Thermostat problem?

0149geep · 7th February 2014, 21:32

I note that thermostat problems are common and on my CDTI the needle on the temperature gauge never gets beyond the quarter position.

In view of the fact that the heater is always quite hot does that mean that this could be a faulty gauge rather than a faulty thermostat ??

75Connie · 7th February 2014, 21:38

Quote:

Originally Posted by 0149geep

In view of the fact that the heater is always quite hot does that mean that this could be a faulty gauge rather than a faulty thermostat ??

Use the On Board Diagnostics to measure the temperature that the ECM is seeing. You're looking for diagnostic test 19.7. See this: http://www.the75andztclub.co.uk/foru...rd+Diagnostics

There is a massive amount of evidence that says the original thermostat fails in an open position in the CDTs. This is usually corrected by the insertion of a Renault 5 thermostat into the top hose as a secondary thermostat that wont open until coolant rises to 89 deg C.

wuzerk · 7th February 2014, 21:59

Quote:

Originally Posted by 0149geep

I note that thermostat problems are common and on my CDTI the needle on the temperature gauge never gets beyond the quarter position.

In view of the fact that the heater is always quite hot does that mean that this could be a faulty gauge rather than a faulty thermostat ??

The temperature gauge is a very rough indicator owing to the fact that it will show 'normal' i.e. at the nine oclock position from 75C to over 100C so your only way to check the actual temperature is as above.

SD1too · 7th February 2014, 22:40

Quote:

Originally Posted by 0149geep

... the heater is always quite hot ...

It depends upon how you define "quite hot" in degrees celsius Graham!

Simon

TeeCee · 8th February 2014, 09:21

Quote:

Originally Posted by 0149geep

I note that thermostat problems are common and on my CDTI the needle on the temperature gauge never gets beyond the quarter position.

In view of the fact that the heater is always quite hot does that mean that this could be a faulty gauge rather than a faulty thermostat ??

If you reckon that's "quite hot" you'll be pleased to hear that when the thermostat's working it gets "very hot"......

DMGRS · 8th February 2014, 14:26

'There's a kit for that!'

Fit one of these, and your problems should disappear:
Inline Thermostat Kit

braceuself · 13th February 2014, 13:19

just bought the thermostat as mentioned above to put in top hose.where in the hose does it go and which direction should it face?

Union Wheels · 13th February 2014, 14:29

Quote:

Originally Posted by braceuself

just bought the thermostat as mentioned above to put in top hose.where in the hose does it go and which direction should it face?

Hi, the Stat. fits inside the top hose as near to the cylinder head as possible, with wax bulb facing the engine.

It is a very tight fit in the hose so use silicone grease or washing up liquid as a lubricant.

You will need to cut through the stainless steel band at the engine end of the hose. I used a hacksaw blade, being careful not to cut into the hose.

Pete.

braceuself · 13th February 2014, 17:15

cheers.so its just held in place in the hose itself?

T-Cut · 13th February 2014, 18:59

Typically, the inline (in-hose) stat simply stays put due to the resilience of the rubber hose. Some people add Jubilees for a belt'n'braces fit, but it's not going anywhere for sure.

TC

7th February 2014, 21:32	#1
0149geep Newbie Rover 75 saloon 2004 Join Date: Jan 2014 Location: Nottingham Posts: 17 Thanks: 10 Thanked 0 Times in 0 Posts	Thermostat problem? I note that thermostat problems are common and on my CDTI the needle on the temperature gauge never gets beyond the quarter position. In view of the fact that the heater is always quite hot does that mean that this could be a faulty gauge rather than a faulty thermostat ??

8th February 2014, 14:26	#6
DMGRS Discount MG Rover Spares Rover 75 CDTi, 2x MG ZS180 Join Date: Jun 2011 Location: Hythe, Southampton Posts: 11,354 Thanks: 456 Thanked 3,377 Times in 2,027 Posts	'There's a kit for that!' Fit one of these, and your problems should disappear: Inline Thermostat Kit __________________ Your trusted MG Rover specialist! Tel: 02380 001133 / Email: [email protected] We now have a 'chat' function on our site for even quicker replies. Give it a try! Remember - discount code FORUM5 for 5% off

13th February 2014, 13:19	#7
braceuself Newbie rover 75 saloon Join Date: Jan 2014 Location: neath Posts: 8 Thanks: 0 Thanked 1 Time in 1 Post	just bought the thermostat as mentioned above to put in top hose.where in the hose does it go and which direction should it face?

13th February 2014, 17:15	#9
braceuself Newbie rover 75 saloon Join Date: Jan 2014 Location: neath Posts: 8 Thanks: 0 Thanked 1 Time in 1 Post	cheers.so its just held in place in the hose itself?

13th February 2014, 18:59	#10
T-Cut This is my second home Rover75 and Mreg Corsa. Join Date: Nov 2006 Location: Sumweer onat mote o'dust (Sagin) Posts: 21,754 Thanks: 341 Thanked 3,660 Times in 2,924 Posts	Typically, the inline (in-hose) stat simply stays put due to the resilience of the rubber hose. Some people add Jubilees for a belt'n'braces fit, but it's not going anywhere for sure. TC