Having problems with your 2002 Nissan Sentra ?

What is the wire that plugs into the back of the coil pack? The computer said Cylinder 3 misfire. Have checked the spark plug, spark plug boot, and the coil pack.

Posted / edited by AnonymousUser on : 10-12-2018

Answers :

You leave all coil pack connectors on their respective cylinders.
\015\012Usually the crank position sensor tells, the computer where the pistons are,by where the flywheel is,as it passes the sensor.
\015\012You leave all injector connectors in their number sequence.
\015\012Every vehicle uses different ways of pulsing the injectors. Not familiar with yours
\015\012Most likely NO,to the coils and injectors being tied together.
\015\012You can not spray fuel and try to ignite it, at the same time,it has to get into the cylinder and be compressed, one cycle before the spark.
\015\012You could switch injectors,and a relative did that, earlier this year, based on your theory. Sound thinking,a lot of work and not your problem.
\015\012Might add, that while your plugs may needed to be replaced,they had no effect either. Personally, never had a plug failure in 45 years,could happen I guess.
\015\012So you buy one new coil,start on one side of engine,and walk that coil from one cylinder to the next,every time you get a 300 misfire code. Put the OE back and move the new one. Consider you may have others on their way to going bad.
\015\012Make sure you have no vacuum leaks anywhere.
Repair Help & Product Troubleshooting for 2002 Nissan Sentra

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