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2005 Dodge Caravan surgese constantly

What should I do when my dodge caravan is surging constantly especially when you slow down or stalk in traffic. I have taken it to two different mechanics and they could not tell the cause. please help

I had this happen to my 05 Town and Country. I don’t remember if it threw a code, but I don’t think it did. My wife drove it and said it almost threw her into the highway as she approached a stop sign. It wasn’t that bad, but it surged tremendously when I test drove it. I removed the throttle body, took all sensors off the throttle body, used throttle body cleaner and rag and thoroughly cleaned throttle body. Worked like a charm.

I would look at replacing the IAC (Idle air Control.) valve.

https://www.rockauto.com/en/catalog/dodge,2005,caravan,3.3l+v6,1430645,fuel+&+air,idle+air+control+(iac)+valve,6072

Yosemite