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repl :1990 525i stalls after battery change



Is your idling very eratic after changing the battery?. When u disconnect
the battery,
the ECU 'forgets' it optimal settings like idling, etc. So what u need to do
is start the
car up and let it idle for at least 2 - 3 hours. The ECU will then learn
back the optimal
settings and idle smoothly again.

Rgds