1995 Maxima Stumbling Issue

[95Maxima719]

The other day my car started acting up, i noticed a stumbling when stopped or coming to a stop, i changed all the spark plugs hoping that was it and still nothing. I then pulled the codes and got a 0701 which indicates a mult cylinder misfire. I was wondering how this happens or if anyone has any info on how to fix it. I SEARCHED found a thread that stated about engine start troubles. I have no trouble starting my car it starts fine, just has a stumble at low rpms..... I also see that coils could be a key factor here as well, if so how do i check the coils? Any info or answers is greatly appreciated

Thanks

O and PS i accidentally knocked it into neutral the other day while on the highway could this be a reason?

UPDATE: So i just spent four hours working on my car to try and figure out what it is doing. I ran every test possible, checked all the coils:

Ran resistance(ok)Voltage(ok)Spark(ok)

So it wasn't the coils

Checked the compression on all 6 cylinders, all were good the, misfiring cylinder had the best compression actually

After doing all this checked the O2 sensors, both came back not good on the VOM.

So we came to the conclusion that i have 2 bad O2 sensors and a bad injector causing it to run rich/lean....therefor causing the stumbling

So tomorrow we are goin to pull 2 O2 sensors off another Max and an injector see if that fixes it, if not its goin to nissan and i guess i'm goin to just have to sit there and take it like fresh prison meat95Maxima719 is online now Report Post Edit/Delete Message

[loystock]

There are so many reasons for a car to stumble. You may have a dirty fuel filter (located on the firewall besides brake booster). Ensure the fuel line is empty before disconnecting the fuel filter- FIRE HAZARD. Pull the fuel pump fuse with the engine running until the car dies. Crqnk at least once to ensure line is empty. A good fuel filter should have have very little resistance (or none at all) when you blow air thru it.

Check the air filter. When was the last time you cleaned the MAF sensor-connector and checked the condition of the throttle valve? Have you checked the Knock Sensor resistance (@ 550K ohm)?