Power or lack of in 2nd gear only... 97 aero - Saab 9000 Bulletin Board - Saabnet.com
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Power or lack of in 2nd gear only... 97 aero
Posted by Bob (more from Bob) on Thu, 2 Nov 2000 08:26:35
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When accelerating from a stop 1st gear is smooth, 2nd has some hesitation around 2100 rmps and 3rd up is great... there is no noticable boost difference in 2nd. I've also picked up a vibration when taking the car from idle to 1500 rpms while in nutral, the rpms increase real smoothly, no surging, but there is a noticable "shake" until you get to 1500. No head noise whatsoever and the engine is real smooth sounding otherwise. I think the two problems are related. I have access to a 97 CS low preasure. So I could swap in everything but ecu and bpc vavle. Should I try just disconnect the battery and doing some adaptive run ins as posted a couple of days ago? I just got the car a month ago and it only started doing this after a major exhaust leak (rear muffler fell off for 2 weeks, talk about throaty sound) was fixed. Could difference in back preasure effect the engine performance? Thanks for all the help.
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