Heater Matrix

Siestaman · 21st November 2018, 15:35

I have to replace my heater matriix owing to leaks from it. My car is a 1999, diesel, LHD, 2.0, CDT, manual.
I read the excellent item on Heater Matrix removal, but I'd like to know if there is anything holding the Matrix into the heater module except the screws (2) holding the pipes together against the module???
If I remove those 2 screws and split the pipes will the matrix just slide out?
Any input is always welcome as I'm out here in Spain, Costa Blanca.

Heddy · 21st November 2018, 17:12

Yes, that's it. It just slides out. A word of warning, the wrap around clips are pretty awful, be careful not to distort them and be sure pipes are pushed fully home as you re-tighten them.

Siestaman · 21st November 2018, 21:17

Thanks Heddy.
For such a complicated piece of vehicle it's nice to find something relatively simple. Shame the guy who placed the clutch master cylinder wasn't so helpful, or the guy who designed the in tank fuel system, or the guy who placed the ECU in such a stupid spot.
What a nice surprise!
Thanks again.

Siestaman · 2nd December 2018, 09:05

Well I managed to remove the matrix and to do it without damaging the pipework.
However, getting the new one in has been a real B*** Ache.
After hours of struggling I got the bottom pipe to mate up with the matrix and managed to get the clip in place, securely, I hope.
The reasoning that i did the lower one first was that it would help bring the top pipe closer to the matrix.
Now I find that the clip for the top pipe has only marginal movement available and the pipe/matrix are not mating. I can't get into the space properly to secure a good mating.
Any help on how to get the top pipe to move to join the matrix would be very welcome. I have limited tools available to assist me though. No clamps or compressors. Just everyday DIY tools.
Thanks again.

Heddy · 2nd December 2018, 13:17

Hiya, really feel for you having done this job. I'm sure some members have cut the pipes and joined them with jubilee clips and rubber hose. So tight in there, can't find pics but maybe someone else can. A dremmel or other tool may be useful, or even a pipe cutter. Obviously, I'm not suggesting you do this because you can end up with even more trouble. This will bump the thread to the top for a while so maybe someone can help.

Heddy · 2nd December 2018, 15:36

Hiya, if you're gonna take the route of cutting the pipes and fitting pieces of hose, then this may help
https://the75andztclub.co.uk/forum/s...51&postcount=1

Vanbursta · 3rd December 2018, 11:00

Quote:

Originally Posted by Siestaman

or the guy who placed the ECU in such a stupid spot.
What a nice surprise!
Thanks again.

You want to see where they put the ECU on a Mondeo 4, now THAT is stupid.

COLVERT · 3rd December 2018, 16:53

I too would go for 'cut the pipes and fit the hoses'. In the long run faster and quicker. Also playing with the original pipes can still end you up with coolant leaks.----

Tdr007 · 9th December 2018, 10:00

I’ve done this. I realised pretty early on I wasn’t going to get them back together with the clips. I cut the flanges off both ends and used 16 or 18 mm heater hose and four small jubilee clips. Tighten them up and applied sealant. It leaked a bit after a few days but tightened up the clips.

Siestaman · 9th December 2018, 13:55

That's what I'll do then. Thanks to all. I'm back in UK for Xmas in a couple of days, so it'll have to wait until I get back in mid January. I'll keep you all updated next year.
Thanks to everyone for all the input.
If the Mondeo 4 is worse positioned I'd be gobsmacked. Thanks Vanbursta.

21st November 2018, 15:35	#1
Siestaman Regular poster Rover 75 Join Date: May 2018 Location: Beniganim, Spain Posts: 57 Thanks: 5 Thanked 5 Times in 4 Posts	Heater Matrix I have to replace my heater matriix owing to leaks from it. My car is a 1999, diesel, LHD, 2.0, CDT, manual. I read the excellent item on Heater Matrix removal, but I'd like to know if there is anything holding the Matrix into the heater module except the screws (2) holding the pipes together against the module??? If I remove those 2 screws and split the pipes will the matrix just slide out? Any input is always welcome as I'm out here in Spain, Costa Blanca. Last edited by Siestaman; 21st November 2018 at 15:40.. Reason: more info

