Questions & Answers for: alero misfire code

...alero and it has the check engine light on. it is stuttering and i took it to auto advance and they did a diagnostic and said probably the spark plugs. that does make any sense or could it be ...

...misfire code My 2003 alero 4cyl. 2.2l throwing a #1 misfire code. I've read about other such problems and people have changed there plugs and the houseing unit and still didn't change the problem. ...

what would cause a p0300 code what do i need to do to fix 2003 alero misfires, chgd plugs and fuel regulator, codes are p0171 and p0300. Any ideas

alero with a 3400 what does code P0300 mean and what does it cause the car to do P0300....Random/Multiple Cylinder Misfire Detected ask local mechanic to have a look for you ,could just be a cold damp

...the 2003 Alero? Been there done that code. Ended up being the sparkplugs. Do not use Bosch, the contacts actally arched together on mine 2 different times. Use a different brand or even AC Delco

alero is sputtering i replaced the plugs and wires its still sputtering i get a po300 code CODE PO300 MULTIPLE ENGINE MISFIRE DETECTED CONDITIONS. POSSIBLE CAUSES.WEAK FUEL PUMP.STOPPED UP FUEL FILTER

2.2L------ on te code P0171 = Oxygen Sensor... P0300 = The PCM is detecting a crankshaft rotation speed variation indicating a misfire sufficient to cause emission levels to exceed mandated standards.

...alero put on computer and these are the codes that came up I already replaced the plugs and boots, it is still misfiring, here are the codes what do they all mean?? B1227, B1245, B1275, P0300, P0172 ...

...alero 2.4 is misfireing when I accelarate & the headlights flicker. Have replaced spark plugs & boots but did not help. Have any idea what it could be? Does not send any code & check ...

...Alero 4 cyl. CEL flashing, cuts off while stopped or when slow down to turn corners. Recently started backfiring. Drives fine @40 mph. Went to auto zone and got #3 misfire code. start with changing ...