The heater valve is located under the leaf trap. Open the hood, and remove the plastic grille which sits on either side of the windshield wiper. Valve is on the passenger side and has a red vacuum pipe coming out of it.
See if it holds vacuum.
I have a web page which can help troubleshoot this system:
http://cacavas.com/mb/TTM.html
Good luck,
John Cacavas
Los Angeles, California
jcacavas@gmail.com
please tell me where this loose vacume hoes goes to on my caprice from the heater valve to where?
There is not one. The Heater core has Full flow all the time.
It does not have a heater control valve.It does not have a heater control valve.
it is probably the heater control valve see my tutorial on this at http://www.benzworld.org/forums/w201-190e-d-class/1358590-troubleshooting-mercedes-benz-190-e-d-210-tempmatic-climate-control-system.html#post2716281
It does not have a water flow valve in the heater plumbing.It does not have a water flow valve in the heater plumbing.
The heater control valve is used to shut off hot coolant from entering the core when the heater is in the off position. A heater control valve can be actuated by either a vacuum line or a cable from the vacuum heater control valve to the heater core. This hose should be warm; if not the heater control valve is stuck and needs to be replaced
The heater valve is located inside the heater box.
Where is the the heater control valve??
where is the heater control valve
Premium. Always.
firing order is1432
where is the heater control valve on a 1994 2500 suburban