99 f350 super duty intermittent no start - Diesel Truck Forum - TheDieselGarage.com
Thread Details Posted by burkeftm, this thread has received 1 replies and been viewed 1054 times.

 
LinkBack Thread Tools Display Modes
post #1 of 2 (permalink) Old 09-22-2015, 05:07 PM Thread Starter
Member
 
Join Date: Dec 2008
Location: conshohocken,pa
Posts: 154
Points: 66,178
Thanks: 46
Thanked 50 Times in 40 Posts
99 f350 super duty intermittent no start

I need a little help.i have a 99 super duty 7.3 that one day last week cranked about 10 seconds longer than usual.most days spins over about 2 revolutions then starts.yesterday morning it did the same thing when I was leaving for work,I stopped on the way to work to get a coffee shut it off and when I came out it started normally,went to work ,truck sat 10 hrs .when leaving work would crank but not start,while cranking I could hear what is best described and a buzzing noise behind the dash.if cranking and buzzing the truck would not start as soon as buzzing stopped truck would fire.i shut off and restarted about three times all three times while buzzing present would not fire,as soon as buzz stopped fired right up.is there a ecm,or fuel pump relay behind the dash,if so how do I get to it ,remove radio?has this ever happened to anyone here before? Or am I chasing ghosts ,any help is appreciated thanks Bob
burkeftm is offline  
Sponsored Links
Advertisement
 
post #2 of 2 (permalink) Old 09-24-2015, 09:36 PM Thread Starter
Member
Threadstarter
 
Join Date: Dec 2008
Location: conshohocken,pa
Posts: 154
Points: 66,178
Thanks: 46
Thanked 50 Times in 40 Posts
Update swapped out relays behind dash,still had same problem .thinking low voltage at relay causing it to buzz.i cleaned and tightened battery cables,and load tested batteries all tested good,still same problem .then load tested battery cables found excessive voltage drop on positive cable,found corrosion under heat shrink .replaced cable now starts as it should every time.
burkeftm is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Diesel Truck Forum - TheDieselGarage.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
1999 Ford F350 7.3L Diesel Super Duty Crew Cab --Arizona jmbstudios Vehicles For Sale 0 06-23-2014 02:34 AM
94 7.3L Intermittent Start RanchTruck 1994-2003 7.3L Power Stroke 3 02-12-2011 09:12 PM
need fuse diagram 2005 f350 super duty Blown318 2003-2007 6.0L Power Stroke 1 01-06-2011 11:48 PM
start with gas or diesel super duty? slow00si Cummins in Fords 9 12-23-2010 01:40 AM
F350 Super Duty will crank but wont start! jpeters2 1994-2003 7.3L Power Stroke 4 03-17-2008 05:36 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome