MG ZT 1.8T coolant loss - Page 2

Lotus7 · 9th February 2009, 05:17

British Racing Green

Lotus7 · 9th February 2009, 05:20

Thanks for that, I will do that tonight when I get home from work.

Quote:

Originally Posted by T-Cut

Since the fan runs continuously when the A/C system is on with engine running, the fan motor is obviously OK and the slow speed resistor is functioning. It would only operate every 30 seconds, on-off-on-off, at high speed if the resistor was dud.

If you detach the sensor wiring, the fan should trip into emergency high speed cooling mode. It sounds like the sensor or its wiring is faulty. Have you run the coolant temperature diagnostics to see what it says? See: http://www.the75andztclub.co.uk/foru...ng+temperature

Lotus7 · 9th February 2009, 09:41

Thanks for the link, however, how do I get into diagnostics mode?
As you can all tell, I am new to this so need a little hand holding!!

David

T-Cut · 9th February 2009, 10:49

Quote:

Originally Posted by Lotus7

how do I get into diagnostics mode?

Follow this: http://www.the75andztclub.co.uk/foru...hread.php?t=44

It can be a bit difficult to get right at first. Start with the engine running.
You have to start pressing every half second or so, until the screen gets to 'test 19' and stop. When the next screen starts to toggle 'test on/off', press when 'test off' shows and continue every half second till it reaches 'test 7.0' then stop. That's where you want to be. The temperature is displayed as a three digit number.

Lotus7 · 9th February 2009, 12:28

Thanks.

I am assuming that the disclaimer at the bottom of the link means that if you get it wrong, there can be dire consequences!!

David

Pete · 9th February 2009, 12:36

Hello David,

The disclaimer is there so no-one tries to sue me or Christopher.

Glib answer over, as with any work you do on a car it is case of proceed with caution and be aware of any risks. The disclaimer hopefully reminds everyone about this.

T-Cut · 9th February 2009, 14:57

Quote:

Originally Posted by Lotus7

- - - - there can be dire consequences!!

Yes, you have to start again.

Lotus7 · 9th February 2009, 18:37

Ha, Ha, Ha.

I will play around with it later on and probably have to do it loads of times before I get it right!!

pab · 9th February 2009, 18:41

it's simple really...survey the temp on your normal commute and report back your findings

pab

9th February 2009, 12:36	#16
Pete Owners Club Director Rover 75 Join Date: Oct 2006 Location: Sherfield-on-Loddon Posts: 4,872 Thanks: 137 Thanked 996 Times in 444 Posts	Hello David, The disclaimer is there so no-one tries to sue me or Christopher. Glib answer over, as with any work you do on a car it is case of proceed with caution and be aware of any risks. The disclaimer hopefully reminds everyone about this. __________________ Follow The Club On Twitter

9th February 2009, 05:17	#11
Lotus7 Newbie MG ZT 1.8T Join Date: Feb 2009 Posts: 9 Thanks: 0 Thanked 0 Times in 0 Posts	British Racing Green

9th February 2009, 09:41	#13
Lotus7 Newbie MG ZT 1.8T Join Date: Feb 2009 Posts: 9 Thanks: 0 Thanked 0 Times in 0 Posts	Thanks for the link, however, how do I get into diagnostics mode? As you can all tell, I am new to this so need a little hand holding!! David

9th February 2009, 12:28	#15
Lotus7 Newbie MG ZT 1.8T Join Date: Feb 2009 Posts: 9 Thanks: 0 Thanked 0 Times in 0 Posts	Thanks. I am assuming that the disclaimer at the bottom of the link means that if you get it wrong, there can be dire consequences!! David

9th February 2009, 18:37	#18
Lotus7 Newbie MG ZT 1.8T Join Date: Feb 2009 Posts: 9 Thanks: 0 Thanked 0 Times in 0 Posts	Ha, Ha, Ha. I will play around with it later on and probably have to do it loads of times before I get it right!!

9th February 2009, 18:41	#19
pab Banned MG ZT V6 190+ Join Date: Sep 2008 Location: Leeds Posts: 33,223 Thanks: 41 Thanked 1,614 Times in 1,416 Posts	it's simple really...survey the temp on your normal commute and report back your findings pab