my f350 sometimes starts and sometimes wont

10

Asked by 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 then~...to 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~

1 out of 1 people think this is helpful.
19,515

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

3 out of 3 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Ford F-350 Super Duty Questions

Ford F-350 Super Duty Experts

#1 Bigbob Reece
Bigbob Reece
Reputation 2,430
#2 tikun
tikun
Reputation 1,270
#3 JoeAndJoe
JoeAndJoe
Reputation 1,070
View All

Related Models For Sale

Used Ford F-250 Super Duty
398 Great Deals out of 45,077 listings starting at $2,000
Used Ford F-450 Super Duty
35 Great Deals out of 2,689 listings starting at $8,975
Used Dodge Ram 3500
96 Great Deals out of 2,311 listings starting at $5,999
Used Ford F-150
2,690 Great Deals out of 212,354 listings starting at $1,000
Used Chevrolet Silverado 2500HD
325 Great Deals out of 25,709 listings starting at $2,500
Used Dodge Ram 2500
152 Great Deals out of 5,500 listings starting at $2,500
Used GMC Sierra 2500HD
137 Great Deals out of 13,468 listings starting at $2,997
Used Chevrolet Silverado 1500
2,290 Great Deals out of 155,163 listings starting at $1,395
Used Chevrolet Silverado 3500
21 Great Deals out of 620 listings starting at $6,495

Used Cars For Sale