Thread: Engine Coolant Temp Fluctuating

The way I bled it out was by leaving the radiator cap open, bleeding it, and then filling it the rest of the way. Then filling the resevoir.

Ok, minor issue. After replacing the thermostat I can't seem to get the air out of the system. Ends up boiling out of the cap neck before the bleed screw ever has a constant flow of coolant. Any bright ideas for how else I could get the air out of the system without having to fill directly from the thermostat area. I put the RTV sealant around that housing, so I'd like to avoid taking that off and redoing that process if at all possible. Thanks for any pointers.

you are using the bleeder screw on top of the t-stat housing right?

i leave the rad cap off, let the car idle till the fans come on, that way you know the t-stat opened up, top off rad if needed, loosen the bleeder screw, keep open till a stream of coolant comes out, shut screw, top off rad, cap it.

That's pretty much what I did the first time i did it. Maybe I'm opening up the screw too early. I'll try it out tomorrow with keeping the screw tightened till the fans kick on. See how that works.