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Discussion Starter #1
Hi All,

I have come to a dead end currently on my 2008 Saab 9-3 Cab in trying to figure out what is causing a rev drop. If this was an older pre 2003 I would have said it was a blocked PCV valve or tube but that isnt the case here. Scenario is as follows:

Normal city driving around 35 MPH
Slow to stop for traffic lights
As I come to a halt the rev drop to around 800-100
When I stop the revs drop to around 500 nad the car is on the edge of stalling.

Anyone have any ideas?

This one has had an LPG conversion in case this makes any difference.

Thanks for any advice or recommendations

Cheers

Les
 

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20,204 Posts
Fueling or vacuum issue. Get something that can log fuel trims/AFR and see what it's doing.
 

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Discussion Starter #3
Thanks , I will give it a shot. It seems my OBD reader doesnt like the Saab. It has worked ion most other ars but cant seem to connect to the ECU. I will cast around and see if I can find another try it out.
 
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