Re: 2007 9-5 brakes stiff when cold - Saab 9-5 Bulletin Board - Saabnet.com
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From my narrow field of view, the vacuum lines including one way valve on the automatics leading to the brake booster can fail suddenly. It happened to me and our 2006 basically had total brake failure at thankfully low speed (some fault may have rested with the cold "too dangerous to install" on a Saab ceramic pads). This problem with the lines is a recall that will never happen due to lack of frequency although there was one many years ago on the 9-3, I believe. My recommendation is that your aero-plane be grounded until replacement parts can be installed. Ensure your e-brake is functioning beautifully and avoid the use of ceramic pads that need too much heat to grab properly (don't use them in cold climates). Only use OE vacuum line parts in that brake booster loop (they are made in Germany but get brittle with age). Replace them every 10 years and do regular inspections. Ensure all pilots receive training for brake failure including awareness and countermeasures (letting off throttle, pumping brakes, downshifting, applying e-brake, engage 4 way flashers, using shoulder or guardrail to slow vehicle etc). I believe I touched the vacuum valve when I was looking for an oil leak or replacing the flexible vacuum lines near the TB. One in questionlater broke right at the valve (on the wrong side unfortunately) Life is short so live dangerously. Enjoy. Dave The Ice Age Knave with 3 lives left.
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