Need help, 1994 twin turbo water pump is good, rad is good, car is overheating tranfering fluid from rad to resivour, have had both caps replaced. What do ya think???? Hope someone can help car has 94,000 K's
Joao

 

have you pressure tested the cooling system?

There is a chance that this is being caused by bad O-rings in the engine which let hot exhaust gases come in contact with the coolant which makes it overheat.

Also try replacing the thermostat, it might not be opening all the way.

Brian

 

Thermostat gets my vote.