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+--- Thread: IP vac valve (/showthread.php?tid=2827)
IP vac valve - SicNick - 07-29-2011
I have the vacuum line from my trans modulator hooked up straight to the vaccum pump on my OM601. Is this incorrect? Should it somehow route through the IP? I've heard mention of an IP vacuum valve?
RE: IP vac valve - willbhere4u - 07-29-2011
(07-29-2011, 03:22 PM)SicNick I have the vacuum line from my trans modulator hooked up straight to the vaccum pump on my OM601. Is this incorrect? Should it somehow route through the IP? I've heard mention of an IP vacuum valve?
On my old 80 300sd there was a throttle valve that hooked up to the linkage it varied the amount of vacuum like a gas car would full at idle for soft shifts and none at wide open throttle for firm hard shifts!
Remember these transmission where designed for gas engines with vacuum at idle and none at WOT! It should varied with the throttle body/throttle linkage!
Here is a pic its bolted right on top of the IP at least on the older models
RE: IP vac valve - winmutt - 08-01-2011
There is a vacuum control valve, you also need a few orifices. You should really not drive the car in its current condition as you are going to cause damage to the modulator.