2008 f 150, 5.4 turn key on and starter engages, truck will not start and starter to continues o run for about 45 seconds

Asked by Feb 27, 2015 at 07:45 AM about the 2008 Ford F-150 FX2 Sport SuperCrew SB

Question type: Maintenance & Repair

I'm getting fuel, getting spark. When I turn the key, the starter stays engaged and the
truck will not start. I removed the starter and bench tested it, it turns over and appears to
be working fine. Do the electronics of this truck prevent it from starting when its onboard
computer senses a problem with the starter solenoid? I do not have the tools to bench
test the solenoid output. What should I check/do?

1 Answer

17,930

With newer electronics on engines it could be just about anything. If you are sure you are getting spark to the plugs then move on to air. Is the filter clogged. Remove the filter and try to start. If it does not start that is not your problem. Test the fuel pressure on the fuel rail with the ignition on but engine not running. You'll need a tester for this. About fifty bucks for a decent one. Then you can move on the the TPS and the CPS.

Your Answer

Add photo

Related Questions

  • Starter continues to crank.. 12 answers

    I have a 1987 Ford F-150 351 engine. A few days ago it wouldn't start, so I replaced the solenoid. Two days later, after starting it, it continued to try to turn over, even though it started. I chec...

    1987 Ford F-150

    -

    Maintenance & Repair

  • Why won't my truck start? 78 answers

    My truck: 1995 Ford F-150 4.9 liter, 6-cylinder Manual transmission My truck will not start. When I turn the key, it only clicks. It does not turn over. This I know: Battery: Checked at NAPA and...

    1995 Ford F-150 XL SB

    -

    Maintenance & Repair

  • I turn the key forward and release the starter keeps turning but the engine does not crank. When it does crank I can drive a short distance and the engine will die 2 answers

    2010 Ford F150 FX4 when I turn the key forward and release the starter keeps turning but the engine does not crank. When it does crank I can drive a short distance and the engine will die and when I a...

    2010 Ford F-150 FX4 SuperCrew 4WD

    -

    Maintenance & Repair

  • why will my truck not start 34 answers

    I have a good battery, i have a solid connection with my starter solenoid (click, click) when i turn the key. i just changed my ignition switch, and my ignition key cylinder ( they needed to be change...

    1995 Ford F-150 XLT SB

    -

    Maintenance & Repair

  • when starting, it clicks, but starter won't spin. 5 answers

    If I jump the starter, motor will run as long as starter is engaged

    1995 Chevrolet Lumina 4 Dr LS Sedan

    -

    Maintenance & Repair

Search Ford F-150 Questions

Ford F-150 Experts

#1 OJ
OJ
Reputation 7,670
#2 dandyoun
dandyoun
Reputation 4,330
#3 tennisshoes
tennisshoes
Reputation 2,690
View All

Related Models For Sale

Used Chevrolet Silverado 1500
1,742 Great Deals out of 168,426 listings starting at $1,800
Used GMC Sierra 1500
809 Great Deals out of 66,570 listings starting at $1,995
Used Dodge Ram 1500
446 Great Deals out of 11,404 listings starting at $1,000
Used Ford F-250 Super Duty
343 Great Deals out of 47,460 listings starting at $1,795
Used Toyota Tundra
473 Great Deals out of 33,648 listings starting at $3,500
Used Toyota Tacoma
501 Great Deals out of 39,439 listings starting at $2,900
Used Ford Mustang
374 Great Deals out of 46,937 listings starting at $1,999
Used Nissan Titan
181 Great Deals out of 18,554 listings starting at $3,950
Used Chevrolet Colorado
226 Great Deals out of 23,565 listings starting at $2,200
Used Ford Explorer
811 Great Deals out of 74,599 listings starting at $750
Used Chevrolet Tahoe
569 Great Deals out of 27,371 listings starting at $1,500
Used Ford Ranger
197 Great Deals out of 6,002 listings starting at $1,500
Used Jeep Wrangler
275 Great Deals out of 18,633 listings starting at $2,995

Used Cars For Sale

2017 Ford F-150 For Sale
17 Great Deals out of 125,003 listings starting at $18,490
2016 Ford F-150 For Sale
128 Great Deals out of 22,088 listings starting at $18,897
2015 Ford F-150 For Sale
180 Great Deals out of 7,392 listings starting at $10,999
2014 Ford F-150 For Sale
363 Great Deals out of 12,369 listings starting at $7,995