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AC not working on low speed

RAM PRATAP

MEMBER
2016 HYUNDAI I10
1.2L
2WD
MANUAL
67,000 MILES

AC is working fine when rpm reach 2000 or above but when it is on idle speed AC cooling is negligible. Refilled with Freon top-up fan is working checked whole electrical system. No other faults found. Mechanics are saying that it need compressor replacement. Please suggest the other way.

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Saturday, May 27th, 2017 AT 11:40 PM

3 Replies

STEVE W.

MECHANIC
13,158 POSTS

Get the AC pressures checked at idle and higher rpm. It could be low or overcharged, or a weak compressor.

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Sunday, May 28th, 2017 AT 7:14 AM

RAM PRATAP

MEMBER
2 POSTS

Thanks Steve. Got to know compressor is weak. Can someone guide how compressor be troubleshoot.

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Sunday, May 28th, 2017 AT 8:01 AM

STEVE W.

MECHANIC
13,158 POSTS

Put a gauge set on it, then watch the pressures as engine rpm rises. A weak compressor will show as low pressure until it revs up.
Not hard to change on most vehicles.

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Sunday, May 28th, 2017 AT 6:57 PM