D24T.com  

Go Back   D24T.com > Technical Discussion Area > Body and Interior
Register FAQ Community Calendar Today's Posts Search

Reply
 
Thread Tools Display Modes
  #1  
Old 11-29-2010, 11:45 AM
bryancald bryancald is offline
Member
 
Join Date: Apr 2010
Location: SoCal
Posts: 44
Default Troubleshooting HVAC controls

Does anybody have vacuum diagrams for a diesel 240 HVAC system?
I can get heat/no heat with the temp slider.
What I can't do, is change where the air flows (it will only flow through the dash).
Now that it's winter, I need to defrost the windshield.

Is there a vacuum solenoid or something that fails routinely on these systems?

Thanks!
Reply With Quote
  #2  
Old 11-29-2010, 12:15 PM
nick nick is offline
Member
 
Join Date: Sep 2010
Location: St. Augustine, FL
Posts: 56
Default

I have a simlar problem with my 760, but in my case the air only blows out of the window defog vents. I can't get it to blow onto the passengers!

Sorry, I don't have any 240 vacuum diagrams. You should use www.ALLDATAdiy.com or AutoZone's "Mitchell"

I use ALLDATAdiy for my 760.
Reply With Quote
  #3  
Old 12-16-2010, 03:20 PM
casioqv casioqv is offline
Senior Member
 
Join Date: Apr 2010
Location: California
Posts: 153
Default

It's a very simple system with just 3 mechanical vacuum switches which operate pneumatic servos- no electronics or anything. You probably just have a vacuum leak or disconnected line somewhere in the system, which you can trace via a handheld vacuum pump.

A cheap temporary fix if you find that one of your pneumatic servos leaks is to just cap off the line to it, and then everything else will start working again.
__________________
'84 760 D24T/M46
'86 Isuzu Trooper Turbo Diesel
'01 VW Golf TDI
Reply With Quote
Reply


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


All times are GMT -8. The time now is 12:26 PM.


Powered by vBulletin® Version 3.8.10
Copyright ©2000 - 2024, vBulletin Solutions, Inc.