Alltrack operating temp

[Mc_Gusto]

Hi guys

I am now the happy owner of a 2013 Alltrack

I was wondering how long these cars typically tame to get to operating temp. On the freeway the other day it was fine, however this morning I fired her up, idled for a few mins and took her for a short drive <5kms but prob 10 mins on the road and the temp gauge was still very low, almost hadn’t moved
Is this normal - I’ve not had a tdi before so wasn’t sure if it is common for diesels to take longer?

Heating and all that was fine.

Thanks

[Guest001]

My TDI took about 5-10mins to get to normal temp of 90Deg. After I had the timing belt and water pump done I had a similar occurance Temp actually dropped while climbing a hill.
Solution get it hot, when you park in the garage take the cover off the coolant reservoir listen for air coming up. Leave till next day and see if it happens. There is also a thermostat on top of the transmission that can cause that.

I bought one thinking I needed it and didnt so its in the cupboard Cost $50

[Mc_Gusto]

I think it’s all good! Bit of noob! It was cold this morning I think she just needed a bit more time!

[iampivot]

Check the digital readout in the MFD. On my my13 passat the digital oil temperature shows higher temperatures much faster than the analogue gauge.

[Mc_Gusto]

Question - what should the oil running temp be - what range should I expect?

[brad]

Question - what should the oil running temp be - what range should I expect?

it's very dependent on the ambient temperature but up to 120c is normal, even higher if you are having a crack, long uphill or towing.

My recommendation is not to look at it. It's full synthetic oil and very tolerant of high temperatures.

[Mc_Gusto]

Thanks

I was more interested if it was at the lower end. Yesterday it was around the 83 degree mark after 30 odd minutes in the freeway and the thermostat was prob around 70. Mind you it was cold out (8 degrees) and I hadn’t driven the car for over 2 weeks
On the way home the thermostat sat at 90 and the oil temp 93-98

I think it’s all ok

[brad]

Thanks

I was more interested if it was at the lower end. Yesterday it was around the 83 degree mark after 30 odd minutes in the freeway and the thermostat was prob around 70. Mind you it was cold out (8 degrees) and I hadn’t driven the car for over 2 weeks
On the way home the thermostat sat at 90 and the oil temp 93-98

I assume thermostat = water temperature?

Even at 8c it should be sitting on 90 after about 15 minutes as the thermostat should remain closed until NOT is reached. If the gauge is reading low then I'd suspect the thermostat is opening early or partially stuck open.
NB: VW water temp gauges are designed to sit on 90. That reading actually means anywhere between ~80-~100

[Mc_Gusto]

Interesting thanks and yes meant the temp gauge

It was def oscillating lower than that yesterday but today was normal eg on 90

I’ll keep an eye on it

[Mc_Gusto]

Ok

So it happened today, quite strange behaviour and probably one for the mechanic but I thought I’d pass it by you experts anyway!
So outside air temp 13 degrees. ~30 mins drive time on freeway at 100km/p/h.
Oil temp running at approx 85 degrees
Temp gauge oscillating between 75 and 90. Literally would get up to 90 and then drop again?!?! Also noticed it dropped when I went down a hill!
Anyway I normally deactivate the start / stop but when I reached an off ramp I decide to see whether turning the car on and off effected it. So activated start stop and when the car turned back on the temp gauge went to 90 as it should and stayed there?!!!?
Oil temp digital read out still at 83-85
Any ideas / clues based on what I’ve shared?!

[Guest001]

Ok

So it happened today, quite strange behaviour and probably one for the mechanic but I thought I’d pass it by you experts anyway!
So outside air temp 13 degrees. ~30 mins drive time on freeway at 100km/p/h.
Oil temp running at approx 85 degrees
Temp gauge oscillating between 75 and 90. Literally would get up to 90 and then drop again?!?! Also noticed it dropped when I went down a hill!
Anyway I normally deactivate the start / stop but when I reached an off ramp I decide to see whether turning the car on and off effected it. So activated start stop and when the car turned back on the temp gauge went to 90 as it should and stayed there?!!!?
Oil temp digital read out still at 83-85
Any ideas / clues based on what I’ve shared?!

Dont worry about oil temp I wouldnt ever have a clue what it is. Its got oil in it let it do its job.

Sounds like an air lock in the cooling system

Water temp can be problematic Read reply 2 and do what I said and see if it gurgles and farts. As I said there is a thermostat above the tranny which has been known to give problems and I bought one and havent used it. as burping fixed it.

I have sold the car and still have the valve which cost $50 from Lithuania (dont know cost here) and easy to fit it thats the problem. Is instructions on Youtube
Part no is VW1KO 121 113A if you want to check

[Mc_Gusto]

Thanks hillbilly

So do I take the coolant lid off, listen for burping and leave off overnight?

What does it mean if I hear burping?

[Guest001]

Thanks hillbilly

So do I take the coolant lid off, listen for burping and leave off overnight?

What does it mean if I hear burping?

Turn motor off loosen coolant bottle lid Dont take it right off for a start as is pressured a bit Wait for a while and see if it burps and if it does means it has air in system. Leave it off over night Cured mine.
Next step would have been to change that thermostat.. I was going up a steep long hill and water temp showed about 60 so alarm bells started ringing in my head LOL

[brad]

Thanks hillbilly

So do I take the coolant lid off, listen for burping and leave off overnight?

What does it mean if I hear burping?

It means there was an air lock and the air is burping out of the system.

there are 4 possible causes to your symptoms.
1) airlock
2) thermostat
3) faulty water temp sender
4) faulty gauge
5) something else ;-p

[Guest001]

It means there was an air lock and the air is burping out of the system.

there are 4 possible causes to your symptoms.
1) airlock
2) thermostat
3) faulty water temp sender
4) faulty gauge
5) something else ;-p

Yep first two are recurring in the Passat especially if anything done on the cooling system