T3.1.6 td overheating? |
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julian67
Yardie Joined: 18 Apr 11 Status: Offline Points: 271 |
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Posted: 23 May 18 at 19:59 |
I have a blinking red light on my temp. Gauge which i think means overheating.the,top up tank is at the correct level but after checking the expansion tank i found it low almost empty. No leaks.fitted new fan belt then.I refilled expansion tank with pink coolant and drove 250 kms with no flashing temp red gauge light. Then it came on again.checked top up tank which was ok but coolant was cold whereas expansion coolant was hot disconnected the small top up hose to expansion tank and blew into it. Not blocked. Any ideas on why this overheating is happening? Coolant is vw approved and recently changed. There is and outer + inner pulley above sump where fan belt attaches. Should fan belt fit on outer or inner bottom pulley? Many thanks
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Chops
Groupie Joined: 07 Dec 09 Location: Bristol Status: Offline Points: 230 |
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You checked the hose but did you check the cap on your hot water tank? I.e. the blue or black cap?
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Pete Westy
Yardie Joined: 16 Aug 07 Location: Under the van Status: Offline Points: 582 |
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See my post mid April on how it all works
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Pete
I've spent so much time under the Atlantic I'm changing my name to Titanic. |
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mattm123
Groupie Joined: 14 Jul 17 Location: Guildford Status: Offline Points: 69 |
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I had exactly the same issue, my overflow tank was fine but the expansion kept dropping, doing all the reading and a bit of panicking I eventually checked the blue cap on the premise that if the expansion tank isn't holding pressure then the coolant is basically boiling off and is then not drawn back.
Anyhow with the blue cap i could just, if I squeezed my butt cheeks together, suck at through it. so I figured this was maybe enough to cause the problem. 1 new £5 cap and for good measure £2 for a new length of hose to go between the cap and the overflow from brickwerks and problem solved/panic over |
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julian67
Yardie Joined: 18 Apr 11 Status: Offline Points: 271 |
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Hi Matt and others,
Many thanks. I took off the blue cap and cleaned it. No tensing them glutes needed now! Will replace the blue cap on my return. Cheers |
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