Throttle body Failure on morning commute - Saab 9-5 Bulletin Board - Saabnet.com
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Throttle body Failure on morning commute
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Posted by MI-Roger [Email] (#882) [Profile/Gallery] (more from MI-Roger) on Fri, 12 Apr 2019 08:27:23 Share Post by Email
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I had the vacuum line break about 18 months ago and as part of that event the Techs at K&N also had to reset my throttle body. This morning I had a throttle body issue again, so I turned around and drove 45 miles in the other direction to K&N for assistance. Turned out the Throttle Body needed another re-set. Then I asked them to order a replacement TB for their earliest install time, which is Monday am.

I pulled into a Rest Area immediately after the event occurred and checked the large air tube going into the TB, the hard plastic vacuum line, and all of the rubber lines for any open points or fractures since the car acted as if it had either a vacuum leak or a loose air inlet tube. K&N found the small plastic check-valve in the PCV system was broken in addition to the TB issue. So what is the chicken and what is the egg? Will a sudden loss of engine vacuum cause the TB to need to be re-set? Or is a small vacuum leak somewhat hidden until a bigger issue reveals it?

I had to drive my automatic transmission Aero in manual transmission mode through Ann Arbor's morning rush hour traffic to get to K&N's shop. Right foot busy keeping revs at 1200 or above, left foot doing all the brake manipulation, right hand moving shifter between D and N. Driving my Viggen keeps me prepped for such antics.

TG knows this routine well, while negotiating a semi-disabled car through the same I-94 & US-23 interchange too!

->Posting last edited on Fri, 12 Apr 2019 08:47:03.

_______________________________________ Saabs owned: 2008 9-5 Aero Sedan, sold at 227K miles 2006 9-3SC 2.0T - Wife's daily driver 2000 Viggen Convertible - Summer Fun Car 1964 Quantum IV Formula Car - Retirement project 2000 9-5lpt Sedan, sold at 318K miles


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