Climate Control Problem

GadgetBoy · 6th November 2009, 18:13

content removed at OPs request

The Jugs · 6th November 2009, 18:44

99 % its blocked heater matrix. Silt gathers in the passenger side blocking the flow around the matrix. Proberbly find plenty of threads on this using the site search facility. Not to difficult a job. Had exactly the same on mine this time last year. Couldn't believe the amount of sediment that came out EVENTIALLY.

Mike · 6th November 2009, 19:15

Here you go

http://www.the75andztclub.co.uk/foru...ead.php?t=7515

The Jugs · 6th November 2009, 20:12

The only thing i'd add to the "how to" would be if you follow the coolant pipes back where they go up into the bulkhead you will find a clamp. Just one philips screw in the middle. I removed this clamp (bit fiddley) to give the pipes a bit of flexibility when refitting. It was just that I had seen some posts where people had trouble getting a good tight seal when reconnecting the pipes. As for the coolant refill, you can do by means of undoing the header tank and suspending it as high as possible WITHOUT KINKING THE PIPES ATTATCHED, give it a good bleed through via the bleed screw before starting. If I remember right, I started the engine on mine wilst the bleed screw was still open. Make sure the coolant level doesn't drop lower than the bottom of the tank. Be a good idea to use the on board diagnostic coolant temp facility when running it up. Good luck.

g-mac · 9th November 2009, 00:12

ive the same problem which i tryed to sort, drained the system, cleaned out the matrix etc but still a cold car with little heat
any ideas?

T-Cut · 9th November 2009, 09:31

Quote:

Originally Posted by g-mac

ive the same problem which i tryed to sort, drained the system, cleaned out the matrix etc but still a cold car with little heat
any ideas?

Assuming the matrix is now clear (did you test it in any way?) then the next probable cause is an air lock in the coolant system. There could be a bubble in the heater matrix. Try bleeding the system as described in Haynes, or if you have a Pela, evacuating the system to see if the air can be removed. The Pela refilling method will avoid air entrapment.

TC

g-mac · 9th November 2009, 11:14

yes i tested it and was hot all over, my only propblem when draining the system was i could not remove the lower drainage bolt, would that a big mistake? it just wouldnt turn, is it off clockwise or anti?

6th November 2009, 18:13	#1
GadgetBoy Retired M Join Date: Aug 2009 Location: UK Posts: 38 Thanks: 0 Thanked 0 Times in 0 Posts	Climate Control Problem content removed at OPs request Last edited by Dragrad; 8th May 2012 at 00:34..

6th November 2009, 18:44	#2
The Jugs Loves to post Rover 75 saloon club SE manual 2.0 V6 Join Date: May 2008 Location: Chatham, Kent. Posts: 289 Thanks: 0 Thanked 0 Times in 0 Posts	99 % its blocked heater matrix. Silt gathers in the passenger side blocking the flow around the matrix. Proberbly find plenty of threads on this using the site search facility. Not to difficult a job. Had exactly the same on mine this time last year. Couldn't believe the amount of sediment that came out EVENTIALLY. __________________ [SIGPIC][/SIGPIC] Last edited by The Jugs; 6th November 2009 at 18:54..

6th November 2009, 19:15	#3
Mike This is my second home Rover 75 V8 Join Date: Oct 2006 Posts: 3,448 Thanks: 0 Thanked 206 Times in 32 Posts	Here you go http://www.the75andztclub.co.uk/foru...ead.php?t=7515 __________________ Mike [SIGPIC][/SIGPIC]

6th November 2009, 20:12	#4
The Jugs Loves to post Rover 75 saloon club SE manual 2.0 V6 Join Date: May 2008 Location: Chatham, Kent. Posts: 289 Thanks: 0 Thanked 0 Times in 0 Posts	The only thing i'd add to the "how to" would be if you follow the coolant pipes back where they go up into the bulkhead you will find a clamp. Just one philips screw in the middle. I removed this clamp (bit fiddley) to give the pipes a bit of flexibility when refitting. It was just that I had seen some posts where people had trouble getting a good tight seal when reconnecting the pipes. As for the coolant refill, you can do by means of undoing the header tank and suspending it as high as possible WITHOUT KINKING THE PIPES ATTATCHED, give it a good bleed through via the bleed screw before starting. If I remember right, I started the engine on mine wilst the bleed screw was still open. Make sure the coolant level doesn't drop lower than the bottom of the tank. Be a good idea to use the on board diagnostic coolant temp facility when running it up. Good luck. __________________ [SIGPIC][/SIGPIC]

9th November 2009, 00:12	#5
g-mac Gets stuck in ZT 190+ Join Date: Jun 2009 Location: Ballymena, Northern Ireland Posts: 851 Thanks: 0 Thanked 0 Times in 0 Posts	ive the same problem which i tryed to sort, drained the system, cleaned out the matrix etc but still a cold car with little heat any ideas?

9th November 2009, 11:14	#7
g-mac Gets stuck in ZT 190+ Join Date: Jun 2009 Location: Ballymena, Northern Ireland Posts: 851 Thanks: 0 Thanked 0 Times in 0 Posts	yes i tested it and was hot all over, my only propblem when draining the system was i could not remove the lower drainage bolt, would that a big mistake? it just wouldnt turn, is it off clockwise or anti?