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Model specific boards => Golf mk3 => Topic started by: Jasikasisback on 12 February 2013, 18:00

Title: does the temperature sensor need an o ring or gasket when it is changed?
Post by: Jasikasisback on 12 February 2013, 18:00

I am not sure if the temp sensor needs a gasket or o ring when changed...I just have the yellow ring (with the gap) around the temp sensor. Any help with this?

Title: Re: does the temperature sensor need an o ring or gasket when it is changed?
Post by: Screech16v on 12 February 2013, 18:02

Normaly an oring which should be supplied with the new sensor.

Title: Re: does the temperature sensor need an o ring or gasket when it is changed?
Post by: dixie180 on 12 February 2013, 18:03

Yep,should be supplied with the sensor.

Title: Re: does the temperature sensor need an o ring or gasket when it is changed?
Post by: itavaltalainen on 12 February 2013, 18:11

yup... one o-ring = 19.6 x 3.6

should come with sensor (never had one without it), when you pull old sensor out put your finger in the hole and pull the old one out too... otherwise you'll struggle to fit the new one, and if you manage you will either crack flange or it will leak ;)

Title: Re: does the temperature sensor need an o ring or gasket when it is changed?
Post by: Jasikasisback on 12 February 2013, 21:03

can't I buy the ring by itself?

Title: Re: does the temperature sensor need an o ring or gasket when it is changed?
Post by: dixie180 on 12 February 2013, 21:06

If you don't have a new one with the sensor then take the old one out and give it a good clean,should be ok, but not perfect.

Title: Re: does the temperature sensor need an o ring or gasket when it is changed?
Post by: Jasikasisback on 12 February 2013, 21:42

well the sensor itself is not new..so not really worth changing...i will change the thermostat with a new one and see if that makes a difference...:) if not then I will buy an new temp sensor and then I will give up and take it to a reputable garage to have it tested...it may be that the headgasket is gone..as it smokes a lot upon start up in the mornings...regardless of temperature...I have eliminated a lot of possible causes and will change the fuel filter, thermostat and temp sensor...after this I will give up...vagcom does not show any faults.....but hey something is wrong with her...:(

Title: Re: does the temperature sensor need an o ring or gasket when it is changed?
Post by: boneybradley on 12 February 2013, 21:55

I guess a plumbing place should have a rubber seal that will work, if needed

Title: Re: does the temperature sensor need an o ring or gasket when it is changed?
Post by: thai-wronghorse on 13 February 2013, 07:10

Mulipacks of O-rings are available from Halfrauds if the dealer doesn't have them.

Title: Re: does the temperature sensor need an o ring or gasket when it is changed?
Post by: itavaltalainen on 13 February 2013, 13:25

every VW, Audi, Seat, Skoda place will have them - 50p
would guess even Ford probably have them (since they built a few cars in cooperation)

what's the problem with the car then? just smoking when you start it?

temp sensor, why replace if not leaking and OK? I posted a diagram here so many times i cant remember where it states the values at different temps... all you need for testing is a cheap 3.99£ multimeter that can measure resistance off ebay.... :)

Title: Re: does the temperature sensor need an o ring or gasket when it is changed?
Post by: Jasikasisback on 14 February 2013, 01:04

yeah i've bought a multimeter and tested it. it seems to be working fine. fan is ok too and thermostat serms to be fine. smoke is white in the morning like a steam engine but no coolant leak that i can find and not lising coolantlosing coolant as reservoir is not losimg fluid. motor oil not overfilled, gearbox oil not overfilled. dizzy cap plugs and wires changed. battery ok but still almost chokes to death in the mornings and almost stutters out when coming to a stop but doesn't. once driven for awhile it settles down. fuel ecomony is crap was getting beween 6.8-8/100km now getting 9-11/100km. vagcom shows no faults. wonder if the caralytic converter is gone but want to know what caused it to fail. could a blocked vacuum hose cause this???i checked them a few months ago...there is no mayo in the oil, no bubbles either and the plugs weren't burnt when i changed them. i will however damage the engine most likely if i keep driving it as it is. it runs about 200-300rpm than it used to in the past. love driving it but matbe it is tellinge that it should go into retirement:(

anyone live near ascot that could have a look at it before i take it to the shop? maybe i am missing something simple...,