-K1 Posted June 4, 2011 Share Posted June 4, 2011 after one hour on motorway heat increase and overdrive light flashing. i've stop the car before red zone. expantion bottle was full and coolant run out the expantion bottle. i've made a search - i found a radiator cap problem do you think it will be possible? half an hour later i've open the radiator cap no pressure need help!! thanks Quote Link to comment Share on other sites More sharing options...
dude Posted June 5, 2011 Share Posted June 5, 2011 First thing to try is the rad cap, that is not connected at all to the OD light flashing. Quote Link to comment Share on other sites More sharing options...
Lude Posted June 5, 2011 Share Posted June 5, 2011 have you checked the water level & bled the system? i would try that 1st Quote Link to comment Share on other sites More sharing options...
dude Posted June 5, 2011 Share Posted June 5, 2011 have you checked the water level & bled the system? i would try that 1st If its been ok before then why would it lose water and need bleeding???????????????? because the rad cap is weak and let the water out, the full expansion tank is a result of a problem not the cause. Quote Link to comment Share on other sites More sharing options...
-K1 Posted June 7, 2011 Author Share Posted June 7, 2011 i was unable to find rad cap where i was this week end.. so i've check for air block and went home.. i will order a new rad cap thanks Quote Link to comment Share on other sites More sharing options...
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