my truck wont start or idle by itself


Asked by Mar 04, 2016 at 03:14 PM about the 2004 Ford F-150 Lariat Ext. Cab SB 4WD

Question type: Maintenance & Repair

i have a 2004 ford f150 5.4l lariat triton it turns over but wont start and if i
spray starter fluid in it ; it will start but i gotta stay on the gas it wont idle alone
but what i dont get is why wont it start and idle without the fluid

7 Answers


First you should check air filter and replace if necessary, change fuel filter if problem still persists get a fuel pressure test done.


Also add some fuel injector cleaner to gas tank will help clean dirty injectors if that is your problem.


Check fuel pressure at rail, ur not getting fuel


I bet you its the mass airflow sensor. Try unplugging it and starting, if it starts theres ur problem. Dont run it long unplug or it will foul your plugs


Its beats paying for a fuel pump, also replace fuel filter, may have restriction inside. Ofcoarse if it not the mass airflow sensor. My truck shut off while driving, thought fuel pump went out, but could hear if cycling for a few seconds. Turns out it was a 30 sensor... Good luck, 5.4 3v is the.worst engine ford has ever put out.. Im still having issues I can't figure out:/

1)Check fuel pressure, ok 2)X fuel filter,ok 3) X fuel pump!


You are giving it a super high octane shot with the fluid.ok now it is running.but you have to stay in to keep it.let's see you had to spray the carb/you have to stay in the truck to keep it running which is your foot helping tne carb.I wonder what is wrong. Carb carb carb carb carb

Your Answer


Looking for a Used F-150 in your area?

CarGurus has 220,358 nationwide F-150 listings starting at $1,222.


Ford F-150 Experts

  • #1
  • #2
  • #3
View All

Related Models For Sale

Used Chevrolet Silverado 1500
2,175 Great Deals out of 151,475 listings starting at $1,995
Used GMC Sierra 1500
877 Great Deals out of 59,609 listings starting at $1,980
Used Ford F-250 Super Duty
370 Great Deals out of 44,780 listings starting at $1,600
Used Toyota Tundra
558 Great Deals out of 37,746 listings starting at $1,500
Used Dodge Ram 1500
336 Great Deals out of 9,586 listings starting at $800
Used Toyota Tacoma
427 Great Deals out of 42,057 listings starting at $2,600
Used Ford Mustang
274 Great Deals out of 38,355 listings starting at $1,995
Used Ford F-350 Super Duty
414 Great Deals out of 25,417 listings starting at $3,900
Used Chevrolet Colorado
294 Great Deals out of 43,347 listings starting at $1,900
Used Nissan Titan
247 Great Deals out of 22,449 listings starting at $1,995
Used Chevrolet Silverado 2500HD
359 Great Deals out of 31,456 listings starting at $1,950
Used Ford Explorer
847 Great Deals out of 64,621 listings starting at $2,000
Used Chevrolet Tahoe
590 Great Deals out of 37,467 listings starting at $1,699

Used Cars For Sale

2018 Ford F-150 For Sale
42 Great Deals out of 140,782 listings starting at $19,500
2017 Ford F-150 For Sale
176 Great Deals out of 11,302 listings starting at $18,450
2016 Ford F-150 For Sale
192 Great Deals out of 8,257 listings starting at $14,500
2015 Ford F-150 For Sale
335 Great Deals out of 10,374 listings starting at $11,990
2014 Ford F-150 For Sale
531 Great Deals out of 12,861 listings starting at $8,991

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.