I don't think the auxilary fans are coming on, but I definitely feel like there might be a leak in the radiator system somewhere. Where did you get your new overflow tank? I'll also get a new cap, hopefully that can be obtained at the same place that might have new overflow tanks. Any recomendations for parts to use and where to get them? Thanks.

Is there anything that can be done with the auxilary fans? I've had troubles with these before this even happened. Basically, they rarely come on, and never when I need them, so at red lights my car heats up and traffic. But also, after driving it for a while, it heats up a lot just sitting there because the fans don't come on.