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Q:

replaced the iac valve due to idling problem. the car runs great. on 1999 Toyota Avalon

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
But the car will start irratic idling/stalling every once in a while! like once a week
(2) Answers
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YOU MAY HAVE OTHER ISSUES CK AND POSSIBLY CLEAN YOUR THROTTLE BODY THAT MAY HELP. ALSO YOU MAY HAVE COOLANT BLOCKAGE IN SUPPLY OR RETURN LINE AT IAC
It could be several other things. It needs to be linked into a scan tool that can check over all the PIDs and see what is going on while it is in fault mode. We can take a look at it for you if you would like. Just let us know (919)730-9105 YMTLLC.com
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