I'm having this Problem Right Now.
The Temperature dropped off this past week. It's been REAL COLD the last 3 days. I live in SC & I'm just not use to it being this cold & neither is my 99 F150. The Temp has been in the Teens & with the Wind Chill Factor it's around 5-10 degrees. If I jump in the truck start it up & take off down the road without warming it up (going home from work 6am). I will make it maybe a mile & the Throttle gets Stuck from FREEZING. Especially with the Cold Air blowing into the Engine Compartment. If I hold the Brake down till I'm going around 40mph for 4 or 5 miles the Engine compartment gets warm & it gets unstuck & I can move on down the road at 60mph. This sounds Crazy but my Throttle is literally Freezing. If I let my truck warm up for 15min (going to work) prior to driving it, it's doesn't stick. I don't have a Clue where or what I should Lube to prevent this, or what kind of Lube to use that wouldn't cause more problems.