Just wondering if this is the OPEN position of the water valve - for radiator fluid change.
water valve position
- Thread starter nikey22
- Start date
Yes
For LHD model, yes.
For RHD one, the valve is mounted in opposite direction so it will move towards the fire wall when it is in fully open position.
In fact, if you look closely at the metal lever on the water valve operated by the control cable, you will see engraved arrow showing the direction with the text ‘SHUT’.
In your photo, you can actually see the arrow pointing towards the fire wall indicating the closed position.
By the way, probably you are aware of this but the coolant hose cramp/band close to the left side edge of your photo has been moved from its original position....
Kaz
For RHD one, the valve is mounted in opposite direction so it will move towards the fire wall when it is in fully open position.
In fact, if you look closely at the metal lever on the water valve operated by the control cable, you will see engraved arrow showing the direction with the text ‘SHUT’.
In your photo, you can actually see the arrow pointing towards the fire wall indicating the closed position.
By the way, probably you are aware of this but the coolant hose cramp/band close to the left side edge of your photo has been moved from its original position....
Kaz
Agreed, and it is actually not sealing properly in that position, since the clamp is behind the edge of the pipe. Good catch Kaz!!
I'll add a little something to this. A number of years ago, my AC was performing poorly in very hot weather. Joe Lamoriello told me to check that the cable was properly adjusted so that the water valve was turning fully off. If that valve doesn't fully close, the heater is fighting the AC. A few second adjustment and a miracle occurred - good AC performance!
Thanks for that tip, Joe.
Thanks for that tip, Joe.
This seems to be a problem that I am having, the A/C works great when I start the car and then after driving for awhile it seems to have problems keeping up. Angus had mentioned this a few years back that he had the same sort of trouble with the valve and now hearing this again, I will be looking into this in the spring. I don't need it right now as it is -36 degrees Celsius (-32.8 F) with the wind chill right now and I'm sure it could keep up right now, but it is parked for the snowy months. Thanks for the reminder ftuhy!!
What do I need to look for to make this adjustment properly?
91 NSX Red/Black
09 VW Jetta TDI White
Ditto. I had my evap change a 1.5 years ago and it never really cooled like originally. I even use R12. Turned out to be the cable adjustment as well. I drove a year like that.
If you look at the pic, the water valve is fully open. The cable should be all the way retracted towards the clip for the valve to be shut. You can open the cable clamp by popping it upward and reposition the cable sheath to be sure the valve is all the way closed.
HTH,
LarryB
The factory manual hides this adjustment quite well, and it took a while for me to find it again. Aah, the problems of having a write-only memory!
Anyway, per page 22-75, step 15 of the factory manual (which includes a good diagram) with my comments added because we're doing an adjustment, not a heater core installation:
1. Turn the ignition key on, set the CCU dial to the lowest possible temp and the AC on. Turn the ignition off again.
2. Verify the cable is connected to the heater valve arm
3. Unclip the clamp on the heater valve cable sheath. Using just your fingers, gently "help" the heater control valve to the full off position (the movement should be very slight). Slide the cable housing/sheath back to take up slack in the cable. Then, snap the clamp down over the cable sheath/housing.
The diagram in the manual plus the picture in item 1 of this thread will make it obvious.
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Thanks to both Larry B. and ftuhy. I just have to wait about 3 months to put this into practice, but this is where you really get to appreciate the members of Prime and all the help that is given to other members. My hat is off to the both of you!! Thank you! I did find it in the manual, but as my NSX is a '91, the information is on page 22 - 67.
91 NSX Red/Black
09 VW Jetta TDI White
91 NSX Red/Black
09 VW Jetta TDI White
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