Hello, hope someone can help with a problem I have with my 84 Turbo wagon. Engine is a B21FT with CIS. The problem is, after the car reaches operating temp, the engine RPM is very slow to return to idle. When cold, there is no problem. This has became noticable since I rewired the left side harness and reconnected the sensors on the left side of the engine as well as reconnecting the wax thermostat.

Thanks for any advice I can get.

Lewis

Check adjustment of idle switch.

Don Foster (near Cape Cod, MA)

Don, thanks for your reply. I have done the test on the TP swt and have set the curb idle per "the Book".(Bentley) I have disabled the CIS motor and it will still "race" on down to idle. The one thing I may have failed to mention is that I replaced the thermostat and the engine is running at what I would think is the proper temp. (needle at 9:00) This, I belive, has been the source of the run on problem. I have tried to figure what curcuit that would be engaged at the higher temp, that may be out of spec. Other wise the engine is strong to 5 grand. One other twist, is that it seems to really "rip" when it has just gotten to the point where the temp has just started to get off bottom. I figure this can be due to addition of the cold start injector still in the loop. (run on starts at about 8:00 on guage)

Thanks, again, Lewis