Okay. The wife said the car was cutting out when she was driving today. I drove it and sure enough it felt like it had a miss in it. Ran the codes and got one for 0604 cylinder 5 misfire and one for 0308 which says Closed Loop LH Bank. I am assuming these codes are related. I just changed the spark plugs for the first time since I have had it about 3000 miles ago (130,000). I think Nissan dealership changed them at 40,000 when I got it. I never had any problems relating to misfires before. I put in Autolite Platinums, I know I should have went with NGK but did not splurge at that time. Wondering where to go from here...if spark plugs could have caused it or if they could not have and if it will hurt her to drive it misfiring until I get a chance to fix it. Also what is entailed in fixing a cylinder 5 misfire? Thanks for any help. Matt

 

Change the plugs. You can get ngk coppers for under $2 each.

 

I had a misfire last month.

These are the things that could be causing the misfire:

1) Spark plug
2) Coil pack
3) Fuel injector

To do a real quick test I would switch the coil pack and spark plug from one cylinder to another. Reset ECU. Drive the car till you get the CEL again. Check the codes. If the code has moved to the cylinder you swapped with then you most likely have a bad coil pack.

If the misfire stays in the same cylinder then you've got a pretty big problem as I did. You'll have to change out the fuel injector.

Before you dive in and fix the fuel injector you might want to check your coil pack with an ohm meter (can be bought for $20 or less at your local auto parts store)

Search in the maintenance stickies. It'll show you how to check the coil packs and fuel injector without removing the injectors.

Hopefully it's just a bad coilpack because I believe cylinders 1,3,5 all are underneath the intake manifold. Which is a pain in the butt to remove.

Good luck

 

eta_vu seems to have it all listed there. You might consider pulling the plug and double-checking the gap on it.

 

Okay. Thank! Looks like I will be changing the spark plugs to NGK on Friday when I am off. Will it hurt the car to drive it until Friday? And does anyone know which plug is to the #5 cylinder? Thanks again.

 

Cylinder #5 is on the left bank, top right from looking from the front of the car - closest to the brake master cylinder.

 

Okay. Thanks

 

Make sure you plugged the coil connector plug in completely. A few days after I changed my plugs, the performance took a dump. Code said Cylinder 5 Misfire. I started troubleshooting by making sure the coil was plugged in properly. It wasn't.