Asked in Heater Cores and Blower Fans
Why is there a hissing noise from the heater controls?
Some systems use engine vacuum to move the control doors. You could have a vacuum leak. ...
Asked in Ford Expedition XLT
How do you repair the blend door in the heater on a 1999 Ford Windstar?
The blend door is vacuum controlled. Any vacuum leak in the engine system can cause the door to not function properly. Check this system first. The door could be physically sticking but a vacuum leak is a more common problem. ...
Asked in Car Shaking Problems, Buick LeSabre
Why would a car shake if the heat is on?
A good place to start is to check for leaks in the vacuum lines associated with the heater controls. Many of the controls are vacuum actuated & if there is a leak in a control or associated line it may cause a rough idle ...
What causes the rpm to flactuate on a 1998 ford windstar?
Probably a vacuum leak
In a 99 Windstar LX the heater blower is stuck in the windshield position I move the selector but nothing changes how do you fix this problem?
Could be a vacuum leak "defrost" is the default position of the system Check vacuum lines and motors under the dash ...
Why would the AC only blow through the bottom in a '92 Dynasty and never from the front too?
Check for vacuum leak or bad vacuum motor (under dash) Check operation of heater controls ...
Asked in Car Heaters, Ford Windstar
Can a plugged up heater hose cause a massive leak from the heater hose connector on a 2000 Ford Windstar The heater stopped working a few months agoand I've already changed the thermostat.?
A blocked heater hose could cause a leak. A stopped up heater core could as well. Or the connector in the Windstar could be cracked. ...
Asked in Chevy S-10
Will a vacuum line leak keep the air condition from cooling on a 1995 s10?
Some of the HVAC controls are vacuum operated so, yes a vacuum leak could effect the cooling. ...
Asked in Auto Parts and Repairs, Ford Windstar
How do you repair codas p0171 and p0174 on a 1999 ford windstar?
You probably have a vacuum leak. Check under the hood for a disconnected vacuum hose. ...
Your dodge heater blower changes when you accelerate?
Start out by checking for a vacuum leak both inside and outside for the a/c and heater......... ...
Why does heater default to defrost on a 2003 jeep wrangler?
It's a vacuum leak somewhere in the system. There are several vacuum lines that operate the blend doors on the system. If there is a leak where the system will not hold vacuum, it will default to defrost automatically. ...
What would make your 1998 Dodge Ram 1500 AC to change from blowing out the front vents to blowing out the defrost vents upon acceleration?
you have a vacume leak probbly going to the heater control There is a check valve that prevents the loss of vacuum to the heater controls. This check valve goes bad. Then, as you accelerate, the vac. in your engine drops and along with it, the vac to the heater controls drops (is less). To fix this, locate the check valve and replace it. Follow the vacuum line from your firewall (where it goes through the fire wall) back to the...
How do you find heater core leak in 2001 ford windstar?
Once a heater core starts to leak, the only remedy is to replace it. Luckily it appears to be a pretty straight-forward job on the Windstar - the heater core is at the bottom of the center of the dashboard - remove the ductwork and some of the trim pieces to expose the heater core compartment. Of course, this is after draining the engine coolant and disconnecting the heater hoses in the engine compartment. See "Related Questions" below for more... ...
Why does your air conditioning and heater only blow out the bottom vents on your 1997 trans am?
Bad selector? vacuum leak at engine or vacuum motors under dash
Asked in Car Smells, Ford Windstar
Your ford windstar has a steam that comes into the vents when the car is warmed up that covers the entire inside of window It also has a antifreeze smell when the AC or heat is on any thoughts?
This will happen if you have a slight leak or leak in your heater core. Have your heater core checked for leaks. ...
Asked in Car Stalling Problems, Ford Windstar SEL
What would cause your 2000 ford windstar to idle hgh at str and stall when coming to a stp after driving?
A serious vacuum leak could cause that.
Asked in Cars & Vehicles
Can a vacuum leak from the brake booster cause the transmission to shift at higher rpm's?
yes,being that in most cars the vacuum runs most controls on & around the engine ...
What would cause the heater-ac blower on a 1996 Grand Cherokee to only blow out the window defrost and not at the feet and panel?
You have a vacuum leak. When the a/c controls don't get any vacuum, it defaults to the defrost position. Check and make sure someone didn't accidentally disconnect the vacuum hose with their feet. Look under the dashboard on the passenger side. ...
Asked in Chevy Tahoe, Chevy Trucks and SUVs
When you turn on the ac why does it only blow through the floor heater vents on a 2000 Chevrolet Tahoe?
Check for vacuum leak or bad vacuum motor Check selector control
Asked in Auto Parts and Repairs, Air Conditioning and Coolant, Ford Aerostar, Heater Cores and Blower Fans
What could the problem be on 1988 Ford Aerostar when AC blows air out dash vents and floor but heater and defrost do not blow any air at all?
A vacuum leak, or one of the doors is sticking/bad vacuum motor in the heater box. ...
Asked in Dodge Durango
What does the code P2173 on a 2005 dodge durango 5.7L mean?
P2173 High AirFlow/ Vacuum Leak Detected (Slow Accumulation). You have a vacuum leak in the intake manifold. P2173 High AirFlow/ Vacuum Leak Detected (Slow Accumulation). You have a vacuum leak in the intake manifold. ...
Asked in Nissan Altima
Where is heater core in 2005 Nissan Altima?
why is my 2006 Altima blowing cold air when not in motion , example stop light or as soon as it is idling even when it has ran for a long time and the engine is warm. The controls for the "doors"(vent covers that direct the air)are run by vacuum. There cold be a vacuum leak of one of the doors is stuck. ...
How do you fix the air conditioner on a 2002 Ford Windstar that switches from the panel to the defrost vents when the engine is under a load?
Sounds like you have a vacuum leak - -bad or loose hose or defective diaphragm in one of the vacuum motors ...
1989 mini van windstar vacuum leak how much should they charge you?
Windstar's weren't built until 1995, so do you have an aerostar? or a totally different vehicle? ...
Why would the air only blow out of the dash vents but not my floor or defrost vents in my 2005 Chevy cavalier?
Check the following.......... 1. Vacuum leak, broken vacuum line or disconnected vacuum line. 2. A/C - heater inside car door operation.. 3. A/C - heater controller.. ...