Air Conditioning Repair

FREE Car Air Conditioning Repair Question and Answers

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According to Technician A, when the condenser airflow is restricted, both the high and low lines are under high pressure. When the pressure is low on both the high and low sides, according to technician B, this is a sign of low refrigerant. Who is correct?

Correct! Wrong!

Explanation:
Both technicians are on the right. Toyota courtesy

The following facts about an air conditioning performance test are all true, EXCEPT for

Correct! Wrong!

Explanation:
You should run the AC system in FRESH mode rather than RECIRC mode to prevent evaporator stink.

Which of the following issues will result in the various gauge readings depicted in the illustration?

Correct! Wrong!

Explanation:
A refrigerant overload or a condenser with restricted flow is indicated when both the low and high sides are high. Toyota courtesy

Which of the following circumstances is most likely to result in a car overheating?

Correct! Wrong!

Explanation:
Because any limitation in the cooling system will cause an engine to overheat, a clogged radiator is the most likely culprit.

The engine may run excessively cold, according to Technician A, if the thermostat is broken. The thermostat can generate a pinging or pounding noise if it is jammed closed, according to technician B. Who is correct?

Correct! Wrong!

Explanation:
The technicians are both correct.

The technician observes that the compressor output is warm when testing the performance of the air conditioner. This is a typical condition, according to technician A. The air conditioning system, according to technician B, is overcharged. Who is correct?

Correct! Wrong!

Explanation:
The technician in A is right. Technician B is incorrect because an overcharge will result in a chilly compressor outlet.

If the condenser fan wasn't working, what high-side and low-side pressure gauge readings might a technician discover?

Correct! Wrong!

Explanation:
A high high-side and high low-side reading can be brought on by an inactive condenser fan.

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