truck shutting down - Diesel Forum -
General Diesel Discussion about diesels in general. All brands are welcome, please refrain from brand wars. Discussions about types of diesel fuel also go here.

LinkBack Thread Tools Display Modes
post #1 of 3 (permalink) Old 12-04-2010, 04:18 AM Thread Starter
Join Date: Oct 2010
Posts: 39
Feedback Score: 0 reviews
truck shutting down

i got an old 1979 ih cabover truck with a ntc 350 cummins 855.
my problem doesnt happen all the time. i noticed that at times my voltage guage drops rite down and if it drops far enough my truck dies. now sometimes i can start it rite up after it dies, but most of the time there may be a couple of minutes that go by then the truck will start. until i let it sit for a while the truck is dead no power at all.
i replaced the 3 batteries,thinking that fixed it, but a week and half later it died on me again.
i was told if it was my alt my truck should keep running.
what do you think. maybe an ignition switch?
thanks for any help or input.

Last edited by hss; 12-04-2010 at 04:20 AM. Reason: spelling
hss is offline  
Sponsored Links
post #2 of 3 (permalink) Old 12-04-2010, 02:01 PM
Senior Member
Join Date: Dec 2002
Location: California
Posts: 858
Feedback Score: 0 reviews
I'm not familiar with that engine, but I assume it has a fuel shut off solenoid.
Being a 1979, it would be straight mechanical injection and should continue to run with no battery or alternator input at all. I would check the fuel shut off and associated wiring..could be that something is shorting and causing the shut off to activate. On some engines, the temp or oil pressure senders will trip the fuel shutoff to prevent engine damage...might check those too. The ign switch might also cause this, at it is likely wired to the shutoff also.

'06 Ram 3500 4X4 QC CTD 6sp LB
'01 F350 PSD 4X4 6sp Crew Cab (sold)
'68 F250 C/S 4X2 C6/428PI
Stidham 24' enclosed car hauler
Bunch of big old cars

In theory, practice and theory are the same.
In practice, they are not.
Packard8 is offline  
post #3 of 3 (permalink) Old 12-05-2010, 03:51 AM Thread Starter
Join Date: Oct 2010
Posts: 39
Feedback Score: 0 reviews
i will check those out. i did find a loose positive cable going to my battery cut off switch.
do you think that could of been my problem?
hss is offline  
Sponsored Links

  Diesel Forum - > Other Topics > General Diesel
Gear in this thread - Powered by O'Reilly Auto Parts

Quick Reply

Register Now

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

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


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

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

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