Hi,

I have been noticing that on these chilly (appx -2) mornings that Yeti seems to take a good long while for the temp needle to climb off its pin and even longer to reach normal. Similar slowness on the oil temp on the maxi dot. Prob takes about 2min of defrost running plus 5min of 60mph to budge.

Is this normal. Seems longer than my prev jalopy?

Seem some grill covers on superskoda etc..... Worth getting? risky? A saw a few discussions from a couple of years ago.... Sort of mixed opinions. Wondered if there was any new data?

Still remember tinfoil over grills of cars in the 70s.

Any thoughts?

Cheers

J

Edited 5 January, 201511 yr by crazyj

Sounds normal.

Thanks,

Reassured.

Maybe I'm feeling the cold more.... Not getting any younger!

Cheers,

John

Yep, sounds about right. Diesels take a while to warm up as there is such a mass of metal to heat up and they run 'full throttle' all the time so lots of cold air runs through them. In my opinion, grille covers and tin foil are a waste of time as the engine temperature is regulated by the thermostat. Until the thermostat is open the radiator isn't in play and the water is recirculating around the block. The exposed surface area of the engine is significantly lower than that of the radiator, so any extra cooling by cold air will not be huge. In very cold climates I could agree with it, but for Blighty not so much.

.... Not getting any younger!,,,

Don't give up!  Keep trying! 

... they run 'full throttle' all the time so lots of cold air runs through them. 

 

Is this still the case with the DPF-equipped CR diesels ?

 

I thought I remembered reading one of the self-study guides, and seeing that there is in fact a throttle; this is to reduce to amount of cold air passing through to the DPF in a bid to keep it up to temperature.

I run a mesh lower grille 365 days of the year and warm ups are slow. My friend had a mk5 golf with an electric heater....warm air within half a mile. Wish my Yeti had one.

Some VAG diesels use electrical coolant heaters - my previous Passats had them, and like 33q says, you get a reasonable amount of warmth fairly quickly.

 

Another option is to retrofit the electric air heating element, this heats the airflow from the fan. I was reading a retrofit guide somewhere the other day, the parts seem relatively easy to get hold of (although you need to run some fairly hefty cable!). With this form of heater, hot air is almost instant I believe.

You can get the engine up to temperature much quicker if you can keep the cabin heater off for five minutes.  If you need air to defrost or demist, this is no use, but I found that a lot of the time I could just turn all assisted airflow off without noticeable discomfort.  The advantage was then (with a warm engine), the cabin got warm very quickly once I turned the airflow back on.  This was with a 1.9 TDI PD Ibiza.

You can get the engine up to temperature much quicker if you can keep the cabin heater off for five minutes.  If you need air to defrost or demist, this is no use, but I found that a lot of the time I could just turn all assisted airflow off without noticeable discomfort.  The advantage was then (with a warm engine), the cabin got warm very quickly once I turned the airflow back on.  This was with a 1.9 TDI PD Ibiza.

 

Different engine, different car, although it would be worth trying it.

Hi,

I have been noticing that on these chilly (appx -2) mornings that Yeti seems to take a good long while for the temp needle to climb off its pin and even longer to reach normal. Similar slowness on the oil temp on the maxi dot. Prob takes about 2min of defrost running plus 5min of 60mph to budge.

Is this normal. Seems longer than my prev jalopy?

Seem some grill covers on superskoda etc..... Worth getting? risky? A saw a few discussions from a couple of years ago.... Sort of mixed opinions. Wondered if there was any new data?

Still remember tinfoil over grills of cars in the 70s.

Any thoughts?

Cheers

J

Same as mine. Previous 110bhp took much longer, even with a SuperSkoda grille cover, so I'm happy with the 140.

 

Fred

I guys have found especially with diesels, the more you can allow them to "warmup" at idle before driveing off.

 

The greater the long term Mileage, Fuel efficency, did double ups with "experienced Road Train Operator at Longreach Qld,Aus"

vehicle was started, we had breakfast & coffee, before Driveing off.

 

45 years @ 4+ Million km/Miles later still follow same procedure, My "Snowman" new got 530/580 Km to 50 Litres, now average 650/690.

Edited 7 January, 201511 yr by Gobmax

The trouble is it takes ages for an idling engine to warm up compared to one that is under load, especially a diesel. I agree that once warm the engine will return better economy, but at the cost of fuel burnt whilst idling.

The trouble is it takes ages for an idling engine to warm up compared to one that is under load, especially a diesel. I agree that once warm the engine will return better economy, but at the cost of fuel burnt whilst idling.

And more susceptible to oil contamination.

 

Fred 

The more economical and efficient an engine is the longer it will take to reach operating temperature.
Quickest way to get it warm is to drive off as soon as it's started and not to let it idle as stated in most if not all user manuals.

Also I think the DMF gets more wear at tickover.

Hi,

All very interesting stuff. Must confess to idling to warm up...mainly for de-icing.

Why is a diesel more susceptible to oil contamination when idling?

I may make myself a screen cover from a bit of tarp to avoid/reduce the de-icing time.

Cheers

J

Hi,

Why is a diesel more susceptible to oil contamination when idling?

I may make myself a screen cover from a bit of tarp to avoid/reduce the de-icing time.

Cheers

J

The longer an engine is running cold the more it's going to be affected by condensation and the acids that go with it.

With no load it's going to take much longer to get to a "burn off" temperature than one that is driven straight away, with care until it's warmed up fully of course.

Oh ....ok makes sense.

Ta!

J

Diesels are more thermodynamically efiicient than petrols, so less heat is being produced, and it takes an age to warm up.

 

The best thing to do is fit an electric DEFA engine block heater, and then plug the car in between 30-60 minutes before you need to leave the house; it pre-warms block and engine oil. It's easier on the engine, the battery and you. They're pretty much standard fitment on everything in the Nordics. You can even get an interior heater too, which is pretty great on a cold day. You just need an outside socket, which is also standard fitment in every Nordic house.

 

I've no idea if they're even sold in the UK but it can't be rocket science to source and install... see www.defa.com

Diesels are more thermodynamically efiicient than petrols, so less heat is being produced, and it takes an age to warm up.

 

The best thing to do is fit an electric DEFA engine block heater, and then plug the car in between 30-60 minutes before you need to leave the house; it pre-warms block and engine oil. It's easier on the engine, the battery and you. They're pretty much standard fitment on everything in the Nordics. You can even get an interior heater too, which is pretty great on a cold day. You just need an outside socket, which is also standard fitment in every Nordic house.

 

I've no idea if they're even sold in the UK but it can't be rocket science to source and install... see www.defa.com

Sir, you forget that in the UK it's only fairly recently been accepted that even house insulation is a GOOD thing and not one of those funny "Continental" ideas. 

 

Fred 

Quite some years ago, I had a L/R Series IIA which seemed to take an age to warm up on a cold day. The fitting of a Kenlowe Pre-Heater made all the difference at a half reasonable cost - http://www.rimmerbros.co.uk/Item--i-RX1361?src=UK0115W&utm_source=google&utm_medium=cpc&utm_campaign=PLA&gclid=CPGPzu_Mh8MCFUrjwgodVE4AiA. It might not have all the bells & whistles of a Defa system, but it's British-made and proven on Landies. No reason it shouldn't work on a Yeti.

 

   

Ahhhh nostalgia... Used to have a 1963 IIa swb diesel...or rather it had me. When I bought it it didn't have a thermostat..... brrr

Cheers

J