84 stalling when warm (Page 1/1) OntarioLakeside OCT 19, 08:10 PM Hey all We are so close we can taste it! 1984 2M4 Stock Iron duke The car starts and idles when cold but will stall when warm. We are able to take it around the block but when you push in the clutch and goto stop it dies. It will start back up again but requires a lit of throttle to idle. Any help would be appreciated. new parts throttle position sensor cleaned the throttle body new plugs and wires new battery new idle control valve Throttle Body Gasket Throttle Body Filter Kit Fuel Pump and filter Fuel tank Air filter ERG valve Gall757 OCT 22, 10:23 AM https://www.fiero.nl/forum/...090907-2-090637.html Steel OCT 22, 12:40 PM O2 Sensor if I had to guess buddycraigg OCT 23, 11:16 PM quote Originally posted by OntarioLakeside: new parts throttle position sensor cleaned the throttle body new plugs and wires new battery new idle control valve Throttle Body Gasket Throttle Body Filter Kit Fuel Pump and filter Fuel tank Air filter ERG valve Did you replace all of these parts before or after the problem? OntarioLakeside OCT 25, 05:31 PM It was the O2 sensor. Thanks for all the help. Its running and idling now.