The heater will only blow hot air when the car is at high speeds, soon as the car is stationary no air is coming out?
whats causing this? its getting colder now and my windscreen keeps steaming up so want to sort this asap!
cheers
Heater on working at high speeds?
Moderator: martauto
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Grrrmachine
- E30 Zone Wiki / Team Member

- Posts: 8043
- Joined: Sat Feb 09, 2008 11:00 pm
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A combination of a seizing up blower motor due to lack of lubrication, or a failing heater resistor, together with a charging system that isn't charging properly, and therefore can't supply enough juice to compensate.
Get a multimeter onto your battery terminals and find out what the voltage is at idle and at about 2000rpm.
Get a multimeter onto your battery terminals and find out what the voltage is at idle and at about 2000rpm.
'89 325i Touring | Touring Resto Thread | In-Dash Screen install
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Junglistjed
- E30 Zone Regular

- Posts: 472
- Joined: Sat Jul 13, 2013 11:00 pm
Will it be an expensive fix? ill try get hold of a multimeter asap
