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850 / S70 & V70 '96-'99 / C70 '97-'05 General Forum for the 850 and P80-platform 70-series models |
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Heater matrixViews : 1652 Replies : 16Users Viewing This Thread : |
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Oct 21st, 2021, 07:44 | #1 |
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Heater matrix
Hi there
I am contemplating doing a heater matrix change myself, seen a few American YouTube videos and it looks do-able Can I just ask you all a few questions: - when the matrix leaks, is it usually into the drivers' or passenger side? - is it ok to clamp off the rubber tubes on the bulkhead, as I have seen on YouTube? I'm not mechanically competent enough to drain all the coolant down - when I come to remove the matrix, which side will I need to pull it out from (passenger or drivers?) - is there a good place to source a new one, or do I just use eBay? OEM is Behr, is that right? cheers all
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Phil '98 V70 2.5T (manual '99MY) |
Oct 21st, 2021, 08:07 | #2 |
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- when the matrix leaks, is it usually into the drivers' or passenger side? Don't know
- is it ok to clamp off the rubber tubes on the bulkhead, as I have seen on YouTube? I'm not mechanically competent enough to drain all the coolant down Not recommended as you could damage hoses. - when I come to remove the matrix, which side will I need to pull it out from (passenger or drivers?) Driver side on RHD car - is there a good place to source a new one, or do I just use eBay? OEM is Behr, is that right? This one... Click Remember to order two new O-rings part# 3545586
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MY2010 XC90 SE (M66-manual) Magic Blue (467) Sold MY1997 850 GLT (62,000 miles) Silver Sand (419) MY2005 V70 2.5T (66,000 miles) Willow Green (471) Volvo 850 GLT website |
Oct 21st, 2021, 11:36 | #3 |
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It's okay to clamp the coolant hoses in the engine bay, saves draining it all down but there will still be water in the matrix so be prepared for this. The matrix is easier to remove from the passenger side, you will need new O rings as mentioned...
Check for any leaks before refitting the carpets etc Got mine from PFS... https://www.partsforvolvosonline.com...oducts_id=3634
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1998 V70 2.5 Auto & Supercharged Mercedes C Class... Last edited by volvo again; Oct 21st, 2021 at 11:39. |
Oct 21st, 2021, 12:45 | #4 |
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Just my personal experience-
Mine leaked into the passenger footwell I did it by clamping the hoses in the engine bay with no ill effects, if you are going to do the matrix draining the system is no more complicated than doing the matrix, just don't be heavy handed with the drain point on the bottom of the radiator, possibly best just to disconnect a hose. I took mine out from the passenger side (left in a RHD car), the tricky bit is the contortions of reaching into the car, over the doorsill and up under the centre of the dash. My matrix came from a respected local motor factor, so somewhere you think you can trust would do, the one Volvo again linked to at PFV is listed for £39.60. As already advised get the rubber O rings for where the pipes go into the matrix, quite often these are a cause of leaks, I got mine from the local Volvo dealership, I can't remember the price but less than a fiver for parts that would definitely fit.
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David V70 2.5 10v Torslanda Manual 98 Sreg |
Oct 21st, 2021, 13:34 | #5 |
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that's all really helpful, thanks everyone. I guess the PFS one is not Behr, but still decent quality.
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Phil '98 V70 2.5T (manual '99MY) |
Oct 21st, 2021, 16:28 | #6 |
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I'm not sure if your car will have the radio power amplifier wiring plug in the way for doing the job, my 1995 850 did. If so you just have to unplug it to get some more wiggle room to move things about. It was a bit of a pain in the butt to get plug off because of the angles but very doable.
Good luck, Its not as bad of a job as you think it will be. An old pillow over the door/sill area defo helps with the comfort of getting under the dash |
Oct 21st, 2021, 20:02 | #7 |
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Nissens is the only other make I would fit.
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Oct 22nd, 2021, 16:56 | #8 |
Grumpy Old Git
Last Online: Yesterday 15:52
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I did mine a few weeks ago. The matrix comes out of the PASSENGER side easiest - on a RHD car. You'll need to remove the radio amplifier if you have one fitted in front of the matrix like I did. I drained the cooling system entirely as I didn't want to clamp the hoses - they're around 25 years old and will have hardened. Its a good time to renew the coolant as well!
I fitted a NISSENS brand matrix - this comes with the 2x o-rings which is nice. I used those as they seemed to be of a decent quality and I haven't had any issues since (tempting fate?!!! ) Brief write up about it is here - https://www.volvoforums.org.uk/showp...&postcount=114 although I followed RobertDIY's youtube guide - https://www.youtube.com/watch?v=OdKzDfvOoQA . He offered a good tip about using a bag to catch the coolant in the matrix! Well worth watching IMHO HTH
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S40 2.4i '07 Japanese import '96 850R - https://www.volvoforums.org.uk/showthread.php?t=312484 Ex Danish Embassy '96 940 GLE LPT - https://www.volvoforums.org.uk/showthread.php?t=326071 Last edited by RollingThunder; Oct 22nd, 2021 at 16:58. |
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Oct 22nd, 2021, 19:01 | #9 |
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Not that bad
I've done this job three or four times now, and it really isn't too difficult.
They tend to leak into the left hand passenger footwell. You take it out on the passenger side. I clamped the engine bay hoses without any issues, but I do have a proper hose clamp. Remove the carpets as far as you can. Taking the matrix out results in spillage, which otherwise takes ages to dry out. Get new Volvo O-rings. Get a branded matrix. Cheaper ones have fewer channels and don't heat the passenger compartment so well. The ones I've had from PartsforVolvo were fine. The Eurocarparts one was rubbish. Fit a new thermostat whilst you're at it. Make sure you put back the little drain hose. You'll see what I mean when you get there! Hope that helps. Jack |
Oct 23rd, 2021, 23:40 | #10 |
Classic P80 1999 BiFuel
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Not sure if this applies to the OP's 98 car. You can't clamp hoses on a 1999 car, late cars are Aluminium.
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