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AMEDEE
AMEDEE, CHEVY TECHNICIAN
Category: Chevy
Satisfied Customers: 24424
Experience:  ASE certified tech ADVANCED LEVEL SPECIALIST. Wisconsin certified emissions state inspector
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Cylinder 3 misfire detected 99 cavalier z24

Resolved Question:

cylinder 3 misfire detected 99 cavalier z24
Submitted: 5 years ago.
Category: Chevy
Expert:  AMEDEE replied 5 years ago.
Hello!

When does the engine misfire on number 3 cylinder?

At idle under a load or all of the time?
Customer: replied 5 years ago.

well the check light just came on the other night , when i scanned it and it came up

when it was at a idle

Expert:  AMEDEE replied 5 years ago.
If all of the ignition components have been replaced, then yes.. I would agree it is a bad fuel injector. You could switch number 3 fuel injector with a different fuel injector from another cylinder to see if the misfire moves. In addition, just be sure to check injector pulse on number 3 cylinder with a noid light as well and engine compression on number 3 cylinder too.
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