need vacuum hose diagram fast idle ac
You can find a 1987 Ford E1 50 vacuum operated heater control diagram at your local Ford dealership. Most local libraries will have Ford service manuals with the diagram.
Diagram for vacum line / heater lines for 1983 nissan 280z
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
Phew and Wow, there are many vacuum diagrams-heater/air control,brake booster,rear driveline etc.Can you be more specific and include engine size.
vacume line to the valve has broke off from manifold vac that goes to the switch
Go to the dealer and ask them to photocopy the page for you. Keep in mind though, that half of that system is vacuum contoled. You may need the vacuum diagram as well.
There is no heater control valve on this generation of dodges like there used to be... the water flows constantly through the heater valve.. the only control is a trap door that allows cab air to be run through the heater core and is controlled by a vacuum solenoid in the heater box.. the temp control is also vacuum operated but be sure to check the vacuum supply line coming in from the engine.... it has a check valve in it that can be keeping the controls from getting enough vacuum to operate properly.. if you don't have a mighty vac just get one of those packs of barbed vacuum fittings from your local shucks and bypass the valve temporarily and see if you get heat... hope this helps
Some systems use engine vacuum to move the control doors. You could have a vacuum leak.
if im not mistaken the heater control has vacuum lines. take off heater controls and see if you have a bad vacuum line to heater box.
Google search - 351M vacuum diagram
Vacuum issue somewhere Vacuum issue somewhere
There is a heater control valve on the 1999 Ford Ranger. There is no thermal vacuum valve on this year of the vehicle.
Vacuum diagram for the emission control system is located on the under side of the hood on the passenger side. For a more complete diagram, you may try vehicle repair books (such as "Motors Manual" in the library).
vacuum line diagram
It all depend if it is vacuum operated or electrical. If it is vacuum check the vacuum line attached to the intake manifold, it might have come loose. If its electrical check the heater control panel.
The heater control valve is on the left hand side of the engine bay, under the air intake duct. it has two heater hoses running to it and one vacuum line running to it.
Even a Hayne's manual nowadays includes most vacuum diagrams for emissions control items. They vary, however, from engine to engine and are different for Federal or California emissions systems. In the Related Links section are the diagrams you are looking for.
the vacuum hose connects to the airbox
Possible causes are, low on coolant, thermostat stuck open, clogged heater core or vacuum scorce not getting to the heater control.
what is the importance to the blood pressure control?
Check behind the heat control panel to be sure that the vacuum hoses are all securely plugged into the control switch. As a safety measure on all cars, if you lose vacuum altogether, the default position for air direction is on defrost, so you can always see out of the windshield. Jake McCahn
The diagram is posted under the hood by the release. It should give you a fair idea where to look for the vacuum hoses for the air conditioner. There is a set of vacuum connectors on the fire all right behind the air cleaner that I think are for the A/C.
That is called a heater control valve. When you are not using your heater, vaccume closes a small valve that's in the control valve and stopes the water from going through the heater core. Therefore you get no heat inside of the cab.