Hi. I also found sort of same problem. I have a Nissan Sentra 1994 and the rpm after pushing brake was going really low. So I just 2 days ago disassembled the idle air control valve and sprayed it 6 times with CRC. now rpm is more than 1500!
I guess because that valve has electric circuit , CRC shouldn’t be sprayed on it and maybe I have damaged the valve with CRC…Any comment or thought please? thank you