Runs fine in Park and Neutral. Runs so poorly it cannot move itself in D and R.

40

Asked by Apr 04, 2015 at 05:14 PM about the Ford F-150

Question type: Maintenance & Repair

2001 5.4 Ford F150 was running fine and then suddenly became undrivable. In park and neutral, truck runs normally. Starts right up, idles smoothly and pressing the accelerator will result in the engine smoothly running faster, RPM can go all the way up the safe range. In gear, things are very different. Truck runs so poorly that it cannot move under its own power. No codes in computer, according to a shop I towed the truck to. Check Engine Light is on. Overdrive Off light blinks constantly and clicking Overdrive button on gearshift knob does nothing. Checked fuel as it comes out of fuel filter because some people suggested that it might be fuel starvation but fuel flow out of the filter seems ok. Sprayed starter fluid in air intake and truck ran good enough to move while starter fluid was being applied which makes it seem like fuel starvation again. Once the starter fluid was consumed truck returned to running too poorly to move itself again.

Any ideas why and how I can fix the problem?

3 Answers

285,625

Your problem is not fuel related. I know it's transmission related due to the fact that the O/D light blinks because the trans is overheating and or has a stored fault code. It might be as simple as a trans shift solenoid went bad locking up the torque convertor at idle, or something in the trans went south. Have it looked at by a reputable trans shop in your area for a correct diagnosis.

40

Thanks for the quick response. How sure are you that this is a transmission issue? Are you basing this entirely on the Overdrive Low light? In support of your suggestion is the fact that the shop I took it to said that there was a transmission code read out of the computer but they made a point in insisting that it was unrelated to the problem.

40

And also, any idea why spritzing starter fluid down the truck's air intake gave it the ability to move under its own power again?

1 people found this helpful.

Your Answer

F-150

Looking for a Used F-150 in your area?

CarGurus has 215,477 nationwide F-150 listings starting at $1,300.

ZIP:

Ford F-150 Experts

  • #1
    OJ
    Reputation
    10,220
  • #2
    dandyoun
    Reputation
    4,830
  • #3
    tennisshoes
    Reputation
    3,660
View All

Related Models For Sale

Used Chevrolet Silverado 1500
1,781 Great Deals out of 149,286 listings starting at $1,495
Used GMC Sierra 1500
722 Great Deals out of 58,462 listings starting at $1,900
Used Ford F-250 Super Duty
374 Great Deals out of 42,218 listings starting at $1,600
Used Toyota Tundra
478 Great Deals out of 38,526 listings starting at $1,999
Used Dodge Ram 1500
316 Great Deals out of 9,549 listings starting at $800
Used Ram 1500
901 Great Deals out of 119,059 listings starting at $5,995
Used Toyota Tacoma
439 Great Deals out of 44,078 listings starting at $1,995
Used Ford Mustang
270 Great Deals out of 37,082 listings starting at $2,150
Used Ford F-250
401 listings starting at $2,300
Used Chevrolet Colorado
295 Great Deals out of 41,682 listings starting at $1,900
Used Ford F-350 Super Duty
431 Great Deals out of 24,311 listings starting at $3,900
Used Nissan Titan
254 Great Deals out of 22,941 listings starting at $1,995
Used Ford Explorer
801 Great Deals out of 64,315 listings starting at $1,000
Used Chevrolet Silverado 2500HD
361 Great Deals out of 29,859 listings starting at $2,500
Used Chevrolet Tahoe
528 Great Deals out of 36,655 listings starting at $1,375

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.