Question about 2002 BMW 3 Series
It appears that your alternator is not charging so that the battery has been totally discharged. A boost start got you going again but with no charging as you drive it was only a matter of time for any slight charge to be used up. To get you going again temporarily have another vehicle give you a boost but leave their vehicle connected for at least 15 minutes with their engine running at a fast idle. This shiuld give you about 1 hours running providing you dont turn off the engine. Have the alternator output checked by an auto electrician.
Posted on Aug 31, 2010
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Posted on Jan 02, 2017
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not starting or turning over indicates towards multiple possibilities. It can
be issue with battery or weak battery. But if battery checks out ok, then it
can be starter issue or faulty alternator or problem with low fuel pressure or
no spark at spark plugs due to dirty spark plugs or faulty ignition
coil or injectors getting cracked or dirty and needs to be cleaned.
confirm the problem, the basic troubleshooting is required.
this link below and follow the troubleshooting:------
This will help.
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