Flucker01

As above, my heaters dont heat up. They blow air at me but whether I set it at hot or cold, its still cold. VW forum's suck baws and no one helps at all.

Anyone got any ideas?

studabear

are the pipes upto the bulkhead getting hot?

Flucker01

They're getting warm but not hot. Certainly not as hot as I expect they should be.

studabear

could be a few things, hows your temprature gauge behaving?

could be a stuck open thermostat, but eventually this would get warm
water pump could be fubar'd
heater matrix could be blocked
heater valve might be knackered, can't remember its location

Drayton

Had the same problem when I first bought mine a few years back but that was due to the heater matrix being knackered. If the feed pipe to the matrix is hot but return is cool then thats your problem. Was easy to replace behind the dash so should be no problem but thats if that is whats wrong. The system could just need a flush or could be a problem somewhere else but matrix is usually most likely.

Flucker01

My initial thought was heater matrix. The temperature guage is spot on. I'll have another look after I take it a run.

studabear

You could try back flushing the matrix, but if its knackered its usually a replacement job

Daveyboy

as above - heater matrix is prone to going on these. check passenger footwell for damp.

Flucker01

Thanks for the help guys, now I have a bit of a clue on how to start this.