Problem is Chronic-Intermittent Overheating- (to boil-over and coolant loss)
Not related to grade,load or ambient temp.
When overheating occurs-fan(s) do not cycle on.
Observing gauge as temp. starts to rise - quick application of Auto or AC temp control gets fans operating and restores temp to normal-until next intermittent occurence. This seems to control the situation.
No coolant leaks.
Compression holds.
Pressure tests good.
Radiator re-cored and hoses good.
New radiator cap.
Thermostat and thermosensor - new.
Neither oil or coolant is contaminated.
No loss of coolant.
Completely blocking and restricting air flow to radiator does not trigger condition - remains normal.
Overheating could just as easily occur while coasting down a hill on a cold day !! Is there a sensor or ? that speaks to the fans as coolant heats up - perhaps suffering an intermittent glitch?
Thanks for any help you can provide.
One hour of Acura Dealer's Time -Unproductive. Bob
Not related to grade,load or ambient temp.
When overheating occurs-fan(s) do not cycle on.
Observing gauge as temp. starts to rise - quick application of Auto or AC temp control gets fans operating and restores temp to normal-until next intermittent occurence. This seems to control the situation.
No coolant leaks.
Compression holds.
Pressure tests good.
Radiator re-cored and hoses good.
New radiator cap.
Thermostat and thermosensor - new.
Neither oil or coolant is contaminated.
No loss of coolant.
Completely blocking and restricting air flow to radiator does not trigger condition - remains normal.
Overheating could just as easily occur while coasting down a hill on a cold day !! Is there a sensor or ? that speaks to the fans as coolant heats up - perhaps suffering an intermittent glitch?
Thanks for any help you can provide.
One hour of Acura Dealer's Time -Unproductive. Bob
Sep 28, 2007 at 2:31 PM