Water flange with temp sender on. - Page 2

mikes2 · 11-04-17, 07:22 PM

I wouldn't recommend attempting to take the flange off.

Slide back the rubber boot. Undo the wiring plug first.

The sensor just unscrews - 29mm socket / spanner.

Duffy3074 · 11-04-17, 07:33 PM

Yep no need at all to remove the flange

Just a world of hurt that way if it goes wrong

Crossle · 19-04-17, 07:53 AM

Sorry, maybe a stupid question but I'm no mechanic! Do I need to drain the water to change this part?

Duffy3074 · 19-04-17, 08:10 AM

just the sensor?

No, a small amount will come out but not enough to justify draining it, just have the new part good to go straight in.

Needless to say, do it with the engine cold

John. · 19-04-17, 08:13 AM

Quote:

Originally Posted by Crossle

Sorry, maybe a stupid question but I'm no mechanic! Do I need to drain the water to change this part?

No just have the new one ready to go in, as Royston said get the fuel pipe out the way.....with the dipstick removed make sure the tube is covered/blocked so you don't get petrol down there!
Hopefully you'll only lose a small amount of coolant as you swap the part but worth while after it's fitted raising the expansion tank and loosen the heater and rad bleed points to get any air out.......you'll likely need to top up a little.

Crossle · 21-04-17, 07:42 AM

Great info thanks very much

11-04-17, 07:22 PM	#11
mikes2 4 ring whore! Classic Audi Club Member Join Date: Nov 2007 Location: Polmont Posts: 2,617	I wouldn't recommend attempting to take the flange off. Slide back the rubber boot. Undo the wiring plug first. The sensor just unscrews - 29mm socket / spanner. __________________ 1991 90 quattro 20v sport 1991 90 quattro

11-04-17, 07:33 PM	#12
Duffy3074 4 ring whore! Classic Audi Club Member Join Date: Aug 2015 Location: Dalgety Bay, Fife Posts: 2,142	Yep no need at all to remove the flange Just a world of hurt that way if it goes wrong

19-04-17, 07:53 AM	#13
Crossle Grown up member Classic Audi Club Member Join Date: Jul 2015 Location: northampton Posts: 266	Sorry, maybe a stupid question but I'm no mechanic! Do I need to drain the water to change this part?

19-04-17, 08:10 AM	#14
Duffy3074 4 ring whore! Classic Audi Club Member Join Date: Aug 2015 Location: Dalgety Bay, Fife Posts: 2,142	just the sensor? No, a small amount will come out but not enough to justify draining it, just have the new part good to go straight in. Needless to say, do it with the engine cold

21-04-17, 07:42 AM	#16
Crossle Grown up member Classic Audi Club Member Join Date: Jul 2015 Location: northampton Posts: 266	Great info thanks very much