85 GN Wastegate Solenoid Valve

Big Dawg

Member
Joined
Aug 2, 2020
Hi guys,

I am just in the middle of connecting all my vaccum lines on my 85 Hot Air and a couple of lines just don't make sense, seems they have been routed incorrect, or i just can't seem to make out the diagrams i found.


First there are 2 hoses that are coming out of the Solenoid Wastegate Valve, I know one goes to the actuator yellow in the diagram attached, but there is one beside it as well and it doesn't show clearly where that one ends up going, it was T' d off into the PCV vaccum line, but in the diagram it shows no T's in the PCV vaccum line.. I was thinking it actually goes to the vaccum distribution box on throttle body, but not sure.







The second vaccum line that has me a bit confused is there is a thin black hose that comes over from the passenger fender and goes to what I'm thinking is the cruise control. This line had a T adaptor and one end was attached to the vaccum box on throttle body, but when I look at the diagram it only shows the pcv vaccum line and a line out of the EGR valve control plugged into the vaccum box.









I am hoping someone can guide me in the right direction.

Thanks alot,

A.
 
Just confirming:
Looking at your drawing of the Solenoid Wastegate Valve,
Hose on the left "T"'s into the PVC
Hose on the right "Y"'s into the Wastegate Actuator and Turbo
 
You state:
"The second vacuum line that has me a bit confused is there is a thin black hose that comes over from the passenger fender and goes to what I'm thinking is the cruise control."

This is correct, it "T"'s into the Vacuum Block

. Vacuum Block to Cruise.jpg
 
Just confirming:
Looking at your drawing of the Solenoid Wastegate Valve,
Hose on the left "T"'s into the PVC
Hose on the right "Y"'s into the Wastegate Actuator and Turbo
Hey HotAirWH1 - When the hose on the right is not connected (to "Y" @ wastegate actuator), and the wastegate is directly connected to the compressor housing, is the waste gate to compressor housing connection now considered "tuner style"?
 
Hey HotAirWH1 - When the hose on the right is not connected (to "Y" @ wastegate actuator), and the wastegate is directly connected to the compressor housing, is the waste gate to compressor housing connection now considered "tuner style"?
Yes this is my understanding.
 
I'm using an unmolested OEM Boost Line Vacuum "Y". You may be able to find used OEM ones for sale on line. If you find one be aware as some have the metal orifice removed. Kriban's may be a suitable replacement.
 
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