Date: 27 Dec 2004 15:15:57 GMT
From: Dave Hinz <DaveHinznospamcop.net>
Subject: Re: 91 900 wont start


On Sun, 26 Dec 2004 19:46:02 GMT, James Sweet <jamessweetnospamail.com> wrote: > > Yeah that's something I commented on too, but a new battery is the place to > start if the old one is too dead to take a charge, then one needs to measure > the current draw with everything off and then check the voltage with the > engine running. But, he could do that with the old, mostly-dead battery, right? We can get voltage on it, just not current capacity. Voltage is all we need for this test, we don't need the 600 cold cranking amps or whatever. > Only tool required is a cheap DMM. ...unless the car draws more than the 2 Amps the fuse in the DMM blows at. Been there, done that. On my '88 900 Turbo, it was the "mouse belts". But, with a supply of those fuses, that _is_ one way to check which circuit the load is on; pull all the fuses (note where they go!), put them back in one at a time, and when the AMM shows a jump in current (or the fuse pops), that's the problem circuit. Fun times... Dave Hinz

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