Ford Ranger Forum - Forums for Ford Ranger enthusiasts!

Go Back   Ford Ranger Forum - Forums for Ford Ranger enthusiasts! > >
Forgot Password? Join Us!

Welcome to Ford Ranger Forum

Thread Tools Search this Thread

Old 10-17-2009, 02:26 PM
Jbaugh75 Jbaugh75 is offline
Learning to use the forums
Join Date: Oct 2009
Posts: 2
Default Throttle Position Sensor Failure

Hi, First time here and am going absolutely insane

Took my 2000 2.5l Ranger to get inspected and failed to a t/p sensor code. Changed out the sensor and the check engine light came on again after driving 10 miles. Thinking it could be a bad part, switched it one more time and got to drive it 20 miles before the light turned on again.

Sooooo, I then changed out the connector and still..."Check Engine" Anyone have any ideas or suggestions? I wish i had the extra cash to just take it to a mechanic but i already received 2 citations from 2 different cities for this and i won't be able to afford it.
Reply With Quote
Old 10-17-2009, 06:02 PM
02'4.04x4 02'4.04x4 is offline
Ford Ranger Driver
Join Date: Aug 2009
Posts: 634

Not sure what to tell you other than a wire short the TPS is merely an on off switch that tells the computer to control the engine for idling. If it is failing then it means that the signal for the computer to do what it does is not hitting right. You can try and clean out the intake really well it is possible that if it is not telling it to control the idle it is because debris/build up may be preventing it from resting all the way. Typically there is an adjustment screw that stops the accelerator pulley at a certain point if someone goofed around with it for some reason. Well you should understand.

TPS function - rest, light click, WOT, light click, rest.

If you push the throttle plate open with the engine off carefully listen to see if you hear the light click just before it hits the rest position. G/L

Let us know.
Current Mods
White gauges and Temp Cntrl, OHCw/Buggman LED mod,
Bosch +4, Accel Coil Pack, MSD6AL, Walbro, HiFlo Fuel filter,
Custom Ram Air, K&N, Ported / Matched intake, JBA 9mm wires,
Tweeked FPR, EBC 6k's, DynoMax-S CatBack, Jet-Chip, Reflex shocks,
New Anvil Mounts, Timbren's, Optima Yellow, DB 220A Alt. w/4g. jumper,
Western snow plow, More2Come

Last edited by 02'4.04x4; 10-17-2009 at 10:47 PM.
Reply With Quote
Old 10-17-2009, 09:21 PM
Jbaugh75 Jbaugh75 is offline
Learning to use the forums
Join Date: Oct 2009
Posts: 2

Thanks for the reply and advice. I will give that a try tomorrow and let you know how it turns out. I can only hope that it ends up being that simple, we'll see. Thanks again!
Reply With Quote
Old 01-05-2010, 09:58 PM
Pro Induction Pro Induction is offline
Learning to use the forums
Join Date: Jan 2010
Posts: 10

I had the same thing happen to my 99 2.5 and after spendin all the money it ended up being a wire loose going to the TPS
Reply With Quote
Old 01-06-2010, 06:48 PM
98blownranger 98blownranger is offline
Custom KeyChain R Me
Join Date: Feb 2009
Posts: 718

I always set the tps voltage....48-.52V at idle?? and 1V at WOT key on engine off

there are other ways to do it also. I adjust the voltage by rotating it untill the volts work out, you may have to drill the mount holes a little larger to get it
Originally Posted by redrumedge View Post
98blown you should be an MD! that's the same stuff my doc asks and ur spot on man!!!
98 4.0 2wd-----supercharger fully build heads cam...all show with go......3 time world of wheels champ 5 time national winner

lots of ranger parts for sale leftovers from my 94/96
96 sitting on the frame, waiting to go lower

custom billet parts by me intake adapters and billet steps for the step sides

please sign my guestbook!!
Reply With Quote
Old 06-07-2011, 04:56 AM
fmallardjr fmallardjr is offline
Learning to use the forums
Join Date: Oct 2010
Posts: 2
Default Re: Throttle Position Sensor Failure

Hi there...I've got a 2000 Ford Ranger 3.0 V6 Flex. I've found that it doesn't like Autolite spark plugs. The truck will jerk as if it is going in and out of overdrive. What's happening is, the AutoLite plugs (AP103) are not firing as hot as they should, creating a slight miss in the engine, not enough to be picked up by the ECM, thus no check engine warning light. If you've changed your plugs and replaced them with AP103 AutoLite and experience this you need to use the Motorcraft plug AGFS22FM (SP500). I replaced the AutoLite plugs and the truck is running like a new one. Hope this will help someone.

Last edited by fmallardjr; 06-10-2011 at 07:34 AM.
Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Throttle cable mod bigtoys2004 4-Cylinder Tech 34 01-19-2014 11:04 PM
1996 Ranger crankshaft position sensor vang0017 4.0 SOHC / 4.0 OHV Tech 5 06-07-2011 06:59 PM
Throttle body spacer RangerLuc General Ford Ranger Discussion 10 10-03-2009 11:35 AM
Cam Position Sensor/CEL Nightmare beat_1998_2.5l 4-Cylinder Tech 0 07-28-2009 07:54 AM
Throttle body coating? Steve Fors 3.0 Vulcan Tech 1 03-14-2009 04:03 PM