Jaguar S-Type - Blue smoke

Honest John Back Room » Technical matters
View Threaded
Thu 12 Dec 2013 21:47
Jaguar S-Type - Blue smoke - rashers50
Hi
I bought an S type Jaguar two weeks ago, the first frosty morning we had I started the engine and pressed the three buttons to clear front and rear screens,the blower started up inside and the screens cleared, I had left the engine running for about five minute's then blue smoke started blowing down from the front right hand side of the engine (as you look at it) , it had a strong smell like plastic or rubber burning. I turned the engine off and had a look and it seemed to be blowing down from which looked like a vent hole on the right hand side behind the front valence. Started the car again and it seemed to have stopped, tried it today with and pressed the same buttons and it did it again but not so much blue smoke this time.
Please can anyone shed any light on this.
Rasher
Reply | Report as offensive | Link
Thu 12 Dec 2013 21:52
Jaguar S-Type - Blue smoke - daveyjp
Which engine type?
Reply | Report as offensive | Link
Fri 13 Dec 2013 09:25
Jaguar S-Type - Blue smoke - pd

Is it a diesel? In which case it is probably the auxillary under bonnet heater which is a small diesel powered unit designed to boost the heat on a cold morning.

It comes on under 5 degress when the aircon is switched to on.

It is quite normal, the vent you speak of is an actual mini exhaust.

Edited by pd on 13/12/2013 at 09:26

Reply | Report as offensive | Link
Sat 14 Dec 2013 00:37
Jaguar S-Type - Blue smoke - Avant

Moved to Technical.

Reply | Report as offensive | Link
Sat 14 Dec 2013 14:13
Jaguar S-Type - Blue smoke - rashers50
It is a diesel , my worry was the smell of the smoke. Thanks for your help I shall keep my eye on it
Reply | Report as offensive | Link
Sat 4 Jan 2014 13:57
Jaguar S-Type - Blue smoke - rashers50
Hi pd
You replyed to my smoking jag back in December you said it could be the auxiliary under bonnet heater ,
It still does it and it seems to be every time the aircon comes on it smokes and more so below 5 degrees .
You did say it's quite normal but the car really stinks of smoke I was wondering if you knew anymore about this problem and is there anything I can do to sort it.
Reply | Report as offensive | Link
Tue 5 Mar 2019 08:12
Jaguar S-Type - Blue smoke - Steve Waxman

For the future sir, the problem you are having is with the Diesel auxillary heater. Its not a fault, but you will need to get the ECU Unit re-programmed. what this does will reduce the amount of fuel sent to the Pre-Heater. Most Auto Technicians will do this.

£55.00... but a whole lot cheaper than going to Jag.

Hope this helps

SW

Reply | Report as offensive | Link
Sat 9 Mar 2019 11:15
Jaguar S-Type - Blue smoke - bluezzr1100

Could the drive belt be slipping on the air con compressor-it will turn freely until the clutch pulls in- is the belt loose or damaged? Just a thought

Reply | Report as offensive | Link

Looking for a garage you can trust? Honest John's Good Garage Guide has thousands of reader recommended garages, plus how-to guides and tips on servicing.

The Good Garage Guide