First you need to retrieve codes from the Engine control module. You can buy a cheap code retriever at harbor freight and get the codes. After you get the codes, if it is P0301 it means cyl #1, P0302 = cyl #2, P0303=cyl 3 and P0304= cyl 4. For ex: if you got P0301 you should remove the ignition coil #1(near the front of the engine, where the pulley is) and change its position with the coil # 2. Also remove the spark plug #1 and change the position with the spark plug #4. Clear the codes and start and run the engine until the check engine light goes on. Check for codes and see if the code change for a different code. If it change the position observe which one is the change. If is P0304 you have a bad spark plug, If it is P0302 you have a bad coil. If it repeat P0301, you have either a low compression, bad injector/connector, bad intake gasket them you should continue your diagnostic. I hope this help you.
Junior.
SOURCE: random engine missfire on cylinders
1 and 4 fire off same coil so i would feel conifedent saying either the wires or the coil is bad we do several coils at the dealership please rate this info
SOURCE: How do you rplace an ignition lock cylinder on a 98 toyota corolla
You can do this one yourself if you want it does not require removing the steering wheel. just the plastic housing from the steering column.
remove housing/cover. then look at housing with cylinder lock assem. on bottom about 1.2 inches or so from the end of the lock assembly you will see a very small hole insert metal pin into hole and push in while turning the key in the ignition backwards to accessory positionyou will feel the pin your pushing move in a bit, then you should be able to pull the cylinder assembly out. insert new assembly with key in the same position and turn forward this will install your new assemlby then reassemble your plastic column covers.
SOURCE: 2001 toyota corolla, theres a hole in cylinder #2
you can have the engine rebuilt but the labor cost to do something like that isn't worth it. you can get a remanufactured engine with a better warranty for cheaper. you will also need to address the reason the piston burnt through, so it does happen on new motor.....remember to vote :)
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