Saab 9-5 wagon ignition problem

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Paul - 08 Apr 2006 20:08 GMT

I have a 2000, Saab 9-5, wagon, 3L V6. The vehicle has developed a strange
problem which I would like to know if anyone else has experienced.

The problem occurs when the vehicle is running. The engine will sometimes
shut off on it's own. To be more specific when approaching a stop sign or
when the vehicle is about to stop the engine stops running. Sometimes
trying a restart works but usually what happens during a restart is the
vehicle will crank without starting. If I leave it sit for a few hours the
car will restart.

Running at highway speeds does not cause the engine to shut off.

Is this the beginning of an ignition system failure? Would a trouble code
scanner help me understand what the problem is?

Thanks,
Paul

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Gary Fritz - 10 Apr 2006 22:07 GMT

"Paul" <candiapa@earthlink.net> wrote:

> The problem occurs when the vehicle is running. The engine will
> sometimes shut off on it's own. To be more specific when approaching
> a stop sign or when the vehicle is about to stop the engine stops
> running.

This is probably not relevant because it happened in a 2002 9-5 Aero, which
has a different engine. But I had nearly the identical symptoms. In
addition the "check engine" light went on. Since I was about 1 mile from
the dealership at the time, I took it right over. Described the symptoms
to the service mgr and he said "Sounds like the throttle body to me." I
had no idea what a throttle body was, but apparently it's the controller
for the "fly-by-wire" throttle control. He hooked up the TechII and it
confirmed his diagnosis.

He popped the hood and pointed it out. "Damn," sez I, "that's a $500
part." He went inside to work up the estimate: parts + labor = $504.
*sigh* It's a bad sign when you can guess repair costs that close...

Gary

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