2011 Vauxhall Zafira 1.8 petrol elite Expansion tank boiled over, water leaks

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lee wood
Fixes: 4
Problem added: Nov 7, 2016 (3 years ago)
about a month ago all the coolant boiled over out the expansion tank i initially thought head gasket had blown however after letting engine go cold and refilling with coolant evrything appeared normal, i let car tick over for an hr or so , fan kicked in and all was normal, oil clean water clean no bubbles etc, ive done a 1000 miles since then oil still clean etc levels good no problems. yesturday i drained all the coolant out and flushed system , i did this as wasnt sure of how much antifreeze was in system because of last months problem and its getting cold, i refilled coolant,let car tick over about an hour got any air out etc and went for a good drive with no problems, got to work this morning steam and water coming from water pump and a chirping noise, whats going on? is this related to earlier problem? is this because i changed coolant? could pump have been bad a while? any help many thanks

Car details
Car: Vauxhall Zafira
Variant: 1.8 petrol elite
Model Year: 2011
Category: Leaks & Noises

Recalls: Vauxhall Zafira Recalls
More: Vauxhall Zafira Problems
Parts mentioned in this problem
Replies and fixes
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whittingehame
Fixes: 12,509
Nov 7, 2016 (3 years ago)
Did you bleed the system ( often shouldn't have to ) , check and top up level when returning from drive and engine cold ?
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whittingehame
Fixes: 12,509
Nov 7, 2016 (3 years ago)
Another thought , did you have heater on hot position and hot air in cabin o.k before drive ?
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1/4drive
Fixes: 1,862
Nov 8, 2016 (3 years ago)
I'm assuming the gauge temp didn't go sky high?
What I normally do when doing coolant is once done start the engine then heater in full hot mode sit in it and run the engine at a fast idle speed say 2000 rpm and the blower onto screen demist.
Then you monitor the heat from the screen vents with your hand.
This usually get all air from the coolant system.
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lee wood
Fixes: 4
Nov 8, 2016 (3 years ago)
yes bled the system , hot air coming through heaters, all levels spot on
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turn0335
Fixes: 2
May 23, 2019 (1 year ago)
did this fix it ?????????
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