2005 Saab 93 2.0t sometimes won't start or hard to start then run rough before running normally. Excess fuel from tailpipe or strong fuel smell. Something sticking causing an overly rich condition?

SOURCE: 900 Saab V6 extended cranking time

Hi, have you checked or replaced the oxygen sensors?

SOURCE: Extended starting time

Sounds like an ignition problem..
The Direct Ignition module in the turbo model can fail but is easily tested and replaced.

Remove turn the , Direct Ignition module put the spark plugs in the holes, ground each plug to the negative battery terminal by use of a wire about 2 feet long and stripped at each plug. Crank over the engine over watching the spark plugs. If there is a problem with the cassette, one of the plugs will have no spark or a very weak spark. Also, when you turn the ignition key off there should be a shower of sparks that runs all of the plugs simultaneously several times.
DANGER BE CAREFUL ! ! ! EXTREMELY HIGH VOLTAGE! There have been occasions when the Direct Ignition module would test ok when turned upside down but would fail when turned back over to install into the valve cover ?
Also: Oil leakage from the individual coils of the Direct Ignition module have also been a problem. Oil leaks can be identified by noting that there is oil surrounding spark plug hole.
Hope this helps.
Cheers MMP

SOURCE: saab 9000 cse turbo

Hi Steve,
I had a similar problem on a full pressure SAAB 9000. With me it only happened under hard acceleration, and it was caused by the Waste Gate Controller being sticky and over-boosting the engine to the point where the overpressure switch came into play - this cuts out the engine till the pressure drops to a safe level again - hence the sudden loss of power. On the full pressure turbo's you get a boost gauge so you can see it happening, but I don't think the LPT's have one fitted - so its probably a garage job - otherwise Saab9000.com will show you how to test it yourself.

Regards

Hugh

SOURCE: Jeep running rough; black smoke from tailpipe; dying occasionally

Have you taken a spark plug out yet? You may have fowled them out. if they are not clean and have a whitish tone to them, then they need to be replaced.

SOURCE: Saab 9000 97 hard to start, once started fine

if you turn all the accesories and if your headlights dim and ur inside lights dim and or ur car shuts off you may need a new altinator