 2001 Ford Explorer Sport Trac

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