are all mk3 polo 1.3 thermostats the same and the only difference for the gt is the rubber seal?
also how do i test one once i have taken it out? i have dropped it in hot water but nothing happened to the old or new one?? how do you know if its that that has gone?
thanks for your help - trying to sort it now but not sure that its the thermostat thats gone - looks clean and not gunged up. is there any way of testing the temp sendor while im looking at it?
thanks
jo
thermostat help please
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Never done it myself because my old one was obviously screwed, but the prescribed method is: (if you shall allow me to plagiarise from my brother's Opel Kadett (!) Autodata manual)
Get a pencil, some string, a deep saucepan (not necessarily wide - needs to be narrower than the pencil is long), and a couple pints of water. Oh, and a cooker hob.
Work out your own arrangement for dangling the thermostat into the pan by it's outer housing using the string (best to tie it around the "nose" of the thermo?) connecting to the pencil, bridged over the rim. Add enough water that the thermostat is nicely covered.
Water must not be in danger of overtopping, and thermostat not contacting the bottom.
Put contraption on hob and apply heat. Thermostat should move from a fully shut position (hopefully) when cold, to a noticably different open one JUST before the water begins to boil. And similarly close back up as it cools (as I don't know if it's safe for it to be carrying out such movement dry, I'll just-for-now reccomend you leave it in the water with the heat turned off)
For added class, you can add a 0-100'C thermometer and lift the thing out of the water using the ends of the pencil at various points to see what it's doing, say, 75, 80, 85, 90, 95, 100 degrees. Refer to a haynes or something to see when it should be opening / closing. (I would say, but mines buried ATM)
Get a pencil, some string, a deep saucepan (not necessarily wide - needs to be narrower than the pencil is long), and a couple pints of water. Oh, and a cooker hob.
Work out your own arrangement for dangling the thermostat into the pan by it's outer housing using the string (best to tie it around the "nose" of the thermo?) connecting to the pencil, bridged over the rim. Add enough water that the thermostat is nicely covered.
Water must not be in danger of overtopping, and thermostat not contacting the bottom.
Put contraption on hob and apply heat. Thermostat should move from a fully shut position (hopefully) when cold, to a noticably different open one JUST before the water begins to boil. And similarly close back up as it cools (as I don't know if it's safe for it to be carrying out such movement dry, I'll just-for-now reccomend you leave it in the water with the heat turned off)
For added class, you can add a 0-100'C thermometer and lift the thing out of the water using the ends of the pencil at various points to see what it's doing, say, 75, 80, 85, 90, 95, 100 degrees. Refer to a haynes or something to see when it should be opening / closing. (I would say, but mines buried ATM)