Hello, I thought I'd throw this problem into this group to see if someone might be able to steer me in the right direction. So here's the problem: Several days ago I went out to the car (1985 300D in great shape) to leave for work. This car normally starts right up. This day it did not start. It made a buzzing noise from the dash area every time I tried to start it up. The lights, radio, and other electric items worked (but clearly with less power). When trying to start the car the there was clicking sound but no attempt to turn over. So at this point I figure the battery is too low to start the car. So a friend in her small two door nissan and I tried to jump the battery. After precharging my battery for 5 mintues and with her reving her engine I tried to start the 300D. It attempted to turn over but could not make it. So I called AAA who sent out a truck. With this attempt my car started right up with no hesitation. So it is the battery I presume. So I drive home, park, shut off the car and immediatly try to restart. Nothing! Not even an attempt to turn over. The next day I check the voltage differential between the + and - of the battery.
11.9 Volts. So last night I called AAA's battery truck who will come out for free and check the battery. They came out and tested the battery and told me it is in great shape. They do not feel I need a new one. So they got the started by attatching a portable battery. The car started easily. I drove it around for 15 minutes to charge up my battery. The guy had told me that he thinks it is the cold weather (46 F last night when he came by). He recommends that I get a block heater or park in the garage. I understand diesels have trouble in the cold and I have read in this user group that a block heater is a good idea but I thought when people talked about cold they were talking about 30 F or below. Now if it was not starting because of the cold then after driving around for 15 minutes the car should have been warm enough to start. Well the car did not start after if was well warmed. Immediatly after driving all I could hear when trying to start was that clicking noise. Not even an attempt to turn over.sorry for the long post. At this point I am curious. Is there an easy and safe method for checking the alternator? I feel maybe the battery is not charging (even though I do read close to 12V on the battery). What else could be going on? Should I drive around for an hour next time to charge the battery?
Thanks for any ideas that might help me trouble shoot this problem. Cable