Heater are stuck on warm
Moderator: martauto
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strictlyxsi
- E30 Zone Newbie
- Posts: 42
- Joined: Mon Dec 05, 2011 11:00 pm
Hi i brought my e30 about a month ago and i've noticed the heaters are stuck on warm/hot when on cold. Has any one got any idea why this happens?
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Brianmoooore
- E30 Zone Team Member
- Posts: 49360
- Joined: Mon Jan 10, 2005 11:00 pm
There's an electric water valve on the LH side of the heater pipe, which should shut the hot water flow to the heater matrix off completely when the knob is set to full cold.
Check for power at the plug to this valve by removing the plug from the valve and connecting a 12 volt bulb of at least 5W across the pins of the plug.
It should light when the knob is at full cold and the ignition on.
Check for power at the plug to this valve by removing the plug from the valve and connecting a 12 volt bulb of at least 5W across the pins of the plug.
It should light when the knob is at full cold and the ignition on.
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strictlyxsi
- E30 Zone Newbie
- Posts: 42
- Joined: Mon Dec 05, 2011 11:00 pm
Ok cheers for the help will try it on the weekend.
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Billwill
- E30 Zone Regular
- Posts: 363
- Joined: Sun Jun 26, 2011 11:00 pm
- Location: South Africa
What Brian said^^^
I know on my M40 there is a seperate fuse all by itself sitting just above the valve so if you do not have power on the plug have a look if your E30 has that fuse there.
I know on my M40 there is a seperate fuse all by itself sitting just above the valve so if you do not have power on the plug have a look if your E30 has that fuse there.