when i start the car it acts cold,if i reset the check engine light it runs worse i have changed the fuel filter,o2 sensor and cleaned the map sensor the plugs are good,not sure i think its vacuum or sensor problem,it seems to want to die after you put in gear and has no power could it be the catalytic converter?thanks
runs rough on 1991 Saab 900
by jamesfye in Maryville, TN on November 01, 2010
ANSWER by Superbob on November 01, 2010
I'd say, look for an intake air leak. I suppose it could be the catalytic converter, it could be getting plugged up. If so, you could possibly be able to tell by putting your hand up to the exhaust outlet pipe and feel a steady flow instead of pulsing exhaust gasses.
Have cleaned throttle body,still rough.
it worked perfect for 2 miles the i stoped at the store, then it was back to rough after i stopped the car, i feel like i was suppose to drive more so the car readjust to the clean IAC? anyone exp...
sounds started at first start up this morning. The sounds are intermittent while engine is running in idle warm-up.