dmdodd
Active member
Hey Mark,
I had uber "hot feet" too for a while, then my mechanic tested the vacuum line (it's white, now yellowish that runs from the bulkhead over the heater box and down to the water shut-off valve) and found that it had no suction when the engine's running.
He then took out the glove box, and checked the vacuum control switch (that sits behind the dash on the passenger side), which also worked. Then he checked the temperature selector rod (that's underneath the temp selector on the centre console) and found the cable (that goes from the selector to the vacuum switch) was loose. He made sure that as "cold" was selected, the cable pulled and compressed the lever on vacuum switch.
With that all working, he checked and still no suction from the white/yellowish tube.
Finally, he found that the white/yellowish line had cracked inside the rubber bulkhead bushing, and fixed it.
So there's a heck of a lot of items that need checking to ensure that vacuum is being received at the water shut-off valve. But the above is certainly a step or two in the right direction.
First - check you're getting vacuum on that white/yellowish tube.
Cheers
~Dan
p.s. the attachment below is useful for following the plethora of vac tubes for the heater control.
I had uber "hot feet" too for a while, then my mechanic tested the vacuum line (it's white, now yellowish that runs from the bulkhead over the heater box and down to the water shut-off valve) and found that it had no suction when the engine's running.
He then took out the glove box, and checked the vacuum control switch (that sits behind the dash on the passenger side), which also worked. Then he checked the temperature selector rod (that's underneath the temp selector on the centre console) and found the cable (that goes from the selector to the vacuum switch) was loose. He made sure that as "cold" was selected, the cable pulled and compressed the lever on vacuum switch.
With that all working, he checked and still no suction from the white/yellowish tube.
Finally, he found that the white/yellowish line had cracked inside the rubber bulkhead bushing, and fixed it.
So there's a heck of a lot of items that need checking to ensure that vacuum is being received at the water shut-off valve. But the above is certainly a step or two in the right direction.
First - check you're getting vacuum on that white/yellowish tube.
Cheers
~Dan
p.s. the attachment below is useful for following the plethora of vac tubes for the heater control.
