I just changed my plugs and wires today. The Service Engine Soon light is off. I am not a mechanic and honestly, I don't think you have to be one. It is not complicated, but it is difficult. I did go ahead and change my ignition rotor and distributor cap. I am glad I gave this a shot, but I probably wouldn't try it again. It is now vibrating quite a bit and I need to figure this one out. I hope this helps you...
It means that more than one cylinder has a misfire history. PO301 would be cylinder number 1 misfire. PO302 would be number 3 cylinder misfire.
If you have a "check engine" light on, start with having the codes read. A misfire code can tell you which cylinder or cylinders are having problems. A misfire could be the cause of your engine vibration.
A Grand Caravan would have a six cylinder.
Bad plugs, wire , or coil pack.
sounds like a cylinder misfire..check spark plugs and wires..usually a code will show which cylinder it is, should replace all though
I talked to mechanic and he fixed 5th cylinder misfire on Dodge engine by changing chank shaft postition sensor. It came out on code reader though.
Most likely a bad coil (each cylinder has one) located at the top of each spark plug
Most likely a bad ignition oil. Each cylinder has its own coil mounted at the top of the spark plug
Usually a bad coil , or plug. if the injector was bad , the computer would have coded for it. But the cylinder 3 coil and plug arent that easy to get to. Its the one at the fire wall
P0303 is cylinder #3 misfire. P0300 would be random misfire. Either way you need to diagnose the case of a misfire. Check spark plugs, plug wires(if equipped), cylinder compression, fuel inectors, and wiring.
it would be nice to know which engine we are talking about but generally no would be the answer ----most are not adjustable and those that are would most likely be destroyed by the rotating component
It could just be a bad spark plug wire or the spark plugs need changing.
usually a misfire is either the spark plug or coil pack for that cyl. first I would change plug then change coil pack Take to dealer is still under waranty? Try replacing spark plugs.
If your plugs, wires, cap, rotor and a compression test check out okay I would suspect the #3 fuel injector.
Trouble code P0300 means: Multiple Cylinder Misfire Trouble code P0302 means: Cylinder 2 Misfire Detected Trouble code P0303 means: Cylinder 3 Misfire Detected I would change plugs and wires
Spark plug, plug wire, distributor cap, injector, internal engine ........as in a blown head gasket.
That would be that there isn't enough gas getting to them
Bad plug? Bad wire? Bad piston or valve (do a compression test)
A cylinder misfire by itself shouldn't cause to much damage, but if you drive it while it's misfiring, it will cause a strain on the rst of the engine because you are going to be pulling the same weight with only 5 cylinders. The car will work harder, get hotter, etc. My suggestion is definitely to figure out the problem before driving the car anywhere long distance. A couple short trips is probably not going to cause undue damage, but if you have a way to drive a different car until you get the misfire fixed, I would hold off on even the couple short trips.
Bad plug Bad coil Bad plug wire Bad valve Blown piston
Worn, faulty or dirty spark plug; cracked or worn spark plug wiring or loose connection.
If the check engine light is flashing at 1 second intervals , an engine cylinder misfire has been detected
I would make sure power is getting to the fuel injector use a noid light to test it. You may also want to check the fuel pressure also the intake manifold may have a leak that can cause a misfire as well. Glad your compression is good. That is a sure sign its something simple.
It means the computer is detecting a misfire on those cylinders, the most common cause is worn spark plugs or spark plug wires. I would recomend replaces both then clear the computer codes and see if the service engine light comes back on.