can bad iac cause a misfire?
474626
The cause is often a problem in the idle air control system. The first thing to check is the intake vacuum with a vacuum gauge. ... An EGR valve that is leaking can also act like a vacuum leak and cause a random misfire.
659693
It is not advisable to be driving any vehicle with a misfiring cylinder as this can cause irreparable damage to the engine of the car. The most common cause of a cylinder misfire is bad spark plugs or the imbalance of air or fuel mixture.
684943
Een if your car does start, bad spark plugs will produce problems long after. Ideally speaking, the sound of your engine should be smooth during idling, and your car shouldn't be rattling. However, bad spark plugs will produce a rough and jittery idle. 3) Your engine will sometimes misfire.
740314
If you have a blocked air intake or a faulty mass airflow sensor, your engine won't get the air that it needs, and it'll often misfire and cause your car to jerk around during acceleration. ... Clogged catalytic converter: Your car's catalytic converter is in place to reduce the emissions that your car produces.
819860
The leading cause of premature failure of an ignition coil is due to a worn or bad spark plug ignition cable. A bad spark plug ignition cable will have a much higher than normal resistance. ... This excessive voltage creates a high amount of heat which consequently melts the coil's wire insulation.
1357089
['Engine has a rough idle. If your Spark Plugs are failing your engine will sound rough and jittery when running at idle. ... ', "Trouble starting. Car won't start and you're late for work… Flat battery? ... ", 'Engine misfiring. ... ', 'Engine surging. ... ', 'High fuel consumption. ... ', 'Lack of acceleration.']
159637
Bad compression is most noticable at idle and when trying to start the car. If it's on just one or a some of the cylinders it shows up with a rough idle or rythmic shake of the engine. It high RPM it is difficult to detect unless it's so bad that the engine misfires. You get very little power loss with low compression.
971651
['P0171 System Too Lean (Bank 1) ... ', 'P0174 System Too Lean (Bank 2) ... ', 'P0300 Random/Multiple Cylinder Misfire Detected. ... ', 'P0301 Cylinder 1 Misfire Detected. ... ', 'P0340 Camshaft Position Sensor Circuit Malfunction. ... ', 'P0401 Exhaust Gas Recirculation Flow Insufficient Detected.']
88369
A faulty engine distributor won't spark, which will either prevent the engine from starting or cause it a running engine to fail. very nice overstanding. In order for the ignition system to work properly it is important to keep the engine distributor operating at maximum efficiency.
1242298
You can get a MAF signal too high code as a result of overboost and a boost leak. You're vacuuming too much air past the MAF since the leak is causing the ECU to increase N75 duty cycle to get the boost where it belongs.
70872
A dead FICM will therefore leave the system with no way to actuate an injector and the engine will not start. A weak or failing FICM will contribute to hard start, rough idle, and/or intermittent rough running conditions.
1256737
['Sluggish Oxygen Sensors.', 'Inaccurate or Defective Coolant Sensor.', 'Defective Engine Thermostat.', 'Engine Misfire.', 'Intake Manifold or EGR Valve Leak.', 'Worn or Fouled Spark Plugs.', 'Dirty Fuel Injectors.', 'Low Compression.']
947770
Even a dirty MAF sensor can cause a lean code and/or misfire to occur. The engine may be stalling because it isn't getting enough throttle opening. The cause is often a problem in the idle air control system. The first thing to check is the intake vacuum with a vacuum gauge.
780794
A DPFE will not cause the car to misfire. It is either a DIS, Coil pack, wires or plugs.
665504
As dieselss mentioned, if oil is low it will not allow coil to spark. If oil level is good, disconnect yellow wire going to low oil sensor mounted near on/off switch. If it starts with wire disconnected, then the sensor is bad. You can run with sensor disconnected but replace ASAP!
1181327
Too much of a buildup can lead to cold start misfires, poor fuel economy, and, eventually, a reduction in engine power. It should be noted that oil catch cans are only really necessary for direct injection engines.
1319458
Low compression will not lead to a Check Engine light unless it is so low that it causes a misfire.