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saab 900s '96 battery drain

Hi,

I own a Saab 900s from 1998 (model '96) which drains the battery in 6 or 7 months. The car functions without problems and doesn't indicate a problem in the battery until one day it doesn't start the engine. I bought it second hand with a 55 amps battery. When the battery became dead, I bought a 72 amps battery hoping it will last more, but it lasted only 7 months. Now I have bought a Bosch battery for it, and Bosch says that the correct one is a 55 amps battery. Now I fear that in a few months the new battery will be dead also, but I also fear to explain this to the Saab Service because electric problems are difficult to find and perhaps they charge a lot for finding the problem and they are nor able to solve it. Did you have this problem with your Saab and find the reason?

Thanks in advance and kind regards from Barcelona, Spain,

Oscar

Reply to
Oscar Garcia
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Something is not switching off. First step is to measure how much current the car is drawing, and then to remove one fuse at a time until you see a dramatic drop in current. When you find that, you know what to fix. Not many circuits should be active when the car is off; either one is staying active when it shouldn't (not likely), or one of the circuits which is normally on when the car is off is the problem.

Until you know which circuit it is, there's no further to go.

Dave Hinz

Reply to
Dave Hinz

Hello, Oscar,

I was doing a research trying to understand whether my battery is just old an needs to be replaced, or whether there is an electrical problem, and a search on Google on "Saab Battery" brings some interesting links. For example:

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gives a long list of battery problems shared between Saabs and Acuras (a brand name for high-end Hondas in the US) with the same Bosch electricals. Thanks,

-Dima

Reply to
Dima

" 1992 Saab 318i models ..." There is no Saab 318. There IS a BMW 318 though....

" Some 1982 Saab Accords ... "

-> There are no Saabs like these, there are Honda's like these though....

"Owners of 1994 XJ6s and XJ12s "

-> There is no Saab XJ6 or 12. There is Jaguar XJ6 though ...

" Owners of Saab 911s "

-> There is no Saab 911, there is Porsche 911 though ...

But there is useful info in that article, just forget the Brand specific info.

Regards, Richard.

Reply to
Richard NL

Richard,

There is a lot of confusing naming in the article, I agree, but the information is useful nonetheless.

-Dima

Reply to
Dima

------------bullshit snipped-----------

------------END of Bullshit-----------

Check the current (amps) output of your alternator, if there is no current output, or too small, you have a blown diode in the diode trio.

Reply to
zork

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You're still bored, eh? And you still don't know the difference between a load not shutting off, and a charging problem.

Reply to
Dave Hinz

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