I finally got my 82CE crossfire to run at 700 rpm.  To do that I have to cap the vacuum hose to the MAP sensor.  Put the hose back on and it runs at 1200 rpm. 

Thanks to all of you that have helped me this appears to be the last of many vacuum leaks.  

Question is do you just replace this or can you sometimes take it apart and repair it. 

I think thats one of those replace parts.  If my memory serves correctly, mine was somewhere around $45.00 at the local parts store.  Mine looked like it was sealed with internals inaccessible.

Little more information on the problem.  I purchased a new MAP sensor and installed it.  Idle shot up to 1200 and stayed there.  Disconnected the vacuum hose to the MAP sensor and plugged it.  Idle down to 700.   So there is more to this than a bad sensor. 

Just when out in the rain (yes it does rain in SO Cal) and checked the vacuum .  I get about 13- 14 inches take from where the MAP sensor gets it’s vacuum.    

Dodged a bullet.  I did not wipe my shoes when I ran in to finish this email and muddy foot prints on my wife carpet.  She is gone I just spent the last half hour cleaning the spots I think I will get away with being stupid this time. 

Back to the problem idle is between 1000 and 1100 rpm in neutral.  Ran the car up and down the street just to see what would happen at the stop sign it once it idled down to 700 rpm.  After that four or five stops it did not get below 1000 rpm. 

All I know about the MAP sensor is what I read so far and that is it compares the local atmospheric pressure against what the engine is doing and send a signal to the computer to control the idle.  

I know the computer takes a few other inputs but I do not know what or how these all come together. 

If I cap the vacuum feed on the injector and that make the MAP sensor read the vacuum being the same as the atmosphere the car will idle down to 700 - 800 rpm