2003 ford f150 cranks but no start,

Asked by Nov 07, 2017 at 11:05 AM about the 2003 Ford F-150

Question type: Maintenance & Repair

I have a 2003 ford f150 with a v6 4.2l. my issue is that it wont start. I can spray starter fluid into the intake manifold and it fires right up. I have replaced the Fuel filter checked the fuel lines for pressure (good) I have a spark(as ive said car runs beautifully when starter fluid is used fires right up)occasionally starts on its own. had the dealership do a diagnostic and couldn't find the cause no check engine light no code. im stumped I love my truck its beauty and brawn, but im stumped does anyone have a likely cause or a list of things I should start replacing

3 Answers

10

ok lets see it fires right up when you spray the starting fluid. so that means you are getting fire to the plugs. and you got air flow to the engine. and your fuel pressure shows good. the only thing I can think would be your issue would be to check your fuses and see if there is a fuse for the fuel injectors maybe they are just not spraying fuel in to the engine. and if there isn't a fuse take a multimeter and check the connections to them and see it they are getting any signal pulses and if so your sprayers may have crapped out but they aren't that big of a problem to replace

127,135

Did the dealer do a live data scan? This really sounds like a sensor misread, no check engine light cause the computer sees the sensor as functional even though the readings are off. Find a shop that can do live data scanning or if you have a scanner that does it, look for a sensor reading that does not correspond with outside temps, engine temps, air charge temps or even out range readings. Computer and sensor grounds should also be checked, cleaned or repaired as needed.

the dealer did do a live data scan no faults or codes were found in the last few days itll start occasionally on its own but sometimes still refuses and I have to use starter fluid to get it going once running it runs amazingly no change in gas mileage. with no fault no code im having a hard time isolating the issue especially since sometimes its really bad and sometimes really good (in reference to starting)

Your Answer:

F-150

Looking for a Used F-150 in your area?

CarGurus has 193,442 nationwide F-150 listings starting at $1,000.

ZIP:

Ford F-150 Experts

  • #1
    OJ
    Reputation
    12,230
  • #2
    dandyoun
    Reputation
    5,200
  • #3
    tennisshoes
    Reputation
    4,180
View All

Related Models For Sale

Used Chevrolet Silverado 1500
1,935 Great Deals out of 168,316 listings starting at $1,600
Used GMC Sierra 1500
714 Great Deals out of 62,406 listings starting at $2,195
Used Ford F-250 Super Duty
504 Great Deals out of 41,783 listings starting at $1,897
Used Toyota Tundra
641 Great Deals out of 35,808 listings starting at $2,495
Used Dodge Ram 1500
304 Great Deals out of 8,797 listings starting at $1,495
Used Toyota Tacoma
568 Great Deals out of 49,204 listings starting at $2,500
Used Ford Mustang
525 Great Deals out of 39,031 listings starting at $1,200
Used Ford F-350 Super Duty
345 Great Deals out of 20,670 listings starting at $2,995
Used Chevrolet Colorado
313 Great Deals out of 38,433 listings starting at $1,494
Used Nissan Titan
265 Great Deals out of 21,280 listings starting at $1,995
Used Chevrolet Silverado 2500HD
337 Great Deals out of 27,166 listings starting at $2,500
Used Ford Explorer
1,248 Great Deals out of 83,884 listings starting at $1,000
Used Chevrolet Tahoe
676 Great Deals out of 38,236 listings starting at $1,199

Used Cars for Sale

2019 Ford F-150 For Sale
705 listings starting at $27,058
2018 Ford F-150 For Sale
158 Great Deals out of 116,444 listings starting at $17,134
2017 Ford F-150 For Sale
172 Great Deals out of 6,835 listings starting at $16,970
2016 Ford F-150 For Sale
362 Great Deals out of 12,210 listings starting at $14,500
2015 Ford F-150 For Sale
436 Great Deals out of 14,150 listings starting at $12,300

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.