Toyota Repair: 1991 Camry DX 2.0 liter, egr valve, vacuum leak

Question
Ted, we have a 1991 Camry DX 3sfe, 249,000 miles, automatic, that had no compression on the #3 cylinder. I took the cylinder head off and found a chunk missing from an exhaust valve. I had the cylinder head machined with a new valve and all valves were reground, along with new seals, new timing belt, water pump and idler bearings. I triple checked cam timing marks with the crank mark and the rotor saying #1 will fire, and all looked good. I just started the car yesterday after 3 cold months apart, and for the most part it runs okay, except the idle is very slow and it wants to stall. I sprayed carb cleaner around the intake gasket thinking a vacuum leak and nothing changed. If I unplug only the vacuum line to the throttle opener from the intake, it runs much better. Plug it back in and it's idle is very slow again. The dealer said it might have to relearn the idle and that I should just drive it first. I did not know if these years you had to do that procedure? I did all the work myself and I can't think of anywhere that I messed up to cause a vacuum leak or otherwise (not saying there could be). I left the intake mainfold on the car with the throttle body and all vacuum lines attached because I had no problems with that before, just a bad valve. The car has no plates on it so I'm limited to running it in my driveway until next week. Do you have any advice?  Thankyou very much.......Steve

Answer
The dealer is wrong, a 1991 camry or any other model toyota of that year does not have the ability to relearn driving patterns. A couple of possibilities: the EGR valve is sticking partially open, the idle speed control valve is not connected or may be sticking. You can test the egr valve operation by applying vacuum directly to it with the engine idling, it should stall the engine if it's working, if it stays the same the valve is not working or the passage is clogged.