1998 plymouth voyager vents changes from hot to cold to top defrost vents down to floor all on its own

SOURCE: My ac will not change vents in my 95 plymouth grand voyager

You have a broken plastic vacuum line in your engine compartment. Look for the line near where the A/C lines go through the firewall. Then look for the other end of the line to be coming out of the intake manifold. When you find both ends, it can usually be spliced with a piece of small rubber vacuum hose. I usually use hose that is intended for use on windshield washer lines, which can be purchaced at most any retail parts outlet. Most of the time, you only need about an inch of rubber hose to splice it with. You can probably get the parts counter person to GIVE you a small piece.

marcial adorno

• 246 Answers
• Posted on Sep 09, 2009

SOURCE: My plymouth voyager stall cold or hot.

did you try the crank position sensor?

Bobby Memory

• 258 Answers
• Posted on Oct 19, 2009

SOURCE: how to change 1998 Plymouth grand Voyager front sway bars

unbolt the sway bar links from the control arms and the two brackets holding it to the frame. make sure if you jack it up jack up the front end. if you jack up one side and not the other and take the sway bar loose it will be loaded and could cause injury if not careful as long as both front tires are off the ground the sway bar will not be loaded and will be safe to deal with

SOURCE: heater blows cold air 1995 plymouth voyager

With the engine cold & the radiator full remove the radiator cap and start the engine. Let the engine reach operating temperature which will open the thermostat. When it opens the water in the radiator will start circulating if the pump & thermostat are operating properly. If all is ok replace the cap and turn the temperature lever on the heater to hot If you still have no heat check the heater valve on the engine firewall. Open it manually and see if you have heat. If yes check the cable from the velve to the temperature lever.