91 Kade overheating

[smokedout240]

I just changed the water pump and thermostat hoping it would solve the problem... but it didnt. When I drive my car will overheat the needle will go up all the way past hot. then after a couple minuted it will drop all the way back down to where it normally runs. Can anybody tell me if there could be something wrong like a head gasket or it could be as simple as air bubbles in the cooling system?

[projectRDM]

You sure the sender and gauge are both good?

If so, it's an air pocket.

[smokedout240]

Im not sure if the sender or guage are good how would I check to see if the are good? and if it is an air pocket how do i get it out of the system?

[umsports]

Sounds like an air bubble. You need to burp the coolant system to get the air out of it.

[coww-cho!!!!!]

when this happened to me it was because i didnt bleed it thoroughly so definitely put that on the check list.

[lilrusty]

burp your baby!! sounds like trapped air to me. or in the long run might be temp sensor to gauge.