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

17,600

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

46,385

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!

46,385

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 212,656 nationwide F-150 listings starting at $1,000.

ZIP:

Search Ford F-150 Questions

Ford F-150 Experts

#1 OJ
OJ
Reputation 6,910
#2 dandyoun
dandyoun
Reputation 4,180
#3 tennisshoes
tennisshoes
Reputation 2,510
View All

Related Models For Sale

Used Chevrolet Silverado 1500
2,307 Great Deals out of 156,238 listings starting at $1,395
Used GMC Sierra 1500
930 Great Deals out of 62,271 listings starting at $1,395
Used Dodge Ram 1500
537 Great Deals out of 12,998 listings starting at $2,199
Used Ford F-250 Super Duty
427 Great Deals out of 45,049 listings starting at $2,000
Used Toyota Tundra
624 Great Deals out of 30,697 listings starting at $2,637
Used Toyota Tacoma
625 Great Deals out of 35,082 listings starting at $2,155
Used Ford Mustang
398 Great Deals out of 44,403 listings starting at $1,000
Used Nissan Titan
235 Great Deals out of 16,972 listings starting at $3,999
Used Ford Explorer
1,001 Great Deals out of 73,800 listings starting at $750
Used Chevrolet Tahoe
807 Great Deals out of 28,674 listings starting at $1,500
Used Ford Ranger
208 Great Deals out of 6,719 listings starting at $1,450
Used Chevrolet Colorado
278 Great Deals out of 19,365 listings starting at $1,995
Used Jeep Wrangler
442 Great Deals out of 19,188 listings starting at $2,994

Used Cars For Sale

2017 Ford F-150 For Sale
3 Great Deals out of 100,942 listings starting at $18,940
2016 Ford F-150 For Sale
197 Great Deals out of 43,534 listings starting at $16,995
2015 Ford F-150 For Sale
199 Great Deals out of 7,337 listings starting at $17,480
2014 Ford F-150 For Sale
461 Great Deals out of 11,869 listings starting at $10,700