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View Full Version : Name that mystery hose????

8upZR1
03-03-2009, 05:59 PM
When you look at the firewall of a 1990 ZR1, there is a vacuum hose protruding into the engine compartment from under the dash. It is to the right of the steering shaft and underneath the brake master cylinder. Can anyone name this piece? Thanks in advance!!!
W i l l
03-03-2009, 07:40 PM
I know the throttle cable comes out of the firewall at approximately that location and could be mistaken for a vacuum hose. Without going to look at a car, I don't have a clue as to what the vacuum hose you are referring to does. Hopefully someone else has an answer. Good luck!

Will
-=Jeff=-
03-03-2009, 07:46 PM
When you look at the firewall of a 1990 ZR1, there is a vacuum hose protruding into the engine compartment from under the dash. It is to the right of the steering shaft and underneath the brake master cylinder. Can anyone name this piece? Thanks in advance!!!

Cruise Control Vacuum release.. goes to the brake pedal I believe
GOLDCYLON
03-03-2009, 10:49 PM
Im thinking the CC as well but a picture of what your looking at would be priceless to be able to help you more effectively.
-=Jeff=-
03-03-2009, 11:34 PM
Im thinking the CC as well but a picture of what your looking at would be priceless to be able to help you more effectively.


it is HVAC goes through the Firewall on the Passenger side
8upZR1
03-04-2009, 11:13 AM
Unfortunately my neighbor has my camera at the moment and Ive been too lazy to deal with getting it back. Ill probably do it today so I can post a pic. The hose & grommet come out of the firewall under the brake booster. Cruise Control Vacuum release sounds logical. I dont think its the HVAC hose, it enters through the square-ish bulkhead connector, kinda behind the passenger side cylinder head. I dont think there are any more vacuum hoses that go through the firewall besides these 2. Anyone know of a 3rd or 4th?
-=Jeff=-
03-04-2009, 11:17 AM
Unfortunately my neighbor has my camera at the moment and Ive been too lazy to deal with getting it back. Ill probably do it today so I can post a pic. The hose & grommet come out of the firewall under the brake booster. Cruise Control Vacuum release sounds logical. I dont think its the HVAC hose, it enters through the square-ish bulkhead connector, kinda behind the passenger side cylinder head. I dont think there are any more vacuum hoses that go through the firewall besides these 2. Anyone know of a 3rd or 4th?

you are correct.. only those 2