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Chris00007
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Fan not turning off

Postby Chris00007 » July 10th, 2021, 1:41 pm

So I put in a thermostat in the Y12 (didn't have one) and I realise the top radiator hose getting rell hot but the bottom hose barely hot.

Also, the fans coming on at full speed after about 10 minutes of idle and it seems to not be cutting off. I waited like 10 minutes and it still on....

Thoughts?

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Big Z
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Re: Fan not turning off

Postby Big Z » July 11th, 2021, 3:37 pm

Thermostat not opening. Either thermostat faulty or the coolant system needs to be properly bled

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viedcht
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Re: Fan not turning off

Postby viedcht » July 11th, 2021, 4:39 pm

Chris00007 wrote:So I put in a thermostat in the Y12 (didn't have one) and I realise the top radiator hose getting rell hot but the bottom hose barely hot.

Also, the fans coming on at full speed after about 10 minutes of idle and it seems to not be cutting off. I waited like 10 minutes and it still on....

Thoughts?
In my experience after changing out radiator hoses I had that experience. Usually that behaviour is observed only on startup... If you drove it for some time and it still behaved like this, then its probably what Big Z suggested.

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wagonrunner
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Re: Fan not turning off

Postby wagonrunner » July 11th, 2021, 4:47 pm

check water pump.
let it cool, open radiator,
Start engine and rev, see if radiator is overflowing, water flow increasing.

a firend experienced what you are describing after a "mechanic" in central sourced and supplied a heand and block for a vehicle.
This was the waterpump. ended up taking back the old block after he cannibalized it, and rebuilt that.
Image

Chris00007
3NE 2NR for life
Posts: 128
Joined: October 23rd, 2018, 8:12 pm

Re: Fan not turning off

Postby Chris00007 » July 12th, 2021, 12:35 pm

Thanks for the reply fellas. The cooling system was water locked. Just bled it properly and now all is well

Chris00007
3NE 2NR for life
Posts: 128
Joined: October 23rd, 2018, 8:12 pm

Re: Fan not turning off

Postby Chris00007 » July 13th, 2021, 1:44 pm

Chris00007 wrote:Thanks for the reply fellas. The cooling system was air-locked. Just bled it properly and now all is well

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