What do people think is the cause for the coolant temperature to quickly go down, as reported by the dashboard guage, when my 99 NSX is going downhill? Specificly, this is the northern end of the Ortega highway in SoCal, going northbound, approaching Lake Elsinore. I've tried this twice under different outside temperature conditions, and it does exactly the same thing.
I'm quite sure it's due to actual tilt of the car, and not due to engine idling. On level road, regardless of vehicle speed or engine load, the temperature guage shows a steady reading, at one mark below mid-point. The guage may not be touching water when it shows a low reading.
Is this caused by air bubbles in the cooling system? The expansion tank is almost full.
Is the system able to clear the bubbles out by itself, by design of the expansion tank?
The coolant level is not dropping after driving hundreds of miles.
Are there any tricks to filling up the coolant to make absolutely sure that no air bubbles are in the system? I see from the service manual that there are four bleed plugs/bolts, and that one of them has to be loosened twice to fully fill the system.
My first car was a 85 MR2, and one of its worst problems was the cooling system keeping air bubbles inside. I suppose this applies to all mid-engine cars.
I'm quite sure it's due to actual tilt of the car, and not due to engine idling. On level road, regardless of vehicle speed or engine load, the temperature guage shows a steady reading, at one mark below mid-point. The guage may not be touching water when it shows a low reading.
Is this caused by air bubbles in the cooling system? The expansion tank is almost full.
Is the system able to clear the bubbles out by itself, by design of the expansion tank?
The coolant level is not dropping after driving hundreds of miles.
Are there any tricks to filling up the coolant to make absolutely sure that no air bubbles are in the system? I see from the service manual that there are four bleed plugs/bolts, and that one of them has to be loosened twice to fully fill the system.
My first car was a 85 MR2, and one of its worst problems was the cooling system keeping air bubbles inside. I suppose this applies to all mid-engine cars.
