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Saab 9-3 Sports Saloon/Sedan, Combi & Convertible Workshop Saab 9-3 Sport Saloon/Sedan, Combi & Convertible (MY: 2003 - Present) Technical Forum

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  #1  
Old 11-06-12
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murphydog murphydog is offline
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Default violent juddering
On my way home from work this morning my 2.0T Aero started to judder (pos mis fire) and over boost right passed the 3rd red line on the turbo guage. Any ideas to what the fault is?
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  #2  
Old 12-06-12
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saabhutter saabhutter is offline
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Quote:
Originally Posted by murphydog View Post
On my way home from work this morning my 2.0T Aero started to judder (pos mis fire) and over boost right passed the 3rd red line on the turbo guage. Any ideas to what the fault is?
Ignition coil.
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  #3  
Old 12-06-12
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^^^^ ditto..

plug in a code reader to see if any codes are stored..
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  #4  
Old 12-06-12
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Default re
Soumds like overboost and hitting fuel cut out.If it was my car Id say bcv Im not sure on the newer ones ,might be the same.Try cleaning it.
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  #5  
Old 12-06-12
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Thanks for the suggestions and will see if the local garage can get the codes up? If not its a 20 mile trip to the nearest saab specialist! Would a coil pack cause it to over boost?
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  #6  
Old 12-06-12
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just pick up one of these..http://www.machinemart.co.uk/shop/pr...lt-code-reader

or just search for sealey VS8699 same reader for about £20-35
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Last edited by aerojon; 12-06-12 at 12:21 PM.
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  #7  
Old 12-06-12
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bad coil? check plug gap. Gap to minimum .035mm Is it tuned? I broke a ring in my Aero w/ bsr stg1 getting on the highway,boost in the red. Same year as yours.
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  #8  
Old 12-06-12
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Broken ring!?! Ouch!!!! Yeah its got a maptun stage 1 tune. Just remembered that the maptuner can be used as an error code reader. Just checked and it says there's no error codes!
Its still over boosting if the loud pedal is floored but not when treated more gentle.
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  #9  
Old 13-06-12
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Quote:
Originally Posted by murphydog View Post
Broken ring!?! Ouch!!!! Yeah its got a maptun stage 1 tune. Just remembered that the maptuner can be used as an error code reader. Just checked and it says there's no error codes!
Its still over boosting if the loud pedal is floored but not when treated more gentle.
Yeah broken ring. Installed a motor out of an 06 w/ 10k less miles than original motor,found it a salvage yard 30 miles from the house. Cost me $2700 including install. Re-gap your plugs.
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  #10  
Old 13-06-12
chrism chrism is offline
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Default Similar Experience
Just went through the same sounding thing with my son's 9-3 SS. Slim chance it would be the same cause, but you never know.

Thread:
http://www.saabcentral.com/forums/sh...d.php?t=234471
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  #11  
Old 13-06-12
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I'm going to book it in at the local garage asap! May as well get them to sort the creaking when turning the steering wheel at the same time.
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  #12  
Old 13-06-12
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I'm going to book it in at the local garage asap! May as well get them to sort the creaking when turning the steering wheel at the same time.
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  #13  
Old 15-06-12
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Well had everything checked and all's OK tho new plugs fitted and now its all working fine tho still showing higher boost than normal!
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