The first thing that comes to mind is that the battery is low and the alternator is trying to charge it. The intermediate key position or disconnecting the battery unload the alt. ? Ken Quoting Teamamc <teamamc@xxxxxxxxxxx>: > Hello all, > I have a 1975 2dr hornet . 258 auto with air tilt and cruise. > I replaced the cracked exhaust manifold yesterday. > After starting the car and checking for leaks I go to turn the car off. > > Now as I turn the key off the engine shuts down. fine. > If I turn the key slowly. just before the key shuts the engine off and I > hold it in that position > the engine increases RPM'S. > if I move the key forward the rpms return to normal. > I could possibly live with this. > At present I have a 1980 Tilt column installed in the car from a concord. > > NEXT problem is with no acessarys on just the engine running. > If I remove the positive battery terminal the engine increases rpms > signifcantly. > (400-500) RPM approx. > If I have the lights on and remove the positive battery post the rpms > increase a little bit. 50 RPM maybe. > When I swapped the exhaust intake I did replace the cruise control Rubber > Bellow as the old one had a leak. > > It was 11.00PM last night when I Finished. > > Any quick clues before I dig in . > Thanks > Bryan > > > > > > >