2003 F150 Trouble starting

Asked by Nov 09, 2016 at 08:29 PM about the 2003 Ford F-150 XL Extended Cab 4WD SB

Question type: Maintenance & Repair

My 2003 F150 4.6L has been having trouble
starting the past couple weeks. It cranks nice and
hard and usually starts but every once in a while it
takes a couple tries (only in the mornings or after
it's been sitting for a while). Once I get it started, I
can turn it off and it will fire right back up. Fuel
pump and filter were replaced in May, timing
chains were also replaced in May (timing chain
guards broke and caused the chain to jump). Any
ideas what could cause this? I don't want it to get
worse and leave me stranded.

4 Answers

17,290

Replace air filter and clean throttle body with throttle body cleaner and add fuel injector cleaner to gas tank.

40,465

My guess is that your fuel pump is getting ready to die. I own a 2002 F150 and I am basing this advice on my experience. One thing you can try is banging on the bottom of the tank with the key on, if you hear the fuel pump start up then it is time for a new one!

40,465

Since you replace the pump recently I would check the electrical connection.

Thanks. I'll clean the air filter, MAF and TBS and post an update in the next couple weeks.

Your Answer

Add photo

Related Questions

  • 2003 4.6L f150 fuel problems 7 answers

    Hey, guys new to this site, having fuel problems with a 2003 F150, been a good for Truck for 147,500 mile, until it stopped. Replace fuel pump, wrong!! Problem, contacts on both fuel and pcm relay c...

    2003 Ford F-150 XLT Extended Cab SB

    -

    Maintenance & Repair

  • 2003 F150, has trouble starting and battery and headlights along with speed odometer and radio will cut off whats wrong? 3 answers

    The truck seems to have its own agenda. sometimes it fires right up and sometimes it just ticks. While i am driving the trucks egine is fine, looses alittle power but the dash lights up and the sp...

    2003 Ford F-150 XL 4WD LB

    -

    Maintenance & Repair

  • HELP! I have a 2003 Ford f150. I turn my lights on and have nothing in the back! 23 answers

    HELP! I have a 2003 Ford f150. I turn my lights on and have nothing in the back! Driver side is totally dead except reverse light. Drivert side has NO parking lights, blinker, or brake but the rever...

    2003 Ford F-150 XL Extended Cab 4WD LB

    -

    Maintenance & Repair

  • Trouble starting F150...NEED ADVICE/HELP! :P 3 answers

    I have an '87 F150 Str8 6 engine, & it has trouble starting after letting it sit after 10min. It starts right back up the minute u shut it off, or when it sits for a day..So far, I've given it a tune ...

    1987 Ford F-150

    -

    Maintenance & Repair

  • 2013, F150 starting trouble 2 answers

    Truck F150 Lariat, 2013, 53 thousand miles, crank but will not start, fuel pump fuze okey, sprayed carburetors cleaner in the intake and start but stop in a few seconds"

    2013 Ford F-150 Lariat SuperCrew

    -

    General

F-150

Looking for a Used F-150 in your area?

CarGurus has 207,247 nationwide F-150 listings starting at $1,990.

ZIP:

Search Ford F-150 Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Ford F-150 Experts

#1 OJ
OJ
Reputation 6,700
#2 dandyoun
dandyoun
Reputation 4,130
#3 tennisshoes
tennisshoes
Reputation 2,470
View All

Related Models For Sale

Used Chevrolet Silverado 1500
2,580 Great Deals out of 151,095 listings starting at $1,500
Used GMC Sierra 1500
1,020 Great Deals out of 59,972 listings starting at $1,299
Used Dodge Ram 1500
531 Great Deals out of 13,026 listings starting at $1,800
Used Ford F-250 Super Duty
442 Great Deals out of 42,874 listings starting at $2,750
Used Toyota Tundra
673 Great Deals out of 27,892 listings starting at $2,500
Used Toyota Tacoma
713 Great Deals out of 31,628 listings starting at $2,750
Used Ford Mustang
549 Great Deals out of 42,538 listings starting at $1,699
Used Ford Explorer
1,117 Great Deals out of 71,346 listings starting at $799
Used Nissan Titan
249 Great Deals out of 15,756 listings starting at $3,900
Used Chevrolet Tahoe
862 Great Deals out of 27,925 listings starting at $1,700
Used Ford Ranger
212 Great Deals out of 6,816 listings starting at $1,595
Used Chevrolet Colorado
308 Great Deals out of 17,667 listings starting at $1,995
Used Ford F-350 Super Duty
445 Great Deals out of 26,087 listings starting at $2,999

Used Cars For Sale

2017 Ford F-150 For Sale
80,181 listings starting at $10,516
2016 Ford F-150 For Sale
183 Great Deals out of 58,768 listings starting at $18,360
2015 Ford F-150 For Sale
211 Great Deals out of 7,440 listings starting at $18,891
2014 Ford F-150 For Sale
508 Great Deals out of 11,332 listings starting at $12,457
2013 Ford F-150 For Sale
657 Great Deals out of 13,972 listings starting at $8,450