Stumbling Dying Pathfiner - Nissan Forum

 
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#1 Old Feb 16th, 2012, 08:58 AM
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Stumbling Dying Pathfiner

I have a 2001 Pathfinder that has gone through the gamut of SES codes including the 0420, 0430, 1140, and so on. So I have corrected these issues by replacing the two front cam position sensors and all four O2 sensors. I also took the Pathfinder to the local dealer and had them update the ECM software according to the Nissan Bulletin relative to these SES codes. So I now have a vehicle with no SES codes. However, the initial problems I was having (other than SES codes) still persist.

First, the vehicle slightly stumbles on acceleration of the line and even worse under hard acceleration. The stumble seems to occur between 2500 and 4000 RPM. Second (and most aggravating), the vehicle will not idle at a traffic light or stop sign for more than 20-30 seconds. After that, the engine dies. This problem persist whether in Drive or in Park. Another note relative to these two issues, they only occur after the engine warms up. Additionally, these issues seem to be getting worse. At the onset of these problems, I could turn on the AC and that would seem to place enough load on the engine to keep it running. Not sure why. I have also had the alternator and battery checked and both function properly.

If anyone can offer any insight as to what might be the root cause of these two issues I would greatly appreciate the help.
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#2 Old Feb 19th, 2012, 11:00 AM
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Check Temp sensor (that controls mixture also.

Only Idea I have sorry.

2003 Pathfinder from 2004 SE 4WD
1997 SER 5sp Manual from new Rear Ended 2009 !!
Gone to the Knacker yard...
New ride 3.0 manual RWD not a Nissan !!!
1997 Sentra GXE from new .... Sold 2008
2001 Sunny N16 RHD from new (N16 Nissan Bluebird Sylphy) Sold
#3 Old Feb 19th, 2012, 03:16 PM
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Several things to check:
- dirty spark plugs
- dirty air filter
- incorrect ignition timing
- major intake vacuum leak
- incorrect fuel pressure

KA-T for life, yo!
#4 Old Feb 28th, 2012, 02:41 PM
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Any idea where the air charge temperature sensor is located on the engine?
#5 Old Feb 28th, 2012, 10:53 PM
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Quote:
Originally Posted by pstapler View Post
Any idea where the air charge temperature sensor is located on the engine?
Coolant temp is only one I can find, Air temp should be taken care of by Air Mass flow meter.

2003 Pathfinder from 2004 SE 4WD
1997 SER 5sp Manual from new Rear Ended 2009 !!
Gone to the Knacker yard...
New ride 3.0 manual RWD not a Nissan !!!
1997 Sentra GXE from new .... Sold 2008
2001 Sunny N16 RHD from new (N16 Nissan Bluebird Sylphy) Sold
#6 Old May 18th, 2012, 12:33 AM
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I am working on a 1993 pathfinder with similar issues runs fine until it warms up. I want to check the temp sensor but I do not have the specs for it. Can someone point me in the right direction to find the specs?

Thanks in advance.

David

Last edited by dlespron; May 18th, 2012 at 12:38 AM.
#7 Old May 19th, 2012, 02:41 PM
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Never found the air temp sensor. Bought one but could never find anything that looks similar to what I purchased.

I have now replaced the spark plugs and all 6 coils because I started getting a code 1320. Stumbling Dying issue still exists and code 1320 still exists.

So I now have all new O2 sensors, all new cam postion sensors, all new spark plugs, all new coil packs, new air filter, and the ECU has been flashed (supposedly). Nothing has fixed the problem.
#8 Old May 20th, 2012, 02:29 AM
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Did you use NGK spark plugs? I've seen a number of problems with aftermarket plugs in Nissans, especialy Bosch platinums. Air temp sensor is located behind the left