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#1
03-22-2009, 02:07 AM
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1978 M117 Trans Vacuum (W116)
Is there anything between the manifold vacuum source and the transmission modulator? no orifices or control valves?
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RIP: 80 300SD RIP: 79 450SEL 2002 E430 4matic (212,000km) 2002 ML500 'sport'  ____________________________ FACEBOOK: PANZER450 
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#2
03-22-2009, 08:38 AM
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Correct. No check valve or anything.
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Current: 2021 Charger Scat Pack Widebody "Sinabee" 2018 Durango R/T Previous: 1972 280SE 4.5 2014 Jeep Grand Cherokee Limited "Hefe", 1992 Jeep Cherokee Laredo "Jeepy", 2006 Charger R/T "Hemi" 1999 Chrysler 300M - RIP @ 221k
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#3
03-22-2009, 09:16 AM
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But the shift modulator itself is adjustable. There is an allen screw iside the transmission side connection. It regulates shift pressure in response to engine load as measured by the engine vacuum. I believe there is more information on this @ www.w116.org.
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Berfinroy in CT Present vehicles: 1973 300 SEL 4.5 1959 Rolls Royce Silver Cloud I 1959 Ford Thunderbird convertible/430 Past vehicles; 1958 Bentley S 1 1976 ex-Max Hoffman 6.9 1970 300SEL 2.8 1958 Jaguar MK IX 1961 Jaguar MK IX 1963 Jaguar E-type factory special roadster 1948 Plymouth woody 1955 Morgan plus 4 1966 Shelby GT350H Mustang
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#4
03-22-2009, 06:02 PM
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yeah, I know ALL about the vacuum modulator. I have a hard late shift, so if the vacuum line is intact and not leaking, I will turn the pressure down a little at a time till it gets better.
__________________
RIP: 80 300SD RIP: 79 450SEL 2002 E430 4matic (212,000km) 2002 ML500 'sport' ____________________________ FACEBOOK: PANZER450
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#5
03-22-2009, 10:23 PM
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I checked the lines, everything is OK, it's a hard line to the manifold, I was expecting a plastic line. Anyway, I think my modulator may be shot or at least the cap. I noticed that it's the same style as the mod in my SD, different transmission. The modulator in the SD is red and the one in the SEL is white (or light green) does color mean anything? can I sawp them and hope it works?
__________________
RIP: 80 300SD RIP: 79 450SEL 2002 E430 4matic (212,000km) 2002 ML500 'sport' ____________________________ FACEBOOK: PANZER450
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Linear Mode
