Viggen - Boost falling back to mid-yellow - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Viggen - Boost falling back to mid-yellow
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Posted by Rick C. [Email] (more from Rick C.) on Fri, 7 May 2021 12:11:23 Share Post by Email
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Hi friendly fellow SAAB enthusiasts,

My '01 9-3 Viggen is loosing power at higher speeds / revs... It pulls hard at lower revs / lower speeds, and has popped vacuum lines twice already with strong boost, to the very end of yellow. 2nd gear seems to hold higher boost until 4,500 revs or so then fades a little (though need to stay focused on the road in 2nd gear!). Easier to notice in 3rd gear, where again, at low revs, it goes to the end of yellow though by the time I'm at 75-80 in 3rd, boost is down to middle of yellow and the car feels out of breath - my 9-5 Aero would eat it for lunch (!). Lower power more apparent in warmer weather, for sure.

Ideas on what this might be? Platinum plugs as of ~20k miles ago, along with DI cassette. 93 octane always. Religiously maintained / obsessed over, 87k miles. No codes, all well otherwise.

LOVE this car. Thanks for your advice! Happy weekend, all,

Rick

'01 9-3 Viggen
'04 9-5 Aero


posted by 24.63.8...

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