Check for a broken vac line to the ACC first -- up by the brake booster, gray with red stripe? I'm not sure on the W126 chassis. No vac supply will produce defrost only. Typical failure is a split check valve.
Get a MitiVac hand pump, absolutely invaluable for diagnosing vac problems. Door checks aren't bad, either for cost or replacement. Pull the door panel (directions if needed, it does NOT pry off, it has hooks and must be lifted straight up after removing the screw at the top of the armrest, the trim, and the inside door latch, along with the cover at the latch itself. Two screws on the front edge and one on the inner side, pull the pin, door stop comes right out to the rear. Usually an e-washer clip on the retainer pin. Peter _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
