Question about 1999 Oldsmobile Bravada

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My heat gets hot than cold

Sounds like a vacuum hose is loose, when it gets hot it turns cold and vise-versa

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Its the climate control device on your car... its tricky to get it at a comfortable setting.. but you should get it after a while

Posted on Mar 26, 2009

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96 dodge grand caravan... blows cold on passenger side when heater on, as well controls reversed. cold is hot nad hot is cold


SOMEHOW I BELIEVE YOUR TWO INTAKE & RETURN HEATER HOSES THAT FEED THE HEATER CORE HAVE BEEN REVERSED. EITHER THAT OR a plugged heater core

Feb 10, 2013 | 1996 Dodge Grand Caravan

1 Answer

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


sounds like you have a broken vacuum hose for heater controls or vacuum reserve tank if controls changes when accelerating or going up steep hill, check your vacuum hoses from engine to inside controls

Sep 03, 2012 | 1998 Plymouth Voyager

1 Answer

2005 Chrysler Pacifica heater goes from hot to cold by itself.


Under the dash there are doors that open and close to give you hot or cold. Sounds like you have a vacuum leak in a hose or one of the vacuum motors that moves the door I would hook up a cheep hand held vacuum pump to each one and see if they hold vacuum also the one that opens the door that keeps the heat blowing is the one to look at if the door stays open and you have heat with the hand pump and you don.t have to keep pumping it the hose or farther back is leaking.

Dec 02, 2011 | 2005 Chrysler Pacifica

2 Answers

I have a 93 delta 88. heat comes and goes. we have changed the thermostat, and checked fluids. the car does not run hot. but the heat will work one day and blow cold the next.


Check the vacuum diaphragm in the heater hose. It's a little metal valve with a hose going to it. When the heat is turned on the vacuum line opens the valve letting hot water pass through the heater core.

Mar 14, 2010 | 1988 Oldsmobile Delta 88

1 Answer

When i turn my car from hot to cold or vise versa it sounds like something is disconnected to the flap.can i see a diagram of the flap?


There is a tsb about replacing the secondary heater door for that noise. The door warps and hits the main door. It can also cause the heat control to be inop.The dash has to be removed to replace the door.

Dec 16, 2009 | 1999 Ford Taurus

1 Answer

2001 Chevy S-10 AC stops after about ten minutes


Sounds as if there may be a vacuum leak somewhere, possibly behind dash causing it to switch back and forth from hot to cold and vise versa

Sep 04, 2009 | 2002 Chevrolet S-10

1 Answer

2004 f-150 heat control will not switch from defrost to floor


You have a vacuum leak that is not only affecting motor operation but also the correct operation of the vacuum switch controlling your damper. Need to have that matter resolved -check all vacuum hoses and fittings for integrity/tightness. Vacuum switch itself might be leaking!

Sep 02, 2017 | 2004 Ford F150

2 Answers

I have no heat in my 1995 maxima


You need to check your coolant level first & make sure its up where it should be. If that doesn't cure your problem, or you've already topped it up, please get back to us.

Jan 08, 2009 | 1995 Nissan Maxima

1 Answer

Climate contol air condition blows hot air drivers side and cold air passenger side how can this problem be fixed


This sounds like a problem with the one of the temperature door actuator motors. Depending on which side has the problem- Hot on dr. side when you want heat but cool oin pass. side when you want heat. Or vise-versa. These motos are approx. $75 plus 1 1/2 hours labor to install.
for more info, see this page i found......
http://www.greatautohelp.com/more_oldsmobile_questions.html

Jul 30, 2008 | 2001 Oldsmobile Intrigue

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