The whirring noise was the ABS pump giving its best before expiring. If you are lucky, it's a Bendix and rebuilts are available and reasonably priced. If you share bad lick with me, your pump is a Bosch. The best price I found on a Bosch pump was $1100. Regardless, try this Mopar dealer in Columbia, SC for quick service and the best dealer prices I've ever found. www.galeanasc.com Chrysler extended the warranty on Bendix ABS systems to 100,000 miles on the 90-93 Imperials but I doubt if it's still effective after all these years. Phil Brust Jefferson, GA 82 Imperial