A week or so ago in Minnesota, the bus' engine started in the morning but the throttle froze at a high RPM. It had been cold, about 25 degrees. Later in the day, with temperatures in the 40's, the throttle operated normally.
This morning in Denver it was cold but the bus started and the throttle operated normally. Until Monument, 50 miles south. Suddenly the gas pedal went down but would not come back up. I thought initially something had gone wrong with the cruise control but turning it off didn't help.
Fortunately I had pulled off to get fuel and was able to stop the bastard by leaning all over the brake. I put on the emergency brake, threw off the seat belt and gloves, and yanked up on the gas pedal. It came up.
I discovered that I could drive by pushing down a little on the gas pedal and then when I wanted to slow down, hooking my toes underneath the side of it and pulling up. Enough to get to a safe place to park. Not enough to get to New Mexico.
The MileHigh City is as good as its name and is at 5280 feet. Monument is at 6961 feet and is correspondingly colder. Which I am reasonably sure is why the water in the fuel chose this place to freeze and lock up the throttle mechanism.
I bought some gunk which is supposed to remove water from the fuel and will be able to use it when the ice has melted. According to the Weather Channel the next time the temperature in Monument will be above freezing will be noon tomorrow.
In the meantime, deepest darkest Monument for 21 hours.
Then I can add the anti-water-and-crap-in-the-fuel gunk to the fuel tank and drain water from the fuel filter. And try it again.
Meanwhile, plenty of time for a nap.