Originally Posted by mk378
You guys are all the reverse of the typical car owner who comes to a forum convinced up and down that there is no way my head gasket could be bad.
To review, as a doctor would say, the "presenting symptom" was overheating while idling for a long wait in a drive-thru line. If further questioning can differentiate it down to overheating only when the car is not moving, the radiator fan system is the primary suspect.
You didn't read through the posts. A few posts above: "Good news on the fans. With the cab blower fan on, they run."
Its possible its a coolant temp fan switch, so I would just idle until early signs of overheat without blower on. If fan doesn't come on research if your vehicle has a switch or relay or what.
There was also troubleshooting presented to rule in/out Head Gasket issue, which still seems like a very likely cause.
You guys are all the reverse of the typical car owner who comes to a forum convinced up and down that there is no way my head gasket could be bad.
To review, as a doctor would say, the "presenting symptom" was overheating while idling for a long wait in a drive-thru line. If further questioning can differentiate it down to overheating only when the car is not moving, the radiator fan system is the primary suspect.
You didn't read through the posts. A few posts above: "Good news on the fans. With the cab blower fan on, they run."
Its possible its a coolant temp fan switch, so I would just idle until early signs of overheat without blower on. If fan doesn't come on research if your vehicle has a switch or relay or what.
There was also troubleshooting presented to rule in/out Head Gasket issue, which still seems like a very likely cause.