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2nd November 2020, 19:48 | #1 |
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Rover 75 saloon Join Date: May 2019
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Blocked Heater matrix
Hi all,
My heater matrix is getting really bad now only have warm air coming off just the drivers side passenger and rears have gone completely cold so it's high time I get this sorted. So I would like to know your suggestions on how to best tackle this. The car has had the heater matrix replaced a couple of years ago by the previous owner my guess is it was probably a duff used one clog up this fast. From my reserch so far a lot of people are in favour of flushing it in the car but on my v6 I cant see an easy way to get access to the heater hoses. On the hand it looks quite easy to get the heater matrix out of the car but I've read the horror stories of trying to seal it back up. Also would it be worth it biting the bullet and going for a new one ? Rather trying to flush this one only to have it clogging back up later down the line. Additionally, is there a way of doing it without draining the cooling system fully I can only really see the top hose that I could clamp. Lastly, should even bother trying to sort it myself all together or is it a job perhaps better leaving to a garage to sort ? |
3rd November 2020, 07:22 | #2 |
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I have a very good used aftermarket heater matrix for sale in my shop.
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Lest we forget..
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3rd November 2020, 14:30 | #3 |
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Are you sure it's the heater matrix that is blocked ? I replaced my heater matrix with a brand new unit on my V6 when my heater wasn't working but it turned out to be the engine oil cooler that was clogged solid on mine and that was stopping a good flow of coolant going through the heater matrix
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7th November 2020, 17:53 | #4 |
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I can confirm it's the heater matrix ordered a new oil cooler hooked it up left the car to warm up to 90c made sure the system was bled and still getting cold on the passenger side so I do have a blocked heater matrix unfortunately
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7th November 2020, 19:40 | #5 | |||
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Quote:
Quote:
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Definitely not. They'll tell you that your head gasket's gone! Simon
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"Whatever is rightly done, however humble, is noble." Sir Henry Royce. Last edited by SD1too; 7th November 2020 at 19:42.. |
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23rd November 2020, 09:58 | #6 |
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As of yet I didn't have chance to get the heater matrix flushed but I'm staring to think that is not the whole side of the story now that weather is getting colder the car is struggling to stay at 78C° it many times drops at 75 if I'm on the motorway so I'm thinking my new thermostat is bad
Last edited by thanos.m; 23rd November 2020 at 10:26.. |
23rd November 2020, 17:02 | #7 | |
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Quote:
Go sort out your spanners.--- |
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23rd November 2020, 17:22 | #8 | ||
Doesn't do things by halves
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Quote:
Quote:
Simon
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"Whatever is rightly done, however humble, is noble." Sir Henry Royce. |
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24th November 2020, 17:44 | #9 |
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I'm not saying that the heater matrix isn't blocked that for sure is but it's also but as colvert just adds to it. I use the onboard diagnostics I pretty much have engine temp on every long trip. Last long trip was on Sunday I went to pick up another v6 75 we had the temp reading on that one as well and dispite being 2C° outside that had no problem staying at 90ish mine on the motorway was dropping at 75C° and the heater was getting quite cool even from the drivers side. So a thermostat is on the way so once I have it I'll get all done at once
Last edited by thanos.m; 24th November 2020 at 17:47.. |
24th November 2020, 18:19 | #10 |
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Try this.
I've just unblocked a matrix that was hard to clear, I filled it half full of hot water, and then holding it between the pipes and wearing a thick glove I wafted a blowtorch over the fins. I found that with the water inside it cleared once it was boiling, you can hear it expanding rapidly and then the water pushes the crud through, repeat the process two or three times and the water becomes clear. It's made an old and very clogged matrix clean again.
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