side_wayz7

iTrader: (2)

I cant find out what the hell this thing is or were it goes to

please help! lol

FelixIsGod29X

iTrader: (50)

It is JUNK. Block it off.

side_wayz7

iTrader: (2)

lol that doesnt help!

what does it go to??

side_wayz7

iTrader: (2)

can anybody tell me??

3vil

iTrader: (4)

looks like the sub-zero assist. do you have a bottle on the passenger side of the firewall, that would be where the fluid goes.

RotaryRocket88

iTrader: (7)

Sub-zero assist valve.

There are a couple TSBs stating that it doesn't work, and should be removed.

Service Bulletin Number: C5-018/88
Bulletin Sequence Number: 081
Date of Bulletin: 8810
NHTSA Item Number: SB004773
Make: MAZDA
Model: RX7
Year: 1988
Component: ELECTRICAL SYSTEM:IGNITION:OTHER PART
Summary: HARD START WITH COLD ENGINE CORRECTIVE ACTION IF COMPLAINS
OF HARD STARTING IN COLD
WEATHER: RESTARTING AFTER
SHORT DISTANCE DRIVING AND AFTER MOVING FROM GARAGE, STOPPING ENGINE
THEN RESTARTING-CHANGE
SPARK PLUG TO NEW AIR GAP
TYPE-DISCONNECT SUB ZERO STARING ASSIST DEVICE (IF EQUIPPED)-ALL 1986
TO 1988 MAZDA RX7 MODELS TLH


TSB: # F00590 JUN 90 Sub Zero Starting Assist Device - Discontinued

3vil

iTrader: (4)

that hard line coming off should be capped shouldn't it, otherwise it's a vacuum leak?

RotaryRocket88

iTrader: (7)

With the vacuum source hooked up on the right-hand side, you could get a vacuum leak from the coolant hard line. The valve would have to be activated though.