2005 1.8t,how quick should the heater get hot?

[robbocop33]

Just replaced low speed fan resistor,getting ice cold air now!Anyway,from what i remember about my diesel,i was always impressed how quick the interior of the car got hot,2 or 3 miles along the road and it was nice and toasty!
With my 1.8t,considering turbo's of any kind usually heat car quicker,after 4,5 miles(i only drove it this far this morning after fitting resistor) you can detect a 'slight' warmth,more like slightly warm air naturally coming in the car from outside.
Top hose on radiator is hot so thermostat must be open.I'm pretty sure there is some kind of heatshield missing as i can clearly see all the turbo when i open the bonnet,but pretty sure this will have no bearing?

[Christopher Price]

On a cold day, warmth within a mile and full heat within 2.

[robbocop33]

So what's my problem then? ;-)

[T-Cut]

Assuming the coolant is free of air bubbles/locks and at the correct level, then the heater matrix might be silted up. The 1.8s warm up pretty fast and will run at around 90°C (check yours using on the diagnostic mode. Forget the gauge it tells you nothing useful). The radiator fan has no significant effect on the operation or otherwise of the heater. This is a full bore thermostat bypass system which will always circulate coolant at engine temperature, providing the matrix isn't clogged up.

TC

[robbocop33]

Are there bleed screws on the coolant pipes anywhere on this model?

[robbocop33]

It's showing coolant temp at 97-99 nirmal driving,100-102 fluctuating at idle after a run.How does that sound?

[SD1too]

Originally Posted by robbocop33

It's showing coolant temp at 97-99 nirmal driving,100-102 fluctuating at idle after a run.How does that sound?

It sounds rather hot Lee. Have you had any work done recently which required draining the coolant?

Originally Posted by robbocop33

Are there bleed screws on the coolant pipes anywhere on this model?

Yes. If you follow the bottom radiator hose towards the engine, you will come across it. On the 1.8 engine I believe that it has a hexagon head. I recommend that you follow MGR's bleeding procedure exactly.

Originally Posted by robbocop33

Top hose on radiator is hot so thermostat must be open.

That's a false conclusion on the 75/ZT engines I'm afraid Lee. The thermostat is not situated in the flow to the radiator. It is to be found in the return circuit at the end of the bottom radiator hose, or if you have a PRT directly behind the radiator.

Simon

[robbocop33]

Just discovered a 'really' odd thing,was looking at return hose going into block from the matrix,it was at a weird angle for a hose,seemed to run parallel with engine,then turn really sharply towards engine?
The bend was hidden by other bumff.Pulled on return hose from matrix and there was a complete fold in the hose!!It was bent fully over which would no doubt restrict flow.
When i pulled hose slightly it just popped out into its natural position'Can-t find a bleed screw though,heater still isn-t really hot.

[robbocop33]

Hose going into matrix hot,hose coming out of matrix just warm.Does that point to anything?Would have thought matrix 'might'act like small radiator! ;-)
I need to change the antifreeze as it desperately needs it,so definitively need to know where the bleed screw is (pics please) and best way to flush matrix.

[T-Cut]

Originally Posted by robbocop33

Hose going into matrix hot, hose coming out of matrix just warm.Does that point to anything?Would have thought matrix 'might'act like small radiator! ;-)

Well if there's no hot air being produced, the coolant flow through the matrix is very low. In other words there's a blockage. Yes the matrix is a small radiator. It works exactly like the engine radiator.

I need to change the antifreeze as it desperately needs it

Maybe that's why the heater matrix is clogged? 'Antifreeze' does far more than stop coolant freezing solid in winter. It will inhibit limescale if serviced properly. It's needed all the time and must be maintained at the specified concentration.

so definitively need to know where the bleed screw is (pics please)

HowTo: http://www.the75andztclub.co.uk/foru...d.php?t=168154

There are dozens of threads on this. Use the Google search system for most simple stuff: https://cse.google.co.uk/cse?hl=en&c...TQCA#gsc.tab=0

Maybe download the Handbook: http://storm.oldcarmanualproject.com...nersmanual.pdf

and best way to flush matrix.

Disconnect both heater hoses where the enter the firewall. Attach a hosepipe to one and give it a blast. After a good flush, swap sides and repeat. If it doesn't flush through at full bore, the matrix may need taking out to use a kettle descalant - or replacement if preferred.

TC