engine stall on idle

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engine stall on idle - 4/13/2008 9:21:16 AM    nbsman Posts: 59 Joined: 12/24/2007 Status: offline This happends once or twice a week ,but yesterday it happened 4 times it just shuts off on the red light ,so on the idle (never happened when car is in motion) rpm's are dropping down from 1000 and it seems like engine don't have enough fuel or air in the mixture,sometimes rpms dropping down and engine is almost stalling but it gets back spinning at 1500 2000 for the first 2 seconds or so then returns to 1000.It mostly happends right after stoping at the red light,when i push brakes ,right before stop rpms arer getting lower than 1000. I'm trying to figure this out ,have new fuel filter to change ,but t most likely that engine don't have enought of air or it's pressure,there's sucking noize that my mechanic noticed when i took my car fo the checkup,maybe something wrong with MAF censor ,i'm not too familiar with saab engines and don't have repair manual ,so maybe you can help me figure it out. Thanks _____________________________ 1999,9-3SE,4Dr,Manual. Post #: 1

RE: engine stall on idle - 4/13/2008 10:27:11 AM    Roto Posts: 1082 Joined: 12/18/2006 Status: online clean the IACV first _____________________________ 1999 Saab 9-3 5-door. She's back and better than ever Philly Region Autocross (in reply to nbsman) Post #: 2

RE: engine stall on idle - 4/13/2008 10:43:18 AM    nbsman Posts: 59 Joined: 12/24/2007 Status: offline So i think this is Idle Air Control Valve ,but where it located? _____________________________ 1999,9-3SE,4Dr,Manual. (in reply to Roto) Post #: 3

RE: engine stall on idle - 4/13/2008 11:53:32 AM    Roto Posts: 1082 Joined: 12/18/2006 Status: online When you take the plastic cover off it's right next to the TB, looks like a silver cylinder with two hoses and a connector attached to it.  You can't miss it. _____________________________ 1999 Saab 9-3 5-door. She's back and better than ever Philly Region Autocross (in reply to nbsman) Post #: 4

RE: engine stall on idle - 4/13/2008 4:04:59 PM    nbsman Posts: 59 Joined: 12/24/2007 Status: offline went to look at it  _____________________________ 1999,9-3SE,4Dr,Manual. (in reply to Roto) Post #: 5

RE: engine stall on idle - 4/15/2008 8:33:48 PM    nbsman Posts: 59 Joined: 12/24/2007 Status: offline So cleaned it up with carb cleaner ,it was pretty dirty,broke PVC nipple at the same time ,(thanks god that wasn't serious),when started engine it was idling perfectly,but on my way home engine stalled once when iwas on the red light ,so maybe i should look for pressure leak or something else _____________________________ 1999,9-3SE,4Dr,Manual. (in reply to nbsman) Post #: 6

RE: engine stall on idle - 4/16/2008 5:29:46 AM    Roto Posts: 1082 Joined: 12/18/2006 Status: online Well while your PCV is broken you DO have a vacuum leak, however that should actually make the car rev higher... run a can of seafoam through the gas tank and see if anything changes.  Also check your plugs... _____________________________ 1999 Saab 9-3 5-door. She's back and better than ever Philly Region Autocross (in reply to nbsman) Post #: 7

RE: engine stall on idle - 4/16/2008 7:14:41 PM    nbsman Posts: 59 Joined: 12/24/2007 Status: offline seafoam is already there ,pvc nipple holds on crazy glue (still),new parts are about to come. What i noticed is when i'm pressing the brake rpms going down in 2 times out of 5.Will take it to the mechanic this week will se what he'll say. _____________________________ 1999,9-3SE,4Dr,Manual. (in reply to Roto) Post #: 8

RE: engine stall on idle - 6/15/2008 8:02:20 PM    gatr2000   Posts: 11 Joined: 2/23/2008 Status: offline same issue ..how can i raise the idle...car just rattles at 400 rpm at every stop. thx gatr2000 (in reply to nbsman) Post #: 9

RE: engine stall on idle - 6/25/2008 9:50:24 PM    gatr2000   Posts: 11 Joined: 2/23/2008 Status: offline no way to adjust idle? its like aguaranteed migrane after an hour at400 rpm thx  gtr (in reply to Roto) Post #: 10

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