Heater Matrix Fault...?

AlexxLush · Mar 10, 2010

Hi, am I right in thinking that I can diagnoise a possible faulty heater matrix by joining the inlet and outlet pipe; completely by-passing the matrix?

If anyone has done this before could you please let me know what you used to join the 2 pipes i.e the thickness of joiner used etc...

Many thanks.

fett · Mar 10, 2010

Whats the symptoms?

AlexxLush · Mar 10, 2010

fett said:
Whats the symptoms?

The dreaded overheating - the header tank boils up after about 5 miles.... I've had the head gaskets done, changed the stat, flushed and backflushed, and changing the water pump are rad tomorrow. After that the only thing I could think of is the heater matrix as I dont get any hot air out of vents. I was thinking about joining the inlet and outlet pipes isolating the matrix to try and test it... is this a good or bad idea?

fett · Mar 10, 2010

Sounds like A good idea, but I have a partially blocked matrix from two cans of Kseal but it never overheats so I am not sure if that ur prob , u may as well try it though as its free!

AlexxLush · Mar 10, 2010

fett said:
Sounds like A good idea, but I have a partially blocked matrix from two cans of Kseal but it never overheats so I am not sure if that ur prob , u may as well try it though as its free!

Im thinking along the lines of if it is partically blocked then the water flow wont be as good meaning overheating.....

lro2006 · Mar 10, 2010

what engine is it i have the same problem in my td5 but mine keeps spitting the water back out i have changed the water pump thermostat rad rad top hose and am going to do the matrix the morn. i have been told that it could be the head has a crack in it on the inlet side and is drawing air in thruogh there the heater is the highest point in mine so it is airlocking

AlexxLush · Mar 10, 2010

lro2006 said:
what engine is it i have the same problem in my td5 but mine keeps spitting the water back out i have changed the water pump thermostat rad rad top hose and am going to do the matrix the morn. i have been told that it could be the head has a crack in it on the inlet side and is drawing air in thruogh there the heater is the highest point in mine so it is airlocking

Mines V8 4.0. Ive had my heads done, I am just hoping its not the block.

wammers · Mar 11, 2010

lro2006 said:
what engine is it i have the same problem in my td5 but mine keeps spitting the water back out i have changed the water pump thermostat rad rad top hose and am going to do the matrix the morn. i have been told that it could be the head has a crack in it on the inlet side and is drawing air in thruogh there the heater is the highest point in mine so it is airlocking

Whoever told you that is talking rubbish. If you had a cracked head inlet side you would be sucking water out of cooling system into engine. The cooling system cannot suck air in. You would have clouds of steam from exhaust. The only things that can cause over pressuring of the system is an air lock (air expands greatly when heated) causing a hot spot within the engine. Or a leak from a cylinder usually via the head gasket. Or a system that is blocked in some way preventing water circulation.

Heater Matrix Fault...?

AlexxLush

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fett

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AlexxLush

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fett

Well-Known Member

AlexxLush

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lro2006

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AlexxLush

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wammers

No longer with us, RIP

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