1983 Ford Ranger

Thanks to those of you who pointed me to heater core for my defrost problem. That worked. There was no evidence except that everything else was ruled out, leaving nothing else. No evidence of a leak in any of the lines internal or external, either, when replaced.

Now I am looking to resolve a problem with my choke, stalling, racing and/or dieseling. I am told I need a hot air motor in air cleaner, no longer supplied by Ford. Does anyone have any pointers, or the part?

Thanks in advance.

Anne