If either sensor isn't working correctly, the car will run rough and the engine will be less efficient. If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders i. Look up the other , please use the search box. So you should chech it on our car models. P0302 is a relatively common Mazda Miata trouble code.
If the last digit is a number other than zero, it corresponds to the cylinder number that is misfiring. I would suggest spark plugs, spark plug wires, distributor cap, and rotor if applicable. Raw fuel is also passing through the cylinder into the exhaust. Replacing a set can be very expensive. While not car-threatening, it's good to take care of this right away to improve gas mileage.
You can always reset the trouble codes and swap the coil pack, wire, and plug from Cylinder 2 to another. Often, the best way to troubleshoot a single cylinder misfire is to swap ignition components between the misfiring cylinder and a good cylinder. Driving with a misfire can damage that catalytic converter. That being said, the plugs are a great place to start. Scanner shows P0302, misfire on 2.
If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. After that you would want to test the fuel injection system. This causes the ignition coil to provide a spark and the injector to inject fuel into each cylinder at the right time. Smear a little anti-seize on the threads of the new plugs and insert by hand and tighten in accordance with the instructions on the plugs e. If you've already made it to the store, you might as well just replace it. A faulty crankshaft position sensor will misdiagnose misfires! Otherwise, check the coils a. Thank you for your help! Man read this and u will know what is ur problem and how to fix it P0300 Code - Random Misfire What does that mean? You should also feel the vehicle is down on power as well.
P0302 Trouble Code Diagnosis- Mazda Miata There are quite a few things that can cause the P0302 trouble code to trigger the Mazda Miata. What are the common causes of code P0302? Mazda recommend rotors be replaced every 25000 miles Let me know if this helps Dec 31, 2012 You need to explain who works on your vehicles,when you have these issues We could write a book, and you go down the street, to a repair shop,not having a clue what we said What has been done to diagnose your current issues? In some cases, the catalytic converter has gone bad. Continue driving and see if the check engine light turns off. In some cases, the catalytic converter has gone bad. I've also heard in other cases the problems were faulty fuel injectors.
The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing. Otherwise, check the coils a. A P0302 code means that the the car's computer has detected that one of the engine's cylinders is not firing properly. Though now, the car's engine sounds. I could use some help here.
With what I have read on the forum it may be your coil packs as these have been common to fail. I've also heard in other cases the problems were faulty fuel injectors. I've also heard in other cases the problems were faulty fuel injectors. If your are for a different car, select that vehicle series before searching for the diagnostic codes because not all used by one manufacture are used by the other makes. If the misfire moves with the sparkplug for example then the sparkplug would be the cause of the misfire. I was going to check the voltage coming out of it but my multi meter died. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced.
Random misfires that jump around from one cylinder to another read: P030x codes also will set a P0300 code. The list of automotive Makes at the right edge of the screen. Take a look at the electrodes and see if they are in good shape. What are the symptoms of code P0302?. Pull over, retighten it, and take a look at the cap to see if it has any cracks in it. A P0302 code, for example, would tell you cylinder number two is misfiring. Most Common P0302 Fixes If you follow the items listed above you should be able to fix the P0302.