The old monovalve's diaphragm was broken, so it could have been leaking.

I just installed a new monovalve insert, so I doubt it's leaking. Since my friend touched the two monovalve wires together, they're the same voltage (a little under 12V), so today I put one of them on the monovalve power pin, and I put a ground wire on the other pin, and the heater quit coming on.

However, the A/C isn't running cool. It's running about outside temp, maybe a little cooler. Before the whole heater ordeal, it was blowing very cool.

ACC83-85 is the one I was looking at, but the only place where I could find the monovalve listed was page 308, and it was somewhat helpful, but not very. Do you know what the numbers with an asterisk mean, like 11*?

__________________
Gabriel
'91 350SD 162k
'83 300SD 210k - rear-ended and scrapped
'84 300SD 210k - totalled