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#1
06-12-2007, 11:29 PM
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Tranny and Brakes, why do they hate me?
Hey Folks,
I have a 1983 300D. After replacing the Shut Off Valve, I started having 2 new problems with my car. Both these problems started at the same time, right after I replaced the shut off. 1. Now, my Brake Pedal is to the floor, and I can't even remember the last time they actually "braked" me. Fluid is fine. Haven't found any vac leaks. and 2. As I step on the gas, the tranny takes forever to engage. I have to play around with the gas pedal until it shifts gears, as I try to keep it from winding out. Can ya help? 
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#2
06-13-2007, 04:05 AM
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Sounds like a vac leak somewhere. Sorry for the lack of specifics, did anything get "dislodged" in the process?
__________________
83 SD 84 CD
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#3
06-13-2007, 06:34 AM
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yep
Tom W
__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.  [SIGPIC]..I also have a 427 Cobra replica with an aluminum chassis.
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#4
06-13-2007, 01:21 PM
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Okee dokee. Back to the drawing board to check for leaks.
I am new, so maybe I missed something. Which hoses would primarily be effected for this to happen? Any ideas where I should concentrate? Because, I was pretty careful when I changed the shut off. Thanks guys.
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#5
06-13-2007, 02:19 PM
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Uhhhhhhhh, it may be something obvious that you missed. Everything that is in the vacuum system but not the brake booster is behind a restrictor, which means your main vacuum line is either cracked and leaking or leaking in some other way.
It could also be a bad vacuum pump, but because this problem appeared right after that replacement, I don't think so. Plug the brake booster end of the main line and try to find any obvious leaks. Then try to use a mityvac on one of the ports (clog the other one) and see if it's holding vac with the car running.
__________________
1984 300DT turbo 138k mi Still hauling me to school and back. Handy Site: http://www.dieselgiant.com/
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#6
06-13-2007, 08:45 PM
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Ok, checked out the tranny vac valve levers, and sure enough, they were worn so bad, one was completely gone!
I ordered the new set already. If it is just coincidence that brakes and tranny are having problems at the same time, that means I have to concentrate on the brakes now. So, starting from the brake booster...
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#7
06-13-2007, 08:53 PM
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Maybe you leaned on the brake vacuum line enough, when you were working on the shutoff valve, to crack the check valve to the brake booster and it is leaking.
__________________
 Gone to the dark side - Jeff
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