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E34 (1989 - 1995)

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Old Yesterday, 01:47 PM
d0ugi3 d0ugi3 is offline
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Location: mass
Join Date: Feb 2014
Posts: 59
Mein Auto: 535i
Brake Fluid light and no RPMs ?

On to my second post of the day.

I have a 535i of the year 1990 ..

Recently my car has been doing this odd thing where the Brake Fluid light will come on steady and the RPM gauge will drop to 0 while i am driving about.

I have googled this issue and it appears to be a bad alternator or battery.


I have tested the battery at autozone while it was still on the car, but by the post under the hood not a direct connection to the battery its self.
I worked at an AZ and know that rear batteries are better tested on the posts then on the leads under the hood. or in this case back seat.

Now could this be a battery issue or an alternator issue .. or is this something else ?

P.S. just as an FYI, nothing else electrical in the car seems to be effected by the lights coming on, The car still starts, the electrical things still work nothing dims .. the only other issue is an heater issue that i posted about earlier today but they dont happen at the same time so i do not think they are linked.

Thanks again for any help you guys got ..
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