Questions & Answers for: Geo Prizm runs rough

...runs great Had exhaust leak fixed rough idling can be caused by dirty air filter.dirty throttle valve and bore.vacuum leak at egr valve and pvc valve.also idling too low.will cause rough

running rough,doing bad on gas mileage..already replaced spark plugs,. spark plug wires.rotor, distributor cap. replaced the fuel filter a thousand miles ago. .. Check your timing with a timing light.

...runs very rough. Can be run for minutes, rough by careful thottle. maybe 400 rpm after start. Very little RPM change, with throttle blip. Almost no throttle response, engine barely idles New ...

...runs rough for a few minutes then is fine and runs great. if it contines to run fine dont mess with however if it starts acting out again sound like possibly loss of fuel pressure have it check next ...

turns over will not start. have alread changed the spark plugs dis. cap and rotor. Could it be th coil? or a fuel system problem? Before it would idle rough at a stop when given gas it would move very

Engine runs rough Washed the engine now the engine runs rough wont stay on . Replaced cap , rotor , & coil still runs rough . unplug ur main wires an make sure there dry

...runs rough in gear. engine idols fine in park and in neutral, but when you come to a stop the engine will not idol in gear, it begins to run very rough and then choke down. Also, it is very rough on ...

what does the map sensor do on 1994 geo prisim my 94 prizm started running rough during the cold spell.Put it on a scope and the only thing that was out of specs was the map sensor new spark wires. ...

...indicate? Smooth idle unless a/c is running or load applied. Then it runs rough almost like timing is out. Hi Martin,here's a link to your code. P0431 Warm Up Catalyst Efficiency Below Threshold Bank ...

1992 geo prizm start but won't run we have changed the fuel filter fuel pump distributor cap and rotary button coil pack battery and alternator plugs and wires the catalytic converter was glowing red ...