freightliner fld starter relay.... - TheDieselGarage.com
TheDieselGarage.com
 

Home Forum Who's Online Today's Posts Vendors Advertise
Go Back   TheDieselGarage.com > Heavy, Medium, Work Trucks and Trailers > Heavy Duty

Thread Details Posted by snowman_w900, this thread has received 11 replies and been viewed 8851 times.

TheDieselGarage.com is the premier Forum on the internet. Registered Users do not see the above ads.
Reply
 
Thread Tools Display Modes
Old 01-03-2011, 11:29 PM   #1
snowman_w900
Junior Member
 
snowman_w900's Avatar
 
Join Date: Apr 2009
Location: Hillsboro,OH
Posts: 271
Points: 38,311
Thanks: 21
Thanked 26 Times in 25 Posts
freightliner fld starter relay....

i dont know how many of you had this happen, but today i went out to start my old freightliner fld, and it cranked kinda slow and plus it was cold out, it didnt start right away so i let off the button, and what do ya know! the starter stayed engaged! i even shut the key off and it kept cranking. By the time i got to the batterys, the starter was junked out. anyways.....not sure what caused this, but i figuer since i am gonna replace the starter and clean all the cable ends, i might as well put a new relay on.

my question is, is there only the one relay on the drivers side firewall under the wiper motor? anyone know what part number or better relay would be. i have a feeling this might have been what caused it. just curious if there is a better or updated relay......thanks guys.
snowman_w900 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 01-03-2011, 11:47 PM   #2
5.7diesel
Junior Member
 
Join Date: Dec 2009
Posts: 36
Points: 22,733
Thanks: 0
Thanked 2 Times in 2 Posts
common up here in the north. mostly on ag tractors if the batteries are not fully charged and starter needs a lot of amps it will fry the button in the starter soleniod to the input post. if it is super cold you should have a disconnect or a wrench to unhook the cables. have fryed a few starters up here. dale
5.7diesel is offline   Reply With Quote
Old 01-04-2011, 12:37 AM   #3
Les2
Senior Member
 
Join Date: Dec 2008
Posts: 440
Points: 35,028
Thanks: 67
Thanked 35 Times in 31 Posts
Should have hammered the starter that would've stopped it...

The relay you're talking about is the only one and it most likely wasn't what caused the problem. When them go bad they stop working.

In the 13+ years I've owned mine, I've replaced that relay more than twice but less than 6 times...lol
Les2 is offline   Reply With Quote
The Following User Says Thank You to Les2 For this addition to TDG:
snowman_w900 (01-04-2011)
Old 01-04-2011, 12:50 AM   #4
Johnp3
Junior Member
 
Join Date: Nov 2009
Posts: 3,482
Points: 48,147
Thanks: 67
Thanked 634 Times in 560 Posts
There are two magnetic switches that could stick there is the low amperage one on the firewall and there is the mag switch on the starter. You can test them if you disconnected the battery's, or if the starer is truly fried you just replace the complete set up. Starter and mag switch.
I could see smashing the mag switch on the firewall but hitting the starter, that can cost you a core. Also it will not release welded contacts.
__________________
1988 ford van fresh overhaul, 1991 nissan pick-up 1993 Caprice 2000 GMC S10 Blaser 2007 nbs 3500 GMC 4x4 crew-cab long box 17 inch single wheels Duramax Alison. BW turnover Ball. Furakawa FL35 loader. Retired, HD mechanic, worked on engines all my life. Fabricator welder. electrician. in the process of finishing my new shop. Live in Rock Creek B.C. Wife has a fruit stand.
Johnp3 is offline   Reply With Quote
Old 01-04-2011, 12:52 AM   #5
snowman_w900
Junior Member
Threadstarter
 
snowman_w900's Avatar
 
Join Date: Apr 2009
Location: Hillsboro,OH
Posts: 271
Points: 38,311
Thanks: 21
Thanked 26 Times in 25 Posts
i hear ya les. I was waiting for ya to weight in on this cause i know ya run a fld and i knew ya had for a while. this is the only one i have ever had, so i am not up to date on all the little details about the wiring on these freightliners.

so what do ya think. solenoid on the starter then. id say the ol starter was on its way out. i believe it was the original one. Thanks for the info LES!!!
snowman_w900 is offline   Reply With Quote
Old 01-04-2011, 01:07 AM   #6
jbstar62
Junior Member
 
jbstar62's Avatar
 
Join Date: May 2010
Location: Nashua,Ia
Posts: 15
Points: 18,697
Thanks: 6
Thanked 3 Times in 3 Posts
If you take the solenoid apart you will see that the copper washer is welded to contact from low voltage
jbstar62 is offline   Reply With Quote
Old 01-04-2011, 01:54 AM   #7
snowman_w900
Junior Member
Threadstarter
 
snowman_w900's Avatar
 
Join Date: Apr 2009
Location: Hillsboro,OH
Posts: 271
Points: 38,311
Thanks: 21
Thanked 26 Times in 25 Posts
thanks for the info JOHN. yeah i had the starter tested, its drawing alot of amps, so its time for a new one anyways i guess.....i am gonna replace the solenoid on the firewall too just to get it out of the way so i know what i got being that winter is here.

jbstar, what do ya think on the low voltage to the starter or solenoid situation. what would normally cause this to happen. i guess after hearing all this, i better check all my wiring coming up to the engine from the batt. box. Is there anyway the solenoid on the fire wall could have caused it, or just bad connection at the main starter wires or what?
snowman_w900 is offline   Reply With Quote
Old 01-04-2011, 02:29 AM   #8
Red Diesel
O'Skool Member
 
Red Diesel's Avatar
 
Join Date: Dec 2008
Location: The greenest state in the land of the free
Posts: 545
Points: 38,690
Thanks: 57
Thanked 105 Times in 86 Posts
Delco Remy site used to have lots of info to fix most any starter or battery or wiring problems if you have the right tools.

You have 42MT I assume.
Red Diesel is offline   Reply With Quote
Old 01-04-2011, 03:09 AM   #9
Johnp3
Junior Member
 
Join Date: Nov 2009
Posts: 3,482
Points: 48,147
Thanks: 67
Thanked 634 Times in 560 Posts
I spent 13.5 years working in Edmonton, While you have the batteries disconnected put each one separately on a regulated charger, clean all connections, grounds, cab leg ground especially. Test the batteries separately, How did I do jbstar.
When you get it together test the cables, and connections, with a voltage drop test. after it has run for a while test that you have at least 13.8 volts at each battery. I use to run an extra ground cable from the right frame rail to the alternator. #8 works #4 is better. Just a thought!
__________________
1988 ford van fresh overhaul, 1991 nissan pick-up 1993 Caprice 2000 GMC S10 Blaser 2007 nbs 3500 GMC 4x4 crew-cab long box 17 inch single wheels Duramax Alison. BW turnover Ball. Furakawa FL35 loader. Retired, HD mechanic, worked on engines all my life. Fabricator welder. electrician. in the process of finishing my new shop. Live in Rock Creek B.C. Wife has a fruit stand.
Johnp3 is offline   Reply With Quote
Old 01-04-2011, 10:51 PM   #10
5.7diesel
Junior Member
 
Join Date: Dec 2009
Posts: 36
Points: 22,733
Thanks: 0
Thanked 2 Times in 2 Posts
it is always a good idea if it is below 0* farenheit and you are going to try and start anything with any kind of delco starter is to have a disconnect plan thought out ahead of time. it is more common than you think to have a starter stick and keep spinning if the motor doesn't fire. have burnt up more than a few starters. dale
5.7diesel is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
GMC T6500 starter relay Victor Medium Duty 1 02-03-2010 03:32 AM
What would cause the starter bolts to break and the starter to break in half? Rgdl 2003-2007 6.0L Power Stroke 15 06-20-2009 01:18 AM
starter or starter selnoid? 96 stroker 1994-2003 7.3L Power Stroke 6 01-31-2008 03:23 PM
starter switch relay problems...volvo, N-14 centerline Heavy Duty 4 10-03-2007 12:46 AM
SD starter relay part # Ggg 1994-2003 7.3L Power Stroke 8 07-17-2005 12:43 AM

New To Site? Need Help? TDG Specials

All times are GMT. The time now is 04:22 AM.



Powered by vBulletin®
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
DTO Garage vBulletin Plugins by Drive Thru Online, Inc.
vB.Sponsors
vBCredits v1.4 Copyright ©2007 - 2008, PixelFX Studios