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Assuming you mean "increases" in speed, as you accelerate the engine the HVAC (Heating Ventilation Air Conditioning) system is loosing its vacuum supply to function properly. Normally the system depends on a vacuum reservoir to maintain operation. This happens when the vacuum supply from the engine is leaking because of damaged/cracked/pinched vacuum lines. Inspect all the vacuum lines associated with the HVAC system.
What else can I help you with?
What causes the blower on a 2001 Chevy Silverado to work on high but not on low?
the blower fan rheostat usually located in blower box is like a resistor that draws energy from the blower fan supply to slow it down and there is a high speed fan relay for the fastest speed. So your rheostat is not working
Why do Slow down and slow up mean the same?
I think you mean slow down and speed up. slow down =slow, speed up=fast
Is it possible to slow down the speed of light?
No, it is not possible to slow down the speed of light in a vacuum.
What would cause my blower motor on my truck to slow down while driving If you tap on it it usually comes back to full speed but then gradually slows down?
The blower motor is tired. It will eventually blow a fuse and/or burn out the blower motor speed resistor. Time to replace the blower motor. Also check connections for high resistance damage (melted connections).
Does the PNS slow down or speed up HR?
slow down
Does sugar slow you down or speed you up?
speed you up
On down shifting does a synchro speed up or slow down a gear?
Speed up
What are the release dates for Slow Down to the Speed of Virginia - 2013?
Slow Down to the Speed of Virginia - 2013 was released on: USA: February 2013
When the exponential phase of a logistic growth curve of a population ceases what happen to population growth?
population growth begins to slow down
What happend to forces when thing speed up or slow down?
Nothing happens to the forces. The forces are what makes the thing speed up or slow down.
What can you put in milk to slow down the speed of souring?
You dont put in anything to slow it down, you simply reduce the temperature thus causing the reaction to slow down
Why does a pickup truck ac blower blow fast and slow on max speed?
You need to explain again with more detail.
