Why will my 2005 Ford F-150 4.2L not accelerate

Asked by Oct 29, 2017 at 11:25 AM about the 2005 Ford F-150

Question type: Maintenance & Repair

I was driving my truck the other day. I was going about 45mph. As I drove, the
truck began to slow down to 5-10mph and shake (even though I was pressing
the gas pedal to accelerate). I stopped, and cut the truck off. 5 minutes later I
started the truck and could accelerate and drive like normal. I made it about a
mile before the same thing happened.
Problem Symptoms:
-Inability to accelerate
-Shaking
Important Info:
-Fresh spark plugs and wires about 1-2 years ago
-New alternator and battery 2 years ago
-fresh oil and oil filter
-It did NOT overheat
-It did NOT cut off on its own (still running until I turned it off)
-All power was working (cab lights, etc)
-RPMs did not increase when I attempted to accelerate (gas pedal to the floor)
-Truck would still run, but only go at 5-15mph
-LOW FUEL light was on, but I knew I had ~20 miles left
-CHECK ENGINE light did come on during the second time

1 Answer

79,495

Running today's vehicles around with the low fuel light on is a real bad idea. Low fuel level at the fuel pump can cause it to overheat and destroy it. Put some fresh fuel in it and try it again. If it still doesn't run correctly have the fuel pressure checked. A new fuel pump may be in your future.

Your Answer:

Ford F-150 Experts

  • #1
    OJ
    Reputation
    14,150
  • #2
    dandyoun
    Reputation
    5,570
  • #3
    tennisshoes
    Reputation
    4,830
View All

Related Models For Sale

Used Chevrolet Silverado 1500
3,493 Great Deals out of 170,429 listings starting at $1,475
Used GMC Sierra 1500
1,412 Great Deals out of 62,955 listings starting at $1,100
Used Ford F-250 Super Duty
747 Great Deals out of 49,716 listings starting at $1,500
Used Toyota Tundra
843 Great Deals out of 36,127 listings starting at $2,171
Used Dodge Ram 1500
314 Great Deals out of 8,499 listings starting at $1,600
Used Toyota Tacoma
811 Great Deals out of 49,496 listings starting at $1,600
Used Ford Mustang
637 Great Deals out of 39,244 listings starting at $1,395
Used Ford Ranger
141 Great Deals out of 5,779 listings starting at $1,200
Used Nissan Titan
413 Great Deals out of 23,801 listings starting at $1,299
Used Chevrolet Colorado
463 Great Deals out of 39,304 listings starting at $995
Used Ford Explorer
1,623 Great Deals out of 86,183 listings starting at $1,275
Used Ford F-350 Super Duty
494 Great Deals out of 22,010 listings starting at $3,249
Used Chevrolet Tahoe
1,011 Great Deals out of 39,032 listings starting at $950

Used Cars for Sale

2019 Ford F-150 For Sale
70,365 listings starting at $20,833
2018 Ford F-150 For Sale
369 Great Deals out of 74,180 listings starting at $17,745
2017 Ford F-150 For Sale
284 Great Deals out of 7,252 listings starting at $14,995
2016 Ford F-150 For Sale
660 Great Deals out of 13,387 listings starting at $11,995
2015 Ford F-150 For Sale
762 Great Deals out of 14,070 listings starting at $10,900

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. Content will be removed if CarGurus becomes aware that it violates our policies.