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Sharan 20011 2tdi BM Slow to warm up and fumes

Started by timsamsara, October 06, 2022, 09:23:12 AM

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Sorry me again.
my sharan is very slow to warm up on the temp guage. i drove for 40mins today before any heat came out of the vents.  the temp fluctuates from 50 to 60 to 90 on a journey. am i right in assuming this is the thermostat?

in addition to this when slowed to a stop in say traffic the temp drops and then fumes come into the cabin.  im assuming this is the aux heater glow plug that needs replacing. Any other suggestions?

i love this car its new to us but my its testing my patience already :)

I have a similar thing on my Alhamb, I'm told it's because the engine is extremely efficient and produces very little waste heat. The aux heater never works tho so I wouldn't worry about that.
I drive a Seat Alhambra 1.9Tdi which has 115bhp and an automatic gearbox.

I am happy to help you with all your questions. I am not a qualified mechanic but seem to be better at fixing my car than even the most experienced garages.

I have lots of friends here and very much enjoy talking with you all. Always remember, a motor car is a serious tool and should be treated with respect. Put your safety first, always.

Check the temperature of the radiator compared to the hoses - or check both sides of the thermostat. If both seem to be the same temperature, then the thermostat isn't working properly (might be stuck, broken, got something caught in it or missing completely)

Also if the engine is running cool, it may not be running as well as it should, which could account for the smell when standing as well, no idea on booster heater on the mk3 but if its anything like the earlier models it won't be coming on until it gets colder. They also generally have a seperate exhaust but then the mk1/2 is a completely different vehicle so could be different.

Sounds very much like the thermostat is stuck open if you get no heat after 40 minutes of driving, especially when weather isn't even that cold yet.

we had a 64 reg Sharan for 3 years that had a Webasto as opposed to Ebersp├Ącher heater and was mounted behind engine and exhaust came out by o/s/f wheel arch, am sure it was 10 degrees before it would switch on.
2016 Vauxhall Insignia Elite Nav in White 2.0CDTI Manual.
2009 Kia Sedona GS In Black 2.9CRDI 183PS. 5 Speed Manual Wheelchair accessible vehicle.

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