I like your explanation better than any of the others because it's a cheap fix. -- Sent from myMail app for Android Monday, 10 November 2014, 11:48AM -0500 from Randy Bennell <rbenn...@bennell.ca>: Is there a check valve in the main hose leading to the brake booster? I had a vehicle way back that would periodically lose the power brake function and scare me half to death. I changed the hose between the booster and the intake (it was a gas engine) and that solved the problem. There was a check valve in the hose that would sometimes stick. RB On 09/11/2014 9:23 PM, Andrew Strasfogel via Mercedes wrote: > Some of you will recall my write up of the intermittent loss of power > braking on my 1983 300TD, coupled with the loss of engine shut off (won't > turn off with key). I fiddled with a rubber connector to the brake booster > line, and happily the problem disappeared for nearly a week. > > The issue then resurfaced, but now the following symptoms occur all the > time: > > 1) Power brakes completely gone - must apply extremely forceful pressure on > the brake pedal (or petal, if you prefer). > > 2) Cannot shut off the engine with key - must be done manually > > 3) Vacuum door locks completely inoperative, even with the engine running. > > Otherwise, everything else on the car works fine. > > Whoever is the first to successfully diagnose this problem, based solely on > the symptoms enunciated above, wins a coveted "ATTABOY". > > Good luck. > > Andrew > 1983 300TD No brakes, locks or engine shutoff > 1985 300TD CA version > _______________________________________ > http://www.okiebenz.com > > _______________________________________ http://www.okiebenz.com
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