car temps
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Discussion

Crease

Original Poster:

583 posts

190 months

Wednesday 19th October 2011
quotequote all
evening all!

just wondering, in the past couple of weeks, ive noticed my car hasnt been getting as hot as it used to :S

the temp gauge barely moves off 70 deg and the heaters are lukewarm,

the only difference ive made was a new radiator about 2/3 months ago, but it got upto temps fine before now

its a 306 1.9dturbo, and my communte is around 20miles and mainly nsl A & B roads!

ive covered half of my radiator with a thick plastic sheet, to try and stop the wind getting to it, reckon that will work?

any ideas on what it could be? i love my heaters and with this cold weather, im lost without them!

Ray Luxury-Yacht

8,918 posts

237 months

Wednesday 19th October 2011
quotequote all
I'd imagine either A: there's an airlock in the coolant system, or more likely B: the thermostat is stuck open.

Either way, easy fixes.


Ozzie Osmond

21,189 posts

267 months

Wednesday 19th October 2011
quotequote all
Thermostat.

Your car isn't going to die of it (especially with your bodge fix) but ought to be sorted really.

McSam

6,753 posts

196 months

Wednesday 19th October 2011
quotequote all
Pretty textbook thermostat failure. If you find the car can get up to temperature sitting at idle but drops again when moving at speed, the it's all the more definite, but you don't always see this.

andy-xr

13,204 posts

225 months

Wednesday 19th October 2011
quotequote all
Thermostat stuck open

IainZ

14,395 posts

227 months

Wednesday 19th October 2011
quotequote all
Crease said:
evening all!

just wondering, in the past couple of weeks, ive noticed my car hasnt been getting as hot as it used to :S

the temp gauge barely moves off 70 deg and the heaters are lukewarm,

the only difference ive made was a new radiator about 2/3 months ago, but it got upto temps fine before now

its a 306 1.9dturbo, and my communte is around 20miles and mainly nsl A & B roads!

ive covered half of my radiator with a thick plastic sheet, to try and stop the wind getting to it, reckon that will work?

any ideas on what it could be? i love my heaters and with this cold weather, im lost without them!
Run the car & then let it sit idling for a while. The temperature should then climb up to normal & the fans come on. Then drive off, do a few miles of steady driving & if the temperature starts falling then you need a new thermostat - the spring has got old & weak so it opens fine but opens too far & won't close, hence why the car is running too cool. The whole point of the T'stat is to regulate the flow of water to the radiator to maintain a constant temperature. If the spring's too old/weak then it can't close & so the temperature stays low - unless you are sat in traffic.

The plastic in front of the radiator is not a great idea, if you get in a traffic jam the thing will possibly overheat, even with the fans on.

Depending on where it is a T'stat can usually be changed in about an hour. You should get it fixed because it doesn't actually do the engine much good to run at low temperatures & it may also burn more fuel.

Crease

Original Poster:

583 posts

190 months

Wednesday 19th October 2011
quotequote all
thanks for the speedy replies guys!

ill pick up a new thermostat for the old girl tmoz, its only a banger that im trying not to spend on, but a few quid for some decent heat wont bother me too much!

much appreciated thumbup

McSam

6,753 posts

196 months

Wednesday 19th October 2011
quotequote all
You best just hope it's not in the same place as mine hehe


Crease

Original Poster:

583 posts

190 months

Wednesday 19th October 2011
quotequote all
audi a4 tdi by anychance? eek


mines right on the front of the engine, pretty easy! ill time it for you wink

McSam

6,753 posts

196 months

Wednesday 19th October 2011
quotequote all
Hehe, yes an A4, but this is a V6. What a pain in the arse that was, rough steps nicked from the blog entry:

Thermostat Blog said:
"Air charging plastic bits and bobs out
Headlights out
Front bumper off - fiddly.
Three million wires and hoses off the slam panel and radiator
Aforementioned off - quite heavy, actually! - except they can't come all the way off because the air con hose connects to them, so that's that assembly hanging on the left!
Typical Audi four thousand engine and belt covers off
Drive belt and pulleys off
Cam belt off - worked out it could just about stay on the crank pulley, you can see it hanging in place!
Absolutely most tightly located thermostat housing in the world wiggled out
Stat out biggrin
New thermostat O-ring which appears far too big eventually wedged into place with a screwdriver and small hammer

...Then refitting is simply the reverse of removal!

Took AGES."
By all means time it for me.. Because this took about four hours grumpy

Crease

Original Poster:

583 posts

190 months

Wednesday 19th October 2011
quotequote all
ahh, we had a tdi v6 in work and it looked pretty much the same,thats how i recognised it! we had to have the front end off lots though frown turbo problems! i feel for you though, it is a majour ballache!

i shall time it, have u ever seen the film cars? with luigi the tyre fitter at the end wink

haha, it makes me chuckle everytime i think about it, just how absurdly fast he changes the tyres!

fangio

989 posts

255 months

Thursday 20th October 2011
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....and don't forget to buy a new O-ring/gasket! wink