Heater/Blower problems causing ignition problems.

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RK1
E30 Zone Newbie
E30 Zone Newbie
Posts: 25
Joined: Mon Aug 24, 2020 8:37 pm

Mon Jun 14, 2021 7:54 pm

BMW e30 320i engine running nicely. After about 5 mins I checked I played with the heater/blower. Turned to highest setting. Could hear a buzzing noise but blower wasn't working. Not a surprise as it was on its way out. What did surprise me is the engine completely cut out. Like the battery had been removed from car. Nothing was working. Played around with the positive on battery and car did come back to life ( position 1 on ignition). When I tried to start car, car cut out again.

Have no idea what's going on.

Appreciate any help with this.

Thanks.
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Brianmoooore
E30 Zone Team Member
E30 Zone Team Member
Posts: 49358
Joined: Mon Jan 10, 2005 11:00 pm

Tue Jun 15, 2021 2:04 pm

Check all battery connections, including main leads at both ends and body to engine earth strap, PROPERLY.
Note that a bad body to engine strap on a facelift 6 pot can cause terminal damage to the engine wiring loom.
Blowers on E30s don't go "on the way out" - they just suffer from lack of maintenance.
RK1
E30 Zone Newbie
E30 Zone Newbie
Posts: 25
Joined: Mon Aug 24, 2020 8:37 pm

Tue Jun 15, 2021 5:52 pm

Issue was the battery connection - problem fixed.

Will take out blower and try to clean - thanks
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