waynester2 Posted January 27, 2009 Report Share Posted January 27, 2009 Hi Guys, I've notice my A4 ('04 2.5TDI 163 CVT V6 Saloon) is taking an age to warm up these days, just took it for a drive tonight, from cold it was 6c outside but took 20 mins to get upto 90c which is where it normally sits, anyone else's 2.5tdi take this long to warm up? This was not slow roads either it was a mixture of A and B roads, I'm concerned that the thermostat might have gone causing coolant to go around the radiator full time, does this happen with these cars? Any advice appreciated, I remember my 1.8t warming up much quicker!!! Thanks W Link to comment Share on other sites More sharing options...
Mook Posted January 28, 2009 Report Share Posted January 28, 2009 Sounds like the thermostat. My 2.5 Allroad used to warm up really quickly. What's the heater like? Does it take ages to warm up as well? Link to comment Share on other sites More sharing options...
waynester2 Posted January 28, 2009 Author Report Share Posted January 28, 2009 What's the heater like? Does it take ages to warm up as well? Yeah same heater takes ages as well its a good 10 mins before you get any warmth! Hope its not a big job... W Link to comment Share on other sites More sharing options...
Mook Posted January 28, 2009 Report Share Posted January 28, 2009 Thermostat is a fairly quick job, but you may as well change the rad fluid at the same time. Whereabouts in Dorset are you? I can recommend a very good VW Audi specialist. Link to comment Share on other sites More sharing options...
waynester2 Posted January 28, 2009 Author Report Share Posted January 28, 2009 Thermostat is a fairly quick job, but you may as well change the rad fluid at the same time. Whereabouts in Dorset are you? I can recommend a very good VW Audi specialist. East Dorset Bournemouth way.... Link to comment Share on other sites More sharing options...
lesK Posted January 28, 2009 Report Share Posted January 28, 2009 Mine takes about 3-5 mins to warm up, never noticed it taking any longer. Link to comment Share on other sites More sharing options...
Mook Posted January 29, 2009 Report Share Posted January 29, 2009 East Dorset Bournemouth way.... Go to Williams Automotive on the Ferndown Industrial Estate - tell them Mook from Tyresmoke said you should call. I've used them for a few years now - excellent quality of workmanship, no bullsh*t and decent labour rates Link to comment Share on other sites More sharing options...
Chav Posted January 29, 2009 Report Share Posted January 29, 2009 diesels have a supplemental heater thingy to warm up the car don't they? maybe thats broken on yours. the diesel engine itself will take 15-20mins to heat up. petrol engines warm up quicker. Link to comment Share on other sites More sharing options...
Mook Posted January 29, 2009 Report Share Posted January 29, 2009 They have the modern equivalent of glow plugs - that's just to warm up the fuel before it get injected into the combustion chamber on startup Link to comment Share on other sites More sharing options...
lesK Posted January 29, 2009 Report Share Posted January 29, 2009 diesels have a supplemental heater thingy to warm up the car don't they?maybe thats broken on yours. the diesel engine itself will take 15-20mins to heat up. petrol engines warm up quicker. I timed mine today, and it was at 90 in 8 mins. I travel most of the start of my journey on a dual cariageway. This was at 70 - 75mph Link to comment Share on other sites More sharing options...
maersk Posted January 30, 2009 Report Share Posted January 30, 2009 AND a 1 Kw electric PCT ceramic element heater in the matrix which blows warm air immediately from start up...............................................:D Link to comment Share on other sites More sharing options...
MikeA2B Posted February 1, 2009 Report Share Posted February 1, 2009 My radiator burst a few months back, I had it replaced and noticed my car takes ages to warm up, the gauge never passes the quarter mark nowadays. Link to comment Share on other sites More sharing options...
maersk Posted February 2, 2009 Report Share Posted February 2, 2009 (edited) When you say burst do you mean 'burst' or 'leak'? If it 'burst' then there was a blockage somewhere and muck etc may be lodged in the thermostat wedging it slightly open all of the time. Start the car and run it for about five minutes and then check the temperaature of the top radiator hose. It should still be cool, indicating that the thermo is still shut. Is there not an auxiliary heater - webasto - on that engine at that age? Could be some of the sensors/wiring has been disturbed. Did it warm up quickly before the read. incident? If it is the thermostat................................. First remove the front of the engine......................... Not the best bit of automotive design then............................ Edited February 2, 2009 by maersk Link to comment Share on other sites More sharing options...
maersk Posted February 2, 2009 Report Share Posted February 2, 2009 Removing and installing additional heating heater element -Z35 Notes: <LI class=nonenone>◆ Checking operation of additional heating heater element -Z35. ◆ Vehicles with diesel engine are currently fitted with an electric additional heater (heat energy is added to air flow immediately after exiting from heating system heat exchanger). Audi Sales Range ◆ Vehicles with diesel engine and "auxiliary heater" as optional extra may not be fitted with an electric additional heater depending on vehicle control system. On such vehicles, this function is assumed by the auxiliary heater, which operates as a fuel-driven additional heater (by adding additional heat energy to the coolant). <LI class=nonenone>◆ Vehicles with petrol engines are not currently equipped with an additional heater. ◆ Replacement air distributor housings all have an opening for an additional heating element. If the vehicle has no additional heating element, the opening is to be sealed with a cover. Removing ‒ Remove driver's storage compartment.‒ → Unplug connectors -A- , -B- and -C- from heating element -B-. ‒ → Remove bolts -A- and pull additional heating element -B- out of heater.Installing ‒ Additional heating element -B- is only to be installed in heater with rubber bushes -D- at lugs -C-.Then re-install all components removed in reverse order. Link to comment Share on other sites More sharing options...
MikeA2B Posted February 2, 2009 Report Share Posted February 2, 2009 When you say burst do you mean 'burst' or 'leak'? I was over exaggerating, it started to leak and gradually got worse, I had it replaced within a week of it starting to leak. Does my car have an aux heater? it is very strange how the heaters take ages to warm up straight after having the rad replaced, its not losing any water now. Link to comment Share on other sites More sharing options...
maersk Posted February 3, 2009 Report Share Posted February 3, 2009 You should have the electric one (above) coud be a connector has become disconnected or something has just coincidentally failed. Check fuses and connections. Link to comment Share on other sites More sharing options...
MikeA2B Posted February 4, 2009 Report Share Posted February 4, 2009 (edited) Sorry to sound stupid but is the electric one located in the heater matrix behind the dash? Edited February 4, 2009 by MikeA2B Link to comment Share on other sites More sharing options...
MikeA2B Posted February 4, 2009 Report Share Posted February 4, 2009 I have never heard of an auxilliary heater till now, what makes me think is did it burn out when my radiator started leaking? Link to comment Share on other sites More sharing options...
maersk Posted February 4, 2009 Report Share Posted February 4, 2009 Who knows......................possible OR a connector distured when the rad was done IF it worked before-hand. Details above show where it is and you shoould check the fuses! Link to comment Share on other sites More sharing options...
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