Go Back   iRV2 Forums > THE CHASSIS CLUB FORUMS > Freightliner Motorhome Chassis Forum
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 11-27-2013, 05:31 PM   #1
Senior Member
 
rgreen45's Avatar
 
Join Date: Jun 2011
Location: Bradenton, Fl.
Posts: 634
Ambient air/barometric pressure sensor

Here's the scoop: It's an '03 Allegro Bus, Freightliner chassis, Cummins ISC engine. I need to replace this sensor but I can't find it. Cummins Quickserve has a TSB on this (TSB100488) informing us that the new one is mounted differently than the old one. I'm good with that but I need to find the present one first!!

The part number of the sensor is 4902720 which supersedes sensors numbered 3080407 and 3085140. The new one was introduced in Feb '06. The TSB says the new sensor "will not" thread or bolt into existing sensor locations so the old one may not resemble the new one. The new sensor is to be cable tied and taped to the wiring harness, parallel with the ground, and pressure port facing down.

Any help is greatly appreciated. I've already called Freightliner and they were no help.
__________________

__________________
Ray G.
ASE Master Med-Heavy Trucks
RVIA Certified
rgreen45 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 11-27-2013, 08:36 PM   #2
Senior Member
 
Roosters 67's Avatar


 
Join Date: Nov 2013
Posts: 100
If i recall, that sensor is near the Ecm or is going to bolt onto the block, on the intake side It has been awhile, but maybe that will help ya.
Spence
__________________

__________________
Spencer & Tracie
RVM#62
2013 RAM 3500DRW Cummins 385HP,850FTLBS, 2002 Gulfstream Yellowstone Y28FRK 5'vr,
Spare puller:2004 RAM3500DRW Cummins
Roosters 67 is offline   Reply With Quote
Old 11-28-2013, 06:41 AM   #3
Senior Member
 
rgreen45's Avatar
 
Join Date: Jun 2011
Location: Bradenton, Fl.
Posts: 634
Quote:
Originally Posted by Roosters 67 View Post
If i recall, that sensor is near the Ecm or is going to bolt onto the block, on the intake side It has been awhile, but maybe that will help ya.
Spence
Thanks Spencer. The ECM is in a compartment on the left side and I checked there already. I've searched the intake side of the engine as best I could but maybe I need to get out a mirror and look harder. As you know, it's often hard to see every inch when you're dealing with a DP.
__________________
Ray G.
ASE Master Med-Heavy Trucks
RVIA Certified
rgreen45 is offline   Reply With Quote
Old 12-06-2013, 06:41 AM   #4
Senior Member
 
rgreen45's Avatar
 
Join Date: Jun 2011
Location: Bradenton, Fl.
Posts: 634
I finally found it. It's bolted to the block, below the intake manifold, and towards the rear. The replacement is different and mounts differently so no need to remove the old one. Good thing because you can barely see it on this coach.
__________________
Ray G.
ASE Master Med-Heavy Trucks
RVIA Certified
rgreen45 is offline   Reply With Quote
Old 12-06-2013, 11:02 AM   #5
Senior Member
 
Roosters 67's Avatar


 
Join Date: Nov 2013
Posts: 100
Good deal Ray, Glad to know my memory isnt totally gone... glad ya found it
Spence
__________________
Spencer & Tracie
RVM#62
2013 RAM 3500DRW Cummins 385HP,850FTLBS, 2002 Gulfstream Yellowstone Y28FRK 5'vr,
Spare puller:2004 RAM3500DRW Cummins
Roosters 67 is offline   Reply With Quote
Reply



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



All times are GMT -6. The time now is 10:12 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2014, vBulletin Solutions, Inc.