Amazingly enough I had the exact same experience yesterday with a company truck, '93 2wd EFI Toyota Pickup, when I went to pick up truck today the mechanic said that there was a clogged vacuum hose. I don't know which one off hand, but if I get the chance I can ask tomorrow. Hopefully you'll get just as lucky.

Just reread you post. I'm don't have any idea about relevence of the heater because it was not on in my truck.

Last edited by Kona; 10/15/03 03:22 AM.
Back in the West!