Help with 95 maxima misfire!

[nastys13]

Okay so today when I was on lunch at work, I noticed that my car was running like ****. I could feel the engine bogging out inside the cab of the car and knew something was wrong. When I got out I hit the nearest Autozone so they can scann my ECU (check engine light was on) and it came back as a misfire in cylinder #4. I had an extra set of spark plugs laying around the house so I threw those puppies in real quick hoping to resolve this issue. But when I fired her up it still ran the same. Can somebody help me with this, I'm not sure what the problem might be. I was thinking the coil pack cylider #4, might be bad. Other than that I dont really know what my next move is. Any help with this would be great, thanks.
Modified by nastys13 at 6:21 PM 3/6/2007

[Beancooker]

Click here for coil test instructions.

[nastys13]

I dont have a Maxima manual, which is the #4 cylinder on my V6 looking at it from the front of the car. Left, center or right?

[maxhopper]

#4 is the center plug closest to the radiator.

[nastys13]

Okay I've changed the spark plugs and the coil pack for the #4 cylinder, and still runs like crap! what gives.....the Autozone guy said something about the knock sensor failing as well. Does this make sence?

[coolhand]

By default, it is your injector. feel luck cause I have to replace one on my 95 and it's number one ( under the intake )
Modified by coolhand at 1:11 PM 3/8/2007

[nastys13]

I didnt realize an injector could cause a misfire. I would think that if I had a bad injector, it would come up on the scanner which it didn't.

[coolhand]

The ECU will register a misfire if the cylinder is now work correctly. I am not sure about how but it can. Did you check for spark from the coil pack? Or did you ckeck the compression at that cylinder? If both are good, replace the injector.

[nastys13]

okay so I just got through testing my knock sensor with a my Fluke digital multimeter set on ohms per a freinds advise. The readings it gave me were unsteady, constatly fluxuating between 1 and 5.XXX m ohms. It never held steady. Somewhere I read that a good knock sensor registers around 550 to 620 k-ohms. I'm not sure if I have to convert the number I got somehow or what. Please help, this is turning into a nightmare.

[nastys13]

anybody?

[MinisterofDOOM]

.5 M ohms is the same as 5 K ohms.

so 5 m ohms would be 5000k ohms.

5.1 m ohms would be 5100k ohms.

etc...

Mega us 1,000,000kilo is 1,000

[nastys13]

okay so my car is back to runnig normal, but I still have a check engine light? does it need to be reset somehow or what?