my 2003 ford explorer 4wd 4.0 when you start it, it will idle but when you push the gas peddle it will stall out everytime.


Asked by Feb 04, 2014 at 12:10 AM about the 2003 Ford Explorer XLT V6 4WD

Question type: Maintenance & Repair

when you start i, it will idle but it idles rough then when you push the gas peddle it stalls out everytime. today i changed the map sensor and the pronblem still exsists, i have also changed the egr valve, fuel pressure regulator, and the crank shaft sensor. i had to change the engine in it and when i did itr ran fine when i started it and drove it for about the first half hour and i was going up a slight slope and when i pushed the gas it had no power and stalled out almost as if it was out of gas. i went and bought gas and had to have it pulled back home. now everytime we start it, it idles rough then when i push the gas it dont move and quits.

4 Answers


i have changed the idle air control and it still stalls out when i push the throttle uner the hood also. could it be the furl pump i have tried almost everything. i bought it from a car lot last jan. and paid almost 5k for it and i've put another 5k in it. i just put the new motor in on sat. everything ran fine at first but after about a half hour i coudnt go anywhere. there was no power when you pushed the gas. then after we pulled it back home evrytime you start it, it will idle but it idles rough then when you push the throttle it dies. its like its getting to much air or not enough. or like its not getting the right amount of gas. today when we put the map sensor on we started it, it started right up but still idle rough and then when you push the throttle it died again. when we tried to start it back again you could smell the gas fumes like it was flooded. i have no idea what is wrong with it now. the only other thing i can think of is the fuel pump but it was like it happened instantly. it has me stumped at this point and ready tjo just junk it.....

8 out of 8 people think this is helpful.

OKAY....okay, we Know this is the Intake Air temperature sensor...because it's goin' RICH on us~ nsor&tbm=shop&spd=8659120339351293236

4 out of 4 people think this is helpful.
James Ramond

fuel pressure and volume check at fuel rail, also, first check the distributor for proper setting turn slightly while running or align by sight

2 out of 2 people think this is helpful.

If it runs good and always stalls when ther throttle is just opened quite often the TPS (throttle position sensor) developes a bad spot just off idle. Usually if this is the cause if you accelerate hard it will be past the bad spot and run but if you just touch the throttle it will stall. Worth checking out, It can be tested with a scope on the center wire(signal). It should sweep up and doun to 5 volts max when the throttle is opened and be around .75 to 1 volt at idle..

Your Answer

Add photo

Related Questions

  • Cost To Replace a 2002 Ford Explorer XLT Transmission 44 answers

    What should I expect to pay to have a transmission replaced in my Ford Explorer XLT 2002 vehicle - rebuilt or used?

    2002 Ford Explorer XLT 4WD


    Maintenance & Repair

  • Confuzzled!!! Truck dies randomly then wont start... spent 1500 trying to fix. 17 answers

    Truck drives fine one day, then stalls and won't restart the next day. We have replaced fuel pump (3x), fuel relay, vaper mang. valve, the SPORD sensor, O2, sensons, crankshaft sensor, battery, chec...

    2002 Ford Explorer Sport 4WD


    Maintenance & Repair

  • 2004 ford explorer 2 answers

    I have a 2004 ford explorer (4.0) liter engine. Almost everytime I drive for about 20 Min. and stop my coolnt reservoir fills up and starts leaking out the top, and the hose going to the thermostat ...

    2004 Ford Explorer XLT V6


    Maintenance & Repair

  • Transmission Whining 5 answers

    I have a 1996 Explorer XLT with 185k miles on it. My problem started out as a sound only about three weeks ago – it sounded like a high-speed drill was turning on under my truck while I was driving. ...

    1996 Ford Explorer 4 Dr XLT 4WD SUV


    Maintenance & Repair

  • What does the 4x4 AUTO button do? 28 answers

    I recently purchased a 2008 Ford Explorer XLT 4WD. When I push the 4x4 HIGH button, a 4x4 light comes on the dashboard. Likewise, when I push the 4x4 LOW button, a 4x4 and LOW light comes on. When I p...

    2008 Ford Explorer XLT 4WD




Looking for a Used Explorer in your area?

CarGurus has 71,675 nationwide Explorer listings starting at $300.


Search Ford Explorer Questions

Ford Explorer Experts

#1 OJ
Reputation 8,460
#2 Tom Demyan
Tom Demyan
Reputation 3,360
#3 tennisshoes
Reputation 1,930
View All

Related Models For Sale

Used Ford Expedition"
570 Great Deals out of 21,490 listings starting at $2,111
Used Jeep Grand Cherokee"
1,169 Great Deals out of 73,673 listings starting at $1,500
Used Ford F-150"
3,181 Great Deals out of 216,384 listings starting at $1,900
Used Chevrolet Tahoe"
1,057 Great Deals out of 36,219 listings starting at $1,700
Used Ford Escape"
1,675 Great Deals out of 94,359 listings starting at $500
Used Dodge Durango"
389 Great Deals out of 22,636 listings starting at $1,700
Used Toyota 4Runner"
356 Great Deals out of 18,763 listings starting at $2,400
Used Honda Pilot"
557 Great Deals out of 19,322 listings starting at $1,800
Used Toyota Highlander"
641 Great Deals out of 30,514 listings starting at $1,990
Used Ford Explorer Sport Trac"
71 Great Deals out of 2,235 listings starting at $1,995
Used Nissan Pathfinder"
438 Great Deals out of 25,012 listings starting at $1,500
Used Ford Explorer Sport"
323 listings starting at $995

Used Cars For Sale

2017 Ford Explorer For Sale
6 Great Deals out of 34,988 listings starting at $23,660
2016 Ford Explorer For Sale
256 Great Deals out of 10,680 listings starting at $23,220
2015 Ford Explorer For Sale
149 Great Deals out of 3,308 listings starting at $12,995
2014 Ford Explorer For Sale
312 Great Deals out of 5,606 listings starting at $9,999
2013 Ford Explorer For Sale
324 Great Deals out of 5,385 listings starting at $9,300