As per title really. I had to re-wire the plug for my fan switch in my radiator, and I'm now wondering whether it's working ok.

 

Car isn't on the road until Friday, but I tried to heat it up until it came on this evening. I got to 92 degrees in VCDS and no kick-in, but literally couldn't get it any warmer whilst stationary in the cool ambient temps.

 

So does anyone know what the actual temperature is that the radiator fan is meant to kick-in on in VCDS please?

 

Thanks

The low-speed thermoswitch has a 95°C switch-on point, but its location near the bottom of the rad means that coolant temperature as seen by VCDS via the CTS will be a little higher than that before you should expect fans to start up.

Fantastic! Thank you very much for the info.

 

I'll just have to run it on the road and keep an eye on the temps.

Was around 96 on VCDS before the fan kicked in on mine. Dropped to 89 before they turned off. On the move it sits at 90 constantly unless hammering it

 

Rather easier to get those temps static on a petrol

Yeah I just couldn't get it over 92! I have launch in the map, so could possibly manage to get it higher revving it more with the other soft code enabled on the map.

 

Don't fancy gassing myself though, as it's still in my unit ha ha!

You are getting the coolant up to temperature until the thermostat opens and the coolant flows,

but you are a long way / time from getting the oil hotter than the Coolant, and then the coolant needing to cool the oil.

 

A petrol car (engine) might get the coolant hot and the oil hotter a bit quicker, 

but even then it takes a long time if you are starting off in ambient temperatures like you might be experiencing in the UK,

ie under 20*oC Ambient.

(a 1.4 TSI vRS petrol might take 5-6 miles of driving at 60 mph before it even gets to an Indicated & actual 50*c Oil temp,

yet the Coolant was a 90*oC in 2-3 minutes of starting. you could drive all day and the oil might never go above 90*oC

and the Coolant Fans never need come on because the coolant was at a good operating temperature.)

 

 

So basically cars sitting ticking over or even with some RPM is a slow way to get Oil & then Coolant up to 95*oC Plus.

George, if you're using a normal keyboard with a numeric keypad, you can type a proper degree (°) symbol by holding down the "Alt" key, then typing 0176 on the numeric keypad numbers.

Didn't have much choice than to try it whilst stationary at the minute, considering the car is on axle stands still!!

 

I'll get it hot on the road and see what happens. It should be fine anyway, as it's just a new plug soldered into the loom as a direct replacement.

Sorry OT.

Wino i am on a normal keyboard, only it is in Hungarian and i can not use it, (can not change it)

so hey ho, no worries.

You are getting the coolant up to temperature until the thermostat opens and the coolant flows,

but you are a long way / time from getting the oil hotter than the Coolant, and then the coolant needing to cool the oil.

 

A petrol car (engine) might get the coolant hot and the oil hotter a bit quicker, 

but even then it takes a long time if you are starting off in ambient temperatures like you might be experiencing in the UK,

ie under 20*oC Ambient.

(a 1.4 TSI vRS petrol might take 5-6 miles of driving at 60 mph before it even gets to an Indicated & actual 50*c Oil temp,

yet the Coolant was a 90*oC in 2-3 minutes of starting. you could drive all day and the oil might never go above 90*oC

and the Coolant Fans never need come on because the coolant was at a good operating temperature.)

 

 

So basically cars sitting ticking over or even with some RPM is a slow way to get Oil & then Coolant up to 95*oC Plus.

It's pretty easy to get the oil temp higher than the coolant tbh with these GTB turbos and 2.5bar of boost

While stationary?

While stationary?

While stationary?

2.5 bar of boost stationary?

Pretty obvious I was referring to while being driven,sorry if it wasn't.