heater matrix problem help needed!!

matty940 · Dec 5th, 2010, 10:24

hi my heater matrix on my 940 has packed up i have discnnected the the 2 pipes to stop the car filling up with steam however the coolant is still leaking from where the pipes were connected and also from under the bonnet where the back of the heater matrix

until i get the matrix replaced how do i stop the coolant leak?

thanks in anticipation

OldBlueVolvo · Dec 5th, 2010, 10:56

Can you blow through the top connector to force out the coolant? I did this and also joined the two hoses together with a plastic hose connector.

NI_Volvo_Nut · Dec 5th, 2010, 11:23

Are you sure its the matrix and not the heater valve?

matty940 · Dec 5th, 2010, 11:40

i have joined the 2 hoses together

could be the heater valve but i am not too sure where that is ? is it on the engine side of the glove box if that makes sense

OldBlueVolvo · Dec 5th, 2010, 12:35

I think there are two possible locations for the heater control valve. On mine, it is just to the left of the clutch pedal.

CTCNetwork · Dec 5th, 2010, 12:55

Hi,

This will very much depend on whether you have AirCon or not. With AirCon fitted the heater control valve is actually in the engine bay and almost under the inlet manifold (and a right bugger to change too!)

If the HCV is inside then, as mentioned it will be at or about the drivers side and near/above the clutch pedal - or where that would be if you have an auto..

It will also be worth pulling your carpets as there is also a foam and rubber section and that just loves to absorb coolant and keep hold of it!!

Des. . .

Dec 5th, 2010, 10:24	#1
matty940 New Member Last Online: Dec 5th, 2010 13:09 Join Date: Dec 2010 Location: maidstone	heater matrix problem help needed!! hi my heater matrix on my 940 has packed up i have discnnected the the 2 pipes to stop the car filling up with steam however the coolant is still leaking from where the pipes were connected and also from under the bonnet where the back of the heater matrix until i get the matrix replaced how do i stop the coolant leak? thanks in anticipation

Dec 5th, 2010, 10:56	#2
OldBlueVolvo VOC Member Last Online: May 4th, 2023 20:38 Join Date: Nov 2007 Location: West Sussex	Can you blow through the top connector to force out the coolant? I did this and also joined the two hoses together with a plastic hose connector. __________________ William 745 GL - 1986, B230K 745 GLE - 1987, B230E

Dec 5th, 2010, 11:23	#3
NI_Volvo_Nut Volvologist Last Online: Dec 6th, 2023 11:13 Join Date: Aug 2008 Location: Bangor - Norn Iron View Photos By: NI_Volvo_Nut	Are you sure its the matrix and not the heater valve? __________________ What's the matter with the car I'm driving? Can't you tell that it's out of style? Should I get a set of white wall tires? Are you gonna cruise the miracle mile?

Dec 5th, 2010, 12:35	#5
OldBlueVolvo VOC Member Last Online: May 4th, 2023 20:38 Join Date: Nov 2007 Location: West Sussex	I think there are two possible locations for the heater control valve. On mine, it is just to the left of the clutch pedal. __________________ William 745 GL - 1986, B230K 745 GLE - 1987, B230E

Dec 5th, 2010, 12:55	#6
CTCNetwork Forum Support Team Join Date: Dec 2004 Location: Liège, Belgium View Photos By: CTCNetwork	Hi, This will very much depend on whether you have AirCon or not. With AirCon fitted the heater control valve is actually in the engine bay and almost under the inlet manifold (and a right bugger to change too!) If the HCV is inside then, as mentioned it will be at or about the drivers side and near/above the clutch pedal - or where that would be if you have an auto.. It will also be worth pulling your carpets as there is also a foam and rubber section and that just loves to absorb coolant and keep hold of it!! Des. . . __________________ Density:- Not just a measurement ~ It's a whole way of Life.! ! ! I drive a Volvo, Please Don't Get In My Way! OldVolvos4Ever He shows up. People die. He vanishes. People should not be afraid of their governments. "He'll deliver more justice in a weekend than 10 years of your Governments should be afraid of their people... "V" courts & tribunals. Just stay out of his way." "I plan to."

Dec 5th, 2010, 11:40	#4
matty940 New Member Last Online: Dec 5th, 2010 13:09 Join Date: Dec 2010 Location: maidstone	i have joined the 2 hoses together could be the heater valve but i am not too sure where that is ? is it on the engine side of the glove box if that makes sense

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