Cdti Thermostat

Alex30013k · 15th March 2008, 08:04

Morning, i now have the money to spend on my car, i want to fix my Thermostat as it never gets over the quarter mark,

What needs to be done to change this so i know what to ask for when i go to the garage?

Will the car need new coolant?

crofts · 15th March 2008, 10:59

Let's know if that works Alex. I've got an idea it might be an unreliable sender or gauge.

Alex30013k · 15th March 2008, 12:02

Thats the thing i dont want to take the risk of it now working,

See how much they are going to charge,
Does the thermostat send the engine temp to the gauge?

How does the system work?

Simon · 20th March 2008, 18:57

The thermostat is a valve. When the coolant reaches a certain temperature the valve opens and lets the coolant flow around the radiator. At a guess it also sends the temperature signal to the IPK via the ECU but I'm not totally up on the technical aspects of this. Thought I'd chip in though seeing as you hadn't yet had an answer.

Alex30013k · 20th March 2008, 21:13

Thanks for that,

I've still got to work out when i dont need the car to book her in,

DJW · 20th March 2008, 21:35

In the hope of trying to be helpful rather than teaching you to suck eggs I offer this help. The thermostat as already mentioned is a valve that is capable of opening and closing to regulate/maintain the engine temperature.
The temperature is measured by a temperature sender which may or may not be part of the thermostat housing.
My suggestion if you want to save time/money is to have a think/look for yourself at the symptoms.
Let's assume that since you have owned the car the gauge used to reach halfway?
Has any work been carried out that ties in within this change?
Can you get hot air from the heater or has this performance declined too?
What you need to establish first basically is whether the car is running cold or the instrument cluster displaying cold.
Have a think about these things first and reply if you like.
I will then offer you some more advice, I apologise for any vagueness but I have only owned my CDTI for less than a week but I certainly know how a car works and willing to help.

Lates · 20th March 2008, 22:27

They are not a nice job to replace - 3.5 hours book time :shock:

DJW · 20th March 2008, 22:32

That must be the longest time ever for any thermostat replacement!

Lates · 20th March 2008, 22:34

Take a look where it is and the amount of pipework that needs to be removed. I have one in next week and I hope Pete is looking forward to it as I am not.I will find a K16 head to do instead

Greeners · 20th March 2008, 22:50

Quote:

Originally Posted by Lates

Take a look where it is and the amount of pipework that needs to be removed. I have one in next week and I hope Pete is looking forward to it as I am not.I will find a K16 head to do instead

15th March 2008, 08:04	#1
Alex30013k Posted a thing or two Rover 75 Saloon 2.0 CDTi Conn Se Join Date: Nov 2006 Location: Ashford Kent Posts: 1,560 Thanks: 17 Thanked 29 Times in 21 Posts	Cdti Thermostat Morning, i now have the money to spend on my car, i want to fix my Thermostat as it never gets over the quarter mark, What needs to be done to change this so i know what to ask for when i go to the garage? Will the car need new coolant?

15th March 2008, 10:59	#2
crofts I really should get out more....... 2003 Rover 75 Conn. SE Auto Tourer 131 ps CDTi Join Date: Nov 2006 Location: Bristol Posts: 2,512 Thanks: 38 Thanked 67 Times in 55 Posts	Thermostat Let's know if that works Alex. I've got an idea it might be an unreliable sender or gauge. __________________ Rover 75 CDTi SE Connoisseur Tourer (2003) In desirable STARLIGHT SILVER (now restored to it's former glory with all the chrome !)

15th March 2008, 12:02	#3
Alex30013k Posted a thing or two Rover 75 Saloon 2.0 CDTi Conn Se Join Date: Nov 2006 Location: Ashford Kent Posts: 1,560 Thanks: 17 Thanked 29 Times in 21 Posts	Thats the thing i dont want to take the risk of it now working, See how much they are going to charge, Does the thermostat send the engine temp to the gauge? How does the system work?

20th March 2008, 18:57	#4
Simon Banned - Join Date: Nov 2006 Location: - Posts: 10,318 Thanks: 0 Thanked 4 Times in 3 Posts	The thermostat is a valve. When the coolant reaches a certain temperature the valve opens and lets the coolant flow around the radiator. At a guess it also sends the temperature signal to the IPK via the ECU but I'm not totally up on the technical aspects of this. Thought I'd chip in though seeing as you hadn't yet had an answer.

20th March 2008, 21:13	#5
Alex30013k Posted a thing or two Rover 75 Saloon 2.0 CDTi Conn Se Join Date: Nov 2006 Location: Ashford Kent Posts: 1,560 Thanks: 17 Thanked 29 Times in 21 Posts	Thanks for that, I've still got to work out when i dont need the car to book her in,

20th March 2008, 21:35	#6
DJW Avid contributor MG ZT CDTI, MG ZT 160+ Join Date: Mar 2008 Posts: 129 Thanks: 0 Thanked 0 Times in 0 Posts	In the hope of trying to be helpful rather than teaching you to suck eggs I offer this help. The thermostat as already mentioned is a valve that is capable of opening and closing to regulate/maintain the engine temperature. The temperature is measured by a temperature sender which may or may not be part of the thermostat housing. My suggestion if you want to save time/money is to have a think/look for yourself at the symptoms. Let's assume that since you have owned the car the gauge used to reach halfway? Has any work been carried out that ties in within this change? Can you get hot air from the heater or has this performance declined too? What you need to establish first basically is whether the car is running cold or the instrument cluster displaying cold. Have a think about these things first and reply if you like. I will then offer you some more advice, I apologise for any vagueness but I have only owned my CDTI for less than a week but I certainly know how a car works and willing to help.

20th March 2008, 22:27	#7
Lates This is my second home Jaguar XE Join Date: Nov 2006 Location: Coventry Posts: 4,321 Thanks: 56 Thanked 59 Times in 55 Posts	They are not a nice job to replace - 3.5 hours book time :shock:

20th March 2008, 22:32	#8
DJW Avid contributor MG ZT CDTI, MG ZT 160+ Join Date: Mar 2008 Posts: 129 Thanks: 0 Thanked 0 Times in 0 Posts	That must be the longest time ever for any thermostat replacement!

20th March 2008, 22:34	#9
Lates This is my second home Jaguar XE Join Date: Nov 2006 Location: Coventry Posts: 4,321 Thanks: 56 Thanked 59 Times in 55 Posts	Take a look where it is and the amount of pipework that needs to be removed. I have one in next week and I hope Pete is looking forward to it as I am not.I will find a K16 head to do instead