RV Trip Planning Discussions

Go Back   iRV2 Forums > THE CHASSIS CLUB FORUMS > Freightliner Motorhome Chassis Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
 
Thread Tools Search this Thread Display Modes
 
Old 09-28-2012, 06:34 AM   #1
Senior Member
 
rvjimmy's Avatar
 
Monaco Owners Club
Join Date: Mar 2011
Location: Almond, Wisconsin
Posts: 1,464
CAT 3126 glow plug problem

Don't know the right place to post this but will try a couple different sites. My wait to start lite quit coming on. It did start after a lot of cranking and a ton of smoke, is there a relay that could go bad and where is it. Had a Ford Power Stroke and it had a relay and when it went bad it would do the same thing. I just thought if someone knows it would save me a lot of time trying to find it. Jim
__________________

__________________
2006 Monaco Camelot 40 PAQ 400ISL - Toad Jeep Grand Cherokee - DW is the Nagivator. Work to travel and everything revolves around the price of diesel.
rvjimmy is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 09-28-2012, 07:16 AM   #2
Senior Member
 
lwasouth's Avatar
 
Winnebago Owners Club
Join Date: Oct 2008
Posts: 411
I may be the pressure regulator at the end of the Fuel rail in the cylinder head. If you are trying to start in moderate temperatures, glow plug won't make much difference
__________________

lwasouth is offline   Reply With Quote
Old 09-28-2012, 07:23 AM   #3
Senior Member
 
Tony Lee's Avatar
 
Join Date: Sep 2012
Location: Tasmania now, USA/Canada/Alaska in April
Posts: 2,472
Glow plug or air preheater?

Not that it makes a lot of difference as far as the controls go.
__________________
Tony Lee - International Grey Nomad. Picasa Album - Travel Map
RVs. USA - Airstream Cutter; in Australia - MC8 40' DIY Coach conversion & OKA 4x4 MH; in Germany - Hobby Class C; in S America - F350 with 2500 10.6 Bigfoot camper
Tony Lee is offline   Reply With Quote
Old 09-28-2012, 09:20 AM   #4
Moderator Emeritus


 
Country Coach Owners Club
Freightliner Owners Club
Join Date: Sep 2004
Location: Glen Allen, VA
Posts: 7,872
Blog Entries: 1
CAT 3126 does not have glow plugs and uses an air intake pre heater. Not sure there is a fuse for that but check the wiring diagram for your coach and see. Or, a visit to a CAT shop.
__________________
2007 Country Coach Allure Siskiyou Summit, sold/traded Nov. 2018.
2019 Grand Designs 384GK-R 5th wheel. Glen Allen, VA
smlranger is offline   Reply With Quote
Old 09-28-2012, 11:12 AM   #5
Moderator Emeritus
 
Gary RVRoamer's Avatar


 
Join Date: Jan 2000
Location: Silver Springs, FL. USA
Posts: 21,160
Most likely a fuse or relay for the air preheat. Assuming it's a Freightliner chassis (Newmar uses Spartan too), a call the Freightliner Customer Service with your VIN should get an assist on where those are located.

1-800-FTL-HELP
__________________
Gary Brinck
Former owner of 2004 American Tradition and several other RVs
Home is in the Ocala Nat'l Forest near Ocala, FL
Summers in Black Mountain, NC
Gary RVRoamer is offline   Reply With Quote
Old 09-28-2012, 11:39 AM   #6
Senior Member
 
Lug_Nut's Avatar


 
Join Date: May 2005
Location: British Columbia
Posts: 3,831
It probably has a heated grid not glow plugs. They are controlled by a timed relay that is also controlled by a sensor that measures the engine heat. With the key on you should see deflection in the voltage guage showing the load it draws. By the sounds of it, your grid, relay or controller is not funtctioning. I do not know where to locate them on your coach. You may have to seek help from your OEM or a Cat dealer. Wish I could be of more help.

Peter
__________________
Peter - Doctor of Mixology
KADB 2013
Lug_Nut is offline   Reply With Quote
Old 09-29-2012, 08:07 AM   #7
Senior Member
 
lwasouth's Avatar
 
Winnebago Owners Club
Join Date: Oct 2008
Posts: 411
I brought up the pressure regulator because that is what happened to me. It caused a lot of cranking because the fuel rail had leaked down. I don't disagree that you have a preheater problem, but It might be both.
lwasouth is offline   Reply With Quote
Old 09-29-2012, 08:16 AM   #8
Senior Member
 
OneRVer's Avatar
 
Triple E Owners Club
Join Date: Aug 2010
Location: Pacific Northwest
Posts: 727
Quote:
Originally Posted by lwasouth View Post
I brought up the pressure regulator because that is what happened to me. It caused a lot of cranking because the fuel rail had leaked down. I don't disagree that you have a preheater problem, but It might be both.
I hate to add another "what if", but, when my HEUI sensor went bad my coach acted the same way. Hard to start and a lot of smoke and for some reason my pre-heater was also acting up. I had to replace the sensor and the control valve.
__________________
1997 Triple E Empress, Freightliner Chassis, CAT 3126 w/ 275 horse's.
MD 3600 Tranny, 2011 Ford Escape Hybrid w/Blue Ox tow bar and Roadmaster Base Plate.
Amsoil Synthetic Oil only for my baby.
OneRVer is offline   Reply With Quote
Old 09-29-2012, 05:24 PM   #9
Senior Member
 
rvjimmy's Avatar
 
Monaco Owners Club
Join Date: Mar 2011
Location: Almond, Wisconsin
Posts: 1,464
I was wrong on the glow plug, It is a heat grid. It must be a sensor as it starts right up when I use the engine water heater, no smoke and it runs and starts good. Just have to find out what sensor it is. Jim
__________________
2006 Monaco Camelot 40 PAQ 400ISL - Toad Jeep Grand Cherokee - DW is the Nagivator. Work to travel and everything revolves around the price of diesel.
rvjimmy is offline   Reply With Quote
Old 10-09-2012, 06:08 PM   #10
Senior Member
 
rvjimmy's Avatar
 
Monaco Owners Club
Join Date: Mar 2011
Location: Almond, Wisconsin
Posts: 1,464
Worked on my pre-heat problem Saturday. I was going to check to see if the relay that I thought might be the one was working. I had Kate go inside and turn the key on and she yelled out that the wait to start lite was staying on. So when it went out I had her start it, no smoke and ran fine, the wait to start lite came back on like it should and all was good. Went out Sunday morning, 35 degrees and it worked like it should and started right up. I don't know if I should give the DW credit for fixing it or not but it works now and I'm happy. Jim
__________________
2006 Monaco Camelot 40 PAQ 400ISL - Toad Jeep Grand Cherokee - DW is the Nagivator. Work to travel and everything revolves around the price of diesel.
rvjimmy is offline   Reply With Quote
Old 01-06-2013, 01:50 PM   #11
Senior Member
 
Georgie Boy Owners Club
Join Date: Dec 2012
Posts: 127
Quote:
Originally Posted by rvjimmy View Post
Worked on my pre-heat problem Saturday. I was going to check to see if the relay that I thought might be the one was working. I had Kate go inside and turn the key on and she yelled out that the wait to start lite was staying on. So when it went out I had her start it, no smoke and ran fine, the wait to start lite came back on like it should and all was good. Went out Sunday morning, 35 degrees and it worked like it should and started right up. I don't know if I should give the DW credit for fixing it or not but it works now and I'm happy. Jim
First things first, the DW gets all of the credit. Your HEUI pump and fuel regulators are also working. Your heating grid is more than likely the cause. I have not had a problem with mine but there should be a relay to handle the load, you may want to locate that for later. If I am correct the block temp is reported by the engine ECM and that is passed off to the light and control side of the relay. It will take longer to shut of the wait light off the colder the engine is. The control side is not as likely to be the problem.
__________________

glenn allen is offline   Reply With Quote
Reply

Tags
cat



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Featured Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 07:41 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
×