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Chat Area => General Car Chat => Topic started by: polilara on 24 November 2024, 09:18:11

Title: Astra J 2010 A16XER Still Minor Coolant Leak in a Strange Place
Post by: polilara on 24 November 2024, 09:18:11: Hello all

Daughter's Astra J have still a minor coolant leak behind the thermostat housing. Housing is a plastic part screwed to cylinder head. The thermostat with its "cover" is screwed to this housing. I do not know the right terms for these parts but if you look at the fig. below you can see red arrow showing to small red drop in rear part of this housing. Coolant seem to come behind the electric connector. Connector is locked fom top side with iron clip which I can remove. I guess the connector is connected to temp. sensor. I am afraid that the sensor is built in to housing so I have to replace the whole part?

Any tips/experience or do we have to wait that 'dave the builder' will pop in...

(https://i.postimg.cc/zvr4m9bL/Liitinvuoto.jpg)
Title: Re: Astra J 2010 A16XER Still Minor Coolant Leak in a Strange Place
Post by: countrywoman on 24 November 2024, 09:55:38: Pull the clip and sensor should pull out, there will be an O ring seal.
Title: Re: Astra J 2010 A16XER Still Minor Coolant Leak in a Strange Place
Post by: polilara on 24 November 2024, 10:47:55: Ok, thanks, I was stupid, I do my best. Do anyone have part number for sensor or even O-ring available? Or size
Title: Re: Astra J 2010 A16XER Still Minor Coolant Leak in a Strange Place
Post by: Doctor Gollum on 24 November 2024, 17:34:53: Quote from: polilara on 24 November 2024, 10:47:55
Ok, thanks, I was stupid, I do my best. Do anyone have part number for sensor or even O-ring available? Or size
It will be part of the new sensor. But...

It may be weeping because the housing has cracked.
Title: Re: Astra J 2010 A16XER Still Minor Coolant Leak in a Strange Place
Post by: polilara on 24 November 2024, 18:19:53: Thanks DG, actually what you said was what I was afraid of. Let's see, car needed tomorrow so I did not do anything, spare part I ordered (original GM) comes on Tuesday. Then I know. If whole housing needed perhaps middle price part from Autodoc will fulfil or what do you recommend?
Title: Re: Astra J 2010 A16XER Still Minor Coolant Leak in a Strange Place
Post by: Doctor Gollum on 24 November 2024, 18:25:49: I would be selective on supplier. And replace the lot.

If one part is failing, the rest won't be far behind.
Title: Re: Astra J 2010 A16XER Still Minor Coolant Leak in a Strange Place
Post by: polilara on 24 November 2024, 18:38:37: Yes, next part is the cyl head...
Title: Re: Astra J 2010 A16XER Still Minor Coolant Leak in a Strange Place
Post by: Doctor Gollum on 24 November 2024, 20:32:14: Quote from: polilara on 24 November 2024, 18:38:37
Yes, next part is the cyl head...
I meant the plastic bits ;)
Title: Re: Astra J 2010 A16XER Still Minor Coolant Leak in a Strange Place
Post by: polilara on 26 November 2024, 18:45:40: Original spare installed, housing (plastic) seemed ok at least when cold, no leaks after short trip, let's see in long term.