Lost "heat" in testarossa?

Most likely you've got an air lock in the heater system so you need to find a way to shift it. I'm not familiar with the Testa but if its like a 308/328 you may find heater pipes and mabe heater matrix(es) in the front bonnet area. Disconnecting a pipe there (carefully!) can be a good way to evacuate air from the system. You should be able to do this with the engine off.

You may not get it all, but you should get enough to start the water circulating. Once you have it going you'll need to bleed the system again (and maybe top up the coolant) because chances are you will shift more air out the heater system which will end up somewhere else (radiator etc) and need to be evacuated.

Other possibility is a stuck heater valve of course. Switch the ignition on and see if you can hear it moving when you operate the control.

I.

 

Well, if you are lucky it may clear itself if you open the heaters up and go for a high speed blast. If you do manage to shift it this way take it easy as soon as you feel heat coming through because the air will have moved to somewhere else in the system. If it won't shift then, as I suggested, you need to find a handy hose that you can disconnect to let some air out the system.

I.

 

It happened with mine exactly as you describe. Here is wah fixed it.

Warm the car up, turn the heater on, go for a drive involving a few runs up to high rpm. Recheck coolant level in th eexpanion tank the next day. This sequence fixed mine in short order.

Tony

 

A really quick way to check if it is a circulation problem is to start your engine and let it run for a little while to get up to temp. Feel the coolant hoses before and after they enter the engine.. Like the inlet and outlet hoses to see if they are close to the same temp. Also feel the stiffness of the hoses.. They should feel harder if the coolant is flowing properly but very soft if its not. Very noticeable.

 

Coolant leak or air lock blocking flow to heater core. Coolant is below heater core or Air blocked. If AC goes in a TR it's a *****. AC line runs through gas tank and uses it for a heat sink.

 

Great - now check the coolant level & re-bleed the system - the air from the airlock just went somewhere else (either a radiator or the expansion tank usually).