2.0 TDI - How many thermostats are there??

[Joshua Dimbylow]

Hi All,

I want to replace my thermostat which seems to be stuck open (temp gauge low, lower MPG, matrix not heating as fast) but I keep reading about more than one thermostat? How do you know which one is faulty? And is it a sealed unit or can you just replace the thermostat itself??

THanks!

J

[sbt]

If it is manual there is one main stat autos have two there is a small one in a coolant pipe not sure where

[mattyk]

If it is manual there is one main stat autos have two there is a small one in a coolant pipe not sure where

I have been looking also so I have multitronic so there would be 2 then ? I also can’t find a video on it being done anywhere

[mattyk]

If it is manual there is one main stat autos have two there is a small one in a coolant pipe not sure where

Hi All,

I want to replace my thermostat which seems to be stuck open (temp gauge low, lower MPG, matrix not heating as fast) but I keep reading about more than one thermostat? How do you know which one is faulty? And is it a sealed unit or can you just replace the thermostat itself??

THanks!

J

This is my exact problem also didn’t notice the temp it was more the mpg going down the more I look I then notice it not warming to very well

[Joshua Dimbylow]

Mine is an auto. Only one part seems to come up when I search for it so I got that one (thermostat plus housing) which fits between hoses. Gonna give it a go anyway

[arman123]

is this any help

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A4 Mk3

Power unit > 4-cylinder TDI engine (2.0 ltr. 4-valve common rail), mechanics > Engine cooling > Parts of cooling system (on engine) > Removing and installing 4/2-way valve with thermostat

Removing and installing 4/2-way valve with thermostat Special tools and workshop equipment required

t Multi-point bit XZN 8 -T10445- Removing Note t The thermostat is located in the interior of the 4/2-way valve and cannot be renewed separately.

t Remove engine cover panel -arrows-.

t Open hose clips -arrows- and detach air hose.

t Unplug electrical connector -2-. t Remove nut -1- and move bracket with electrical connector to one side. – Drain coolant → Chapter.

– Detach coolant hoses from connections -A, B and D-. – Remove bolt -2- with multi-point bit XZN 8 -T10445-. – Remove bolts -1-. – Pull valve out of cylinder block and detach connection -C- from coolant pipe to the left. Installing l Tightening torque → Chapter Installation is carried out in the reverse order; note the following: Note Fit new O-ring. – Install throttle valve module -J338- → Rep. gr.23. – Install alternator → Electrical system; Rep. gr.27.

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A4 Mk3

Power unit > 4-cylinder TDI engine (2.0 ltr. 4-valve common rail), mechanics > Engine cooling > Parts of cooling system (on engine) > Removing and installing 4/2-way valve with thermostat

Removing and installing 4/2-way valve with thermostat Special tools and workshop equipment required

t Multi-point bit XZN 8 -T10445- Removing Note t The thermostat is located in the interior of the 4/2-way valve and cannot be renewed separately.

t Remove engine cover panel -arrows-.

t Open hose clips -arrows- and detach air hose.

t Unplug electrical connector -2-. t Remove nut -1- and move bracket with electrical connector to one side. – Drain coolant → Chapter.

– Detach coolant hoses from connections -A, B and D-. – Remove bolt -2- with multi-point bit XZN 8 -T10445-. – Remove bolts -1-. – Pull valve out of cylinder block and detach connection -C- from coolant pipe to the left. Installing l Tightening torque → Chapter Installation is carried out in the reverse order; note the following: Note Fit new O-ring. – Install throttle valve module -J338- → Rep. gr.23. – Install alternator → Electrical system; Rep. gr.27.

[Joshua Dimbylow]

[QUOTE=arman123;1112484]is this any help

This looks like the part thank you!!! I'm gonna change it this week so will let everyone know how it goes