MarkS1966

I've owned my Sapphire Cosworth since 1995. She was garaged in 2000 until last month and now back on the road - it's as much fun as I remember ! The problem is that the heater isn't working, the fan blows but always cold air even when engine up to temp.

I've taken the hoses off the heating matrix and flushed through and although the water was discoloured to start, it now runs clear but still blows cold.

Has anyone got any ideas of what to try next ?? Any help appreciated !

paulsheerin

Could be a jammed thermostat. worth taking it out seeing as its been sat for so long and testing it to see

costina

iTrader: (1)

where are you in Wiltshire?

Are the matrix pipes hot too? if not oil modine could be blocked.
if they are hot then the heater flap is jammed in the cold position

Regards

Paul

MarkS1966

Thanks for your comments !

I've just checked with mechanic who got her going and he put a new stat in so doubt if it's that.

Matrix pipes do get hot but i think it's heat transferred from exhaust manifold.

I'll check oil modine.

You can hear the heater flap move when you move the control on dash so again, doubtful.

I'm just outside Warminster..

Again, many thanks

Cossie Sean

i bought a New matrix for mine as i was having the same problem last week

an hour or so to fit and the heaters are burn your hand hot now

New Valeo (Genuine) ones are Ł35 from Euro Car Parts

MarkS1966

Could it still be matrix even though i flushed it through and it runs clear ?

costina

iTrader: (1)

Your a bit far from me. Hope you get it sorted as sean said could be matrix and 35 pounds would be a fairly cheap fix.

Cossie Sean

yes mate, i flushed it several times, especially if water is manky!

i would also check the pipe that goes over exhaust manifold goes to top pipe as some tit pixed my 2 up lol

MarkS1966

I'll check pipes and if they're ok, I'll order a new matrix and give that a go.

Thanks all for your help !

Mike Kerbey

iTrader: (1)

Water pump?

MarkS1966

Don't believe it, went to work and heat started to come through heater. Haven't had time to look at matrix, pipes or pump. Perhaps it was a blockage or air in system somewhere but whatever it was has cleared - strange !

costina

iTrader: (1)

cheap fix then

Cossie Sean

Perfect!!

Enjoy bud

carl/saff

i would flush the coolant system .....