rpm behavior

["dmcmike2002" <billsfanmd@xxxx>]

I may have a difficult time explaining this but i'll try. I have 
solved 95 percent of my idle issues but this one last little thing 
bugs me. I am reluctant to do anything drastic cause my car starts 
fine, has pep and idles pretty smooth. My question is when I take it 
out of gear (5 speed). On most makes of cars the RPM drops to the 
correct idle and settles where it should. On my car the idle drops 
below the correct idle (about 600rpm) and then "catches itself and 
goes up to about 7500 and idles pretty smooth. Before I solved my 
idle problem it would stall alot doing this. After correcting some 
improper hoses it runs much better.

I was wondering about the throttle valves and the little deceleration 
valve that is supposed to relieve vacuum pressure for the few seconds 
when you take car out of gear and the idle motor kicks in. There is 
one full page in the DMC manual on this function. I had suspected 
this as a possible cause and a fellow owner mentioned it too. Hope 
this makes sense. I dont hear any mention of this as ever causing any 
problems so this may be off base. 

Just wanted to see if I could solve my last little idle glitch.

Mike C
2109