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Model specific boards => Golf mk4 => Topic started by: Cuddy on 10 December 2017, 15:59

Title: Heaters and temp gauge
Post by: Cuddy on 10 December 2017, 15:59

Hi everyone

My temp gauge sits at 90 at idle(heaters are hot) but drops when driving(heaters go cold)
I have changed the timing belt water pump & thermostat & coolant sensor with vw parts but it's still the same 😠 the car doesn't overheat

Thanks mark

Title: Re: Heaters and temp gauge
Post by: itavaltalainen on 10 December 2017, 16:50

Replaced the housing?

Does radiator hose get warm before it reaches mid-80s (read measuring blocks with VCDS as gauge is not linear).

Title: Re: Heaters and temp gauge
Post by: Cuddy on 10 December 2017, 16:59

Sorry I forgot the to say the housing was replaced at the same time. The radiator hose get warm as they should do but I don't have vcds thanks

Title: Re: Heaters and temp gauge
Post by: itavaltalainen on 10 December 2017, 17:03

Radiator return hose should NOT get warm until engine has heated up to around 85-90 degrees. If it does before then I would think thermostat is still duff, happens quite often. Get one from Behr.

Title: Re: Heaters and temp gauge
Post by: sharki786 on 22 December 2017, 19:37

Was this a genuine thermostat or after market? As the after market1s are bogus

Title: Re: Heaters and temp gauge
Post by: Wazzzer on 23 December 2017, 19:48

Just as a side note VW don't make thermostats so a "genuine" thermo is still made by another company. I have used a Meyle thermostat in mine after the original failed and after 3 months of driving, so far so good