[Jake&DawnChaboya]

So recently my 2003 9-3 2.0t se vert started smoking after warmup from under the hood if sitting still it goes into ac and stinks! I've looked under the hood and i think its coming from back of engine because there's oil allover the cat and its burning off so much I'm losing about allmost a quart per month. Any idea what this is? I'm tired of looking at smoke coming out from under my car and smelling it!

 

[dogboy58]

Could be something simple like the valve cover gasket. You just have to clean the engine really good and look really closely to see where it's coming from.

 

[jakejm79]

Oil pressure switch is tucked up above the starter and is prone to significant leaking. Also check the hoses for the PCV system, the catch can is on the back of the engine and if one of the hoses is leaking that could also be the source, but I would put money on the pressure switch.

 

[BobSaabit]

I'll double down on what Jake said... pressure switch most of the time. It was strategically positioned by Saab to drip onto the cat and smell bad when it leaks.