Toyota Repair: car wont start without a jump, negative battery cable, 1996 geo prizm


Question
Hey Mike - I have a 1996 Geo Prizm LSI (4L 1.8, 165,000mi auto trans) that just quietly died a couple of days ago.  No knocking no difficulty starting no obvious problems - but the car just turned off electrically while I was stopped at an intersection.  I got a jump. The car started right away without any stall or hesitation and went about 8 miles to work and "turned off" again.  

After 2 days of diagnostics at an auto repair shop - the techs jumped my car, returned it to me without charge because they couldn't figure out the problem.  They did however rule out the battery and alternator.  Their thinking was that my car has some sort of "massive" electrical draw going on that was not allowing the battery to hold its charge.

What comes to mind for you?

Answer
you need to take off the negative battery cable and jump a volmeter across. Put in the Amp scale.
Draw should be less than 1/2 amp, or 50 milliamp.
The draw coud be anything. No common problem Ive seen.
Then if you have a larger draw, you pull fuses out untill the draw goes away and that will isolate what circuit the draw is on and you can proceed.
wiring diagrams available on www.techinfo.toyota.com

Use 96 corolla, same animal.

Mike