When do engines lose power when the AC is running?
, 15 years as a professional mechanic. Engines lacking in torque lose power and acceleration when the AC compressor is running. This is particularly noticeable in older vehicles which used higher drag compressors for some reason. Newer vehicles use variable displacement compressors for less drag as well.
Why does my air conditioner cut out when I accelerate?
Typically this occurs due to a bad vacuum check valve under the hood. During hard acceleration the AC door system loses vacuum, causing the doors to default to the windshield. This check valve keeps this from occurring. It is located under the passenger side of the hood.
Why does a car slow down when the air conditioner is on?
The compressor requires 5–10 horsepower to pump the fluid. Say your car has 100 horsepower to get you down the road, when the AC turns on the compressor uses 5–10 horsepower and now your car effectively has less horsepower to get you down the road, which is why you slow down.
What happens when an AC compressor is running?
Engines lacking in torque lose power and acceleration when the AC compressor is running. This is particularly noticeable in older vehicles which used higher drag compressors for some reason. Newer vehicles use variable displacement compressors for less drag as well.
Why does the blower motor slow down when accelerating?
However, if the vacuum motor develops a small leak, or there is a leak in the vacuum hose or the dashboard switch, the drop in vacuum may be too much to overcome. That’s when you get a change in airflow. When the door doesn’t operate properly, it may sound like a Blower motor slows down when accelerating
Why does my air conditioner slow down when I Turn on the fan?
That’s when you get a change in airflow. When the door doesn’t operate properly, it may sound like a Blower motor slows down when accelerating Sometimes, when a vacuum motor defaults due to loss of vacuum, and the system uses two vacuum motors to switch modes, it may seem as if the fan is losing speed.
Why does my Van Fan stop blowing when I accelerate?
When I drive my 6.0 diesel van ,my cooling fan works normally. When I put on the AC, in a few seconds the clutch fan , starts sounding like a school bus.after a few min. on the highway it stops for a … read more What would cause car a/c to not cool when car is accelerating?
When does the air conditioner cut out when accelerating?
Whenever I press down on the accelerator, whether just picking up speed or going up a hill, the stream of cold air coming from the air-conditioner stops. This lack of A/C typically lasts 12 to 15 seconds. In the hot summertime, you can be sweating by the time the air-flow resumes.