2nd December 2018, 09:05	#4
Siestaman Regular poster Rover 75 Join Date: May 2018 Location: Beniganim, Spain Posts: 57 Thanks: 5 Thanked 5 Times in 4 Posts	Help Well I managed to remove the matrix and to do it without damaging the pipework. However, getting the new one in has been a real B*** Ache. After hours of struggling I got the bottom pipe to mate up with the matrix and managed to get the clip in place, securely, I hope. The reasoning that i did the lower one first was that it would help bring the top pipe closer to the matrix. Now I find that the clip for the top pipe has only marginal movement available and the pipe/matrix are not mating. I can't get into the space properly to secure a good mating. Any help on how to get the top pipe to move to join the matrix would be very welcome. I have limited tools available to assist me though. No clamps or compressors. Just everyday DIY tools. Thanks again. Last edited by Siestaman; 2nd December 2018 at 09:18..

21st November 2018, 17:12	#2
Heddy This is my second home None Join Date: Feb 2013 Location: None Posts: 5,556 Thanks: 465 Thanked 1,161 Times in 924 Posts	Yes, that's it. It just slides out. A word of warning, the wrap around clips are pretty awful, be careful not to distort them and be sure pipes are pushed fully home as you re-tighten them.

21st November 2018, 21:17	#3
Siestaman Regular poster Rover 75 Join Date: May 2018 Location: Beniganim, Spain Posts: 57 Thanks: 5 Thanked 5 Times in 4 Posts	Thanks Heddy. For such a complicated piece of vehicle it's nice to find something relatively simple. Shame the guy who placed the clutch master cylinder wasn't so helpful, or the guy who designed the in tank fuel system, or the guy who placed the ECU in such a stupid spot. What a nice surprise! Thanks again.

2nd December 2018, 13:17	#5
Heddy This is my second home None Join Date: Feb 2013 Location: None Posts: 5,556 Thanks: 465 Thanked 1,161 Times in 924 Posts	Hiya, really feel for you having done this job. I'm sure some members have cut the pipes and joined them with jubilee clips and rubber hose. So tight in there, can't find pics but maybe someone else can. A dremmel or other tool may be useful, or even a pipe cutter. Obviously, I'm not suggesting you do this because you can end up with even more trouble. This will bump the thread to the top for a while so maybe someone can help.

2nd December 2018, 15:36	#6
Heddy This is my second home None Join Date: Feb 2013 Location: None Posts: 5,556 Thanks: 465 Thanked 1,161 Times in 924 Posts	Hiya, if you're gonna take the route of cutting the pipes and fitting pieces of hose, then this may help https://the75andztclub.co.uk/forum/s...51&postcount=1

3rd December 2018, 16:53	#8
COLVERT This is my second home R75 Saloon. Join Date: Feb 2009 Location: France/or Devon. Posts: 14,003 Thanks: 3,851 Thanked 2,167 Times in 1,816 Posts	I too would go for 'cut the pipes and fit the hoses'. In the long run faster and quicker. Also playing with the original pipes can still end you up with coolant leaks.----

9th December 2018, 10:00	#9
Tdr007 Newbie 75 Join Date: Jun 2018 Location: Brighton Posts: 3 Thanks: 0 Thanked 3 Times in 2 Posts	I’ve done this. I realised pretty early on I wasn’t going to get them back together with the clips. I cut the flanges off both ends and used 16 or 18 mm heater hose and four small jubilee clips. Tighten them up and applied sealant. It leaked a bit after a few days but tightened up the clips.

9th December 2018, 13:55	#10
Siestaman Regular poster Rover 75 Join Date: May 2018 Location: Beniganim, Spain Posts: 57 Thanks: 5 Thanked 5 Times in 4 Posts	That's what I'll do then. Thanks to all. I'm back in UK for Xmas in a couple of days, so it'll have to wait until I get back in mid January. I'll keep you all updated next year. Thanks to everyone for all the input. If the Mondeo 4 is worse positioned I'd be gobsmacked. Thanks Vanbursta.