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Alas, I do not have any repair manual for the 86 735i (I am not sure if any exist?). Hence the what is this question...
When I turn the key to ignition on I hear a pump start up - it is quite loud. It is located just in front of the coollant reservoir. It is black and has a plastic shell.
I can also hear at when I am driving off or at idle. I can't make out the noise when 'cruising'.
Appreciate the help.
Hanif.