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Day: January 27, 2009

Winter Olympics… in a Saab…

saabwinter

Yeah, the snow finally got here.. On the way to work I was remembering my earlier years in old cars during the 60’s. Everything was rear wheel drive and had a V-8. Also usually had bad tires too so that you ended up with one wheel drive, and that was the bad wheel. To get to work in the snow it was usually balls out and out of control..

My Saab, on the other hand, couldn’t be a better snow car. Cars with front wheel drive (which most are now, none then) are good anyway because all the weight of the engine is over the drive wheels. But you add snow tires and an electronic winter driving program and you’re pretty unstoppable. And if ice really becomes a problem some studs will solve that.

Most people think abs is unhelpful in the snow, and it doesn’t really help you stop when it’s real slippery but it does allow you to steer somewhat (although more like a boat than a car). And with front wheel drive you can also use the throttle to steer… push on it and you go wide, let off and it tucks in. Kinda fun in the slippery white stuff.

Another thing us old Saab guys used to do is spin around in parking lots. Just put your car in reverse, crank the wheels hard over and hold them there and blast the throttle for as long as you can stand it. Kind of like the air force’s centrifugal tester, the car’s rear end stays planted and the front swings around in fast circles. That will make you dizzy, but make sure you have lots of room…

And it’s off to the Olympics!

Saab control units, then and now…

I’ve got the control unit blues lately… Trying to replace them is getting to be a pain. There always seems to be some kind of problem and it always ends up being faulty or wrong software.

My latest problem is with this new Saab. But while working on it I did notice a few things. These modules have gotten really small. This generation, called ME9, does a lot more processing than the old Trionic, and a lot faster too.

controlunit1
Trionic on left, ME9 on right

The other thing is they don’t need to be protected from the weather any longer. This module is bolted onto the engine. The old T7 was either inside the car in the kickpanel or in a protected area under the hood. I even found a control unit under the car on the rear end on our new Xdrive cars (4WD).

controlunit2
control unit installed on engine..

These modules seem more durable and robust than ever before… however they still need software…

greg

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