ABS - Diesel Truck Forum - TheDieselGarage.com
Thread Details Posted by pblankenship, this thread has received 6 replies and been viewed 9908 times.

 
LinkBack Thread Tools Display Modes
post #1 of 7 (permalink) Old 06-07-2009, 06:52 PM Thread Starter
Farmer/Driver/Student
 
pblankenship's Avatar
 
Join Date: Jan 2009
Posts: 200
Points: 36,285
Thanks: 18
Thanked 19 Times in 17 Posts
ABS

My ABS light came on in my Western Star, it claims to have a WABCO ABS system in it. I was just wondering if there are any simple problems that occur, or if I should just take it into the shop. The only reason that I ask is that I can't stand it when "idiot" lights come on. Heck, I was looking to see if there was an easy way to unplug the light and go down the road. I am pretty sure that I don't need the system during the summer, and from what I understand it only affects the one corner that has the problem anyway.

2001 Western Star 4964EX: It's got a CAT
2000 Kenworth W900L: It's got a CAT
pblankenship is offline  
Sponsored Links
Advertisement
 
post #2 of 7 (permalink) Old 06-07-2009, 10:40 PM
O'Skool Member
 
Red Diesel's Avatar
 
Join Date: Dec 2008
Location: The greenest state in the land of the free
Posts: 579
Points: 57,618
Thanks: 63
Thanked 121 Times in 98 Posts
Garage
Check the literature section here --> http://www.meritorwabco.com/literature/default.asp

You would look here for tractors --> http://www.meritorwabco.com/literature/pneumaticabs.asp

Here for trailers --> http://www.meritorwabco.com/literature/trailerabs.asp

Look what model valve you have then download the correct Maintenance Manual. Your truck should have came with one from the dealer.

You might be able to make it do a blink code and find out where the fault is.
Red Diesel is offline  
post #3 of 7 (permalink) Old 06-07-2009, 11:41 PM
Senior Member
 
clueless's Avatar
 
Join Date: Dec 2008
Location: pennsylvania
Posts: 169
Points: 26,636
Thanks: 0
Thanked 14 Times in 14 Posts
check the sensors,push them in all the way to the tone ring,thats all the adjustment they get.as for the system in general,when the light is on,the system reverts back to standard braking system,meanign it will still work.sometimes they have a switch that will give you a flash code to tell you the problem.check the fuse first.simple fix,if it is blown,then you have a problem,if not then check the sensors next.sometimes they come unplugged.
clueless is offline  
post #4 of 7 (permalink) Old 06-08-2009, 02:55 AM
trucker trash
 
Join Date: Dec 2008
Location: Miami,Ok
Posts: 229
Points: 32,156
Thanks: 17
Thanked 9 Times in 8 Posts
Hopefully it is just the tone ring but many times the ABS light can also mean you have a bearing problem. When the hub starts to heat up it will take out the sensor. I have never actually had an ABS light come on that wasn't caused by bearing problems. Does your STAR have sealed hubs?

To friggin lazy retype my sig again. Damn hackers.
truckdriver is offline  
post #5 of 7 (permalink) Old 06-09-2009, 10:18 AM Thread Starter
Farmer/Driver/Student
Threadstarter
 
pblankenship's Avatar
 
Join Date: Jan 2009
Posts: 200
Points: 36,285
Thanks: 18
Thanked 19 Times in 17 Posts
yup, sealed hubs. I know that the last time I had this problem (yes I have had this problem before and I have only had the truck for 8 months) that is was a loose connection, but last time I found it very quickly, this time it's not so apparent.

2001 Western Star 4964EX: It's got a CAT
2000 Kenworth W900L: It's got a CAT
pblankenship is offline  
post #6 of 7 (permalink) Old 06-09-2009, 02:19 PM
Fire App. Mech.
 
Join Date: Aug 2005
Posts: 982
Points: 33,896
Thanks: 0
Thanked 46 Times in 40 Posts
Very easy to diagnose and repair ABS systems.

First find the ABS brain box in the dash, behind the seat or on the frame somewhere and get the version/model number off of it. Also find the ABS diagnostics switch tucked away somewhere there. Also check to see how many sensors and modulators you have on the rear wheels.

Next go to WABCO's web site and download the manual for it. Get the blink codes and do what the manual says to determine what is causing the blink codes. Fix the problem and no more light.

Birken
Birken Vogt is offline  
post #7 of 7 (permalink) Old 06-09-2009, 10:10 PM Thread Starter
Farmer/Driver/Student
Threadstarter
 
pblankenship's Avatar
 
Join Date: Jan 2009
Posts: 200
Points: 36,285
Thanks: 18
Thanked 19 Times in 17 Posts
Thanks Birken, I will do that, seems like a logical deduction given the newer trucks have so many computer components.

2001 Western Star 4964EX: It's got a CAT
2000 Kenworth W900L: It's got a CAT
pblankenship 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













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