So yesterday morning I get in my truck to go to work. Start's up fine, I throw it in reverse and start backing out. Then when I put the clutch in, it revs to 3500 rpm and stays there. Now it won't idle lower than that.
I checked the choke heater and sprayed some carb cleaner while moving the fast idle cam to make sure it didn't somehow get stuck. I tried looking up other threads to see if people have had this issue and what to do about it. Datzenmike mentioned checking the voltage and when the truck is off I get a 12v reading on the choke heater, but when the truck is on I get nothin. I'm not great with electric shit so maybe I'm not doin that part right.
When the engine gets to temp (which is pretty freakin fast sitting there idling at 3500) the choke is open. And when I turn it off, it diesels like a mofo for a few seconds. So, if anyone has any suggestions or knows what I can do to fix this, I would really appreciate it. It's a '76.
Thanks, guys.