|
|
|
#1
|
|||
|
|||
monvalue doesn't stop cold air
replaced the monovalue on 89 420sel, but still have cold air coming out of defrost at the same time warm air our of heater vent. what should i try next or shall i learn to live with it?
|
#2
|
||||
|
||||
Next step is to test every vacuum actuator and all of the vacuum system that is underneath the dash. Sounds like a vacuum problem now. Make sure you test the vacuum solenoid valves too. Tney are located behind the pushbutton unit on the 300D - not too sure on your model. When I was going through my 300D I found two of these in need of replacement.
__________________
Jim |
#3
|
|||
|
|||
guy
You might also check the pushbutton unit. I've replaced it in two of my 126 cars, along with monovalves. The last pushbutton unit checked out OK but it was the problem. I was not getting heat into the footboxes. Also, check the aux. water pump for function as it has an effect on the pushbutton unit. Happy hunting. |
Bookmarks |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
COLD AIR INTAKE the M103 300E | FA22 | Mercedes-Benz Performance Paddock | 12 | 11-11-2017 06:45 AM |
COld air intake W201 190e | crhenkel | Mercedes-Benz Performance Paddock | 21 | 09-01-2007 06:18 PM |
Mass Air Senson, '92SL | c4791p | Tech Help | 7 | 10-17-2004 01:20 PM |
Cold Air Intake System | Turbo][ | Mercedes-Benz Performance Paddock | 4 | 01-21-2004 05:02 PM |
Air Conditioning Not Blowing Cold Air | Ammadeus | Tech Help | 3 | 07-28-1999 11:19 PM |