my f350 sometimes starts and sometimes wont


Asked by lloyd1222 Dec 13, 2013 at 08:58 PM about the 2002 Ford F-350 Super Duty XLT Crew Cab LB

Question type: Maintenance & Repair

I have changed the fuel pump fuel filter and camshaft position sensor, I can drive it for a few days the all of a sudden drive somewhere turn the truck off go to start it and it wont start it has been doing this the last month and it is getting very frustrating I have  no idea what could be wrong

2 Answers

the main ground connection to the frame is corroded...rusty...a layer of semi-conductor has developed these 300 or so starts...combined with thermal cycling of day and night depends on where you park the truck...subject to morning dew? all these factors make it harder for the system ground to get through to the chassis....unbolt the connection between the 1/0 battery cable and the ground spot on the fender or frame...don't forget the one that goes to the engine block (near the alternator bracket) so we'll have good ground the delicate components that do not even use 50 milliamps to do their job...but are sensitive to varying voltages and available amperages....but we are gonna fix all that with a pliers and wirebrush~...also a NEW battery...the tin/antimony alloy batteries will only last five years~...mmmkay what is wrong is the reduced voltage has made the relays drop out....shuttin' you down proper~....fresh ground will fix ya~

6 people found this helpful.

fuel pump relay may not always connect, if you haven't done that already

4 people found this helpful.

Your Answer:

Ford F-350 Super Duty Experts

  • #1
    Bigbob Reece
  • #2
  • #3
View All

Find great deals from top-rated dealers


Related Models For Sale

Used Ford F-250 Super Duty
25 Great Deals out of 909 listings starting at $2,797
Used Ford F-450 Super Duty
3 Great Deals out of 103 listings starting at $14,900
Used Ford F-150
184 Great Deals out of 12,286 listings starting at $2,197
Used Dodge RAM 3500
54 listings starting at $12,911
Used Chevrolet Silverado 2500HD
22 Great Deals out of 1,803 listings starting at $3,495
Used Dodge RAM 2500
69 listings starting at $7,595
Used GMC Sierra 2500HD
27 Great Deals out of 1,705 listings starting at $5,994
Used Chevrolet Silverado 1500
111 Great Deals out of 10,257 listings starting at $3,655
Used Chevrolet Silverado 3500
9 listings starting at $5,999

Used Cars for Sale

2020 Ford F-350 Super Duty For Sale
539 listings starting at $48,549
2019 Ford F-350 Super Duty For Sale
664 listings starting at $2,797
2018 Ford F-350 Super Duty For Sale
6 Great Deals out of 74 listings starting at $38,649
2017 Ford F-350 Super Duty For Sale
4 Great Deals out of 119 listings starting at $36,995
2016 Ford F-350 Super Duty For Sale
96 listings starting at $33,990

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.