CarTalk.com Best of Deals Car Reviews Repair Shops Cars A-Z Radio Show

Squeaking A/C

I had a blown head gasket replaced on my Civic last month and since then I’ve noticed a chirping noise every time I turn on the A/C and about every 18 seconds thereafter. Sometimes there’s a longer, louder squeal, too.

Does that sound like a belt issue or an expansion valve problem or something else entirely? Will it hurt my car to keep driving it like this? And could it be related to the replaced head gasket?

Thanks!

I had a similar situation on my car – that is, belt squeal when I used the A/C. I dreaded a seized compressor. It turned out to be just a loose belt. Giving it the proper tension cured the problem. Dunno about your car, but start with the belt.