Possible 2001 ECM Problem

Walt911 · #1 (**permalink**) 03-08-2008, 05:10 AM

Suddenly my daughters 2001 Nissan Sentra started to run very poorly with rough idle and poor acceleration she also complained of an odor. Could this be the ECM problem I have read about? Does Nissan still cover this defect and where is the ECM located? Thanks.

vpnavy · #2 (**permalink**) 03-08-2008, 08:27 AM

Is you Check Engine Light on? If so, run it up to you local Auto Store (i.e., AutoZone, etc.) and let us know the code.

Walt911 · #3 (**permalink**) 03-08-2008, 10:24 AM

Yes, engine light came on and the code was P0301-engine misfire. I did have a P0420 code appear several weeks ago but once it was cleared it did not return.

I pulled all the spark plugs this am and one plug shows signs of not firing. Replaced all plugs but engine still will not run correctly. Could it be a bad coil and does anyone know how to check with an ohm meter? Anything else I can look at.

vpnavy · #4 (**permalink**) 03-08-2008, 10:38 AM

Quote:

Originally Posted by Walt911

Yes, engine light came on and the code was P0301-engine misfire. I did have a P0420 code appear several weeks ago but once it was cleared it did not return.

I pulled all the spark plugs this am and one plug shows signs of not firing. Replaced all plugs but engine still will not run correctly. Could it be a bad coil and does anyone know how to check with an ohm meter? Anything else I can look at.

Until a Specialist replies...I pulled both codes from your Service Manual Section EC - ENGINE CONTROL SYSTEM.

2001 Sentra DTC-0301 and DTC-0420 CODE PDF FILE

Hope this helps...