A4 warming up question

[jimjamspider]

Recently got myself a 1.9 TDI A4 Avant. Never had an Audi or a diesel before. Fantastic car however it takes about 15 mins to warm up in the morning. As soon as I leave my house I hit a traffic jam and sit there for 10 mins+, all this time the engine is cold, it takes a further 5 minutes+ when I get onto the motorway for it to get to normal temp. Is this just a diesel thing/ Audi thing?

[Dilligaf10]

Diesels take longer to warm up than petrols usually. I know that if HGV are sitting idling the temp actually goes down. My Audi has an auxillary heater setting than runs with the climate control to warm it up a bit quicker.

[Roley130]

This is quite normal for the 1.9 TDI. They have an Aux heater which warms the coolant in cold weather making the heater much more reactive. My A4 TDi takes a long time to warm up in just the same way, but the heater chucks out warm air aftre only about a mile or so on cold mornings.

[Nobby Diesel]

Yes, this is completely normal. I'm on my 3rd 1.9 TDi; they are slow to wake up.

[JeffC]

they do take a while as the have a big viscous (spelling) fan drawing cool air through the rad, this is why when idling they cool down ;-) 15mins sounds a little to long I would get the thermostat checked.

A little tip , turn off the aircon as that will also turn off the electric cooling fan that comes on when the aircon is activated.

Edited by JeffC on Tuesday 26th December 22:02

[J500ANT]

Its all to do with thermodynamic efficiency. The 1.9 TDI engine is so good at taking energy from the fuel that little is left over as waste heat.

http://tdiclub.com/TDIFAQ/TDiFAQ-2.ht

Edited by J500ANT on Wednesday 27th December 00:04

Edited by J500ANT on Wednesday 27th December 00:07

[jimjamspider]

Cheers