Why does my AC not work 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.
How do I know if my AC pressure sensor is bad?
Symptoms of a Bad or Failing AC Pressure Switch
- AC system cutting on and off rapidly. Repeatedly cycling on and off is part of the normal operation of an AC system.
- Unable to cool the car.
- Compressor not coming on.
Why does my AC only work when I give it gas?
Usually it means you are low on refrigerant, just a bit. The compressor is usually on a belt takeoff from the engine so it works better at higher engine RPM. If its not working at idle RPM of around 600–800 but works at engine cruising RPM of 1000 to 1500 or more, then you are probably a little low on refrigerant.
Why does my AC only get cold when I press the gas?
This commonly happens when the evaporator coil gets dirty (accumulated dirt/dust in the air flowing through it), thus causing lower air flow across the condenser. This causes the condenser to freeze, resulting in lower air flow at a higher temperature. The solution for this problem is to clean the evaporator coil.
How do I test my AC pressure sensor?
Attach a low-pressure gauge from a refrigerant recharge kit to the low-pressure fitting which is located between the accumulator and the compressor, marked with a capital “L”. Now, check the pressure of the air conditioning system. The low-pressure gauge should measure 56 psi or higher.
What are common reasons my Toyota Sienna has air conditioning problems?
What are common reasons my Toyota Sienna has air conditioning problems? While there are a variety of reasons your Toyota Sienna air conditioning won’t work, the most common 3 are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor.
Why is the AC clutch on my Toyota not working?
If the AC compressor clutch won’t engage on your late model Toyota and you find a B1479 Flow Control Circuit trouble code stored, the problem is usually a bad flow control sensor. Toyota uses the AC flow control sensor to detect the amount of refrigerant flow through the compressor.
What causes Toyota Sienna engine to turn to sludge?
As a result, the trapped heat can cause the oil to turn to sludge. In 2007, Toyota agreed to cover the costs to repair 1998-2002 Sienna engines damaged from oil sludge. They also reimbursed the affected Sienna owners who had already paid for engine repairs. Broken Door Handle: This happens to many 1997-2002 Sienna owners.
Why is the clutch on my Toyota 4Runner not working?
Make and Model > Toyota > 4Runner > AC compressor clutch won’t… If the AC compressor clutch won’t engage on your late model Toyota and you find a B1479 Flow Control Circuit trouble code stored, the problem is usually a bad flow control sensor. Toyota uses the AC flow control sensor to detect the amount of refrigerant flow through the compressor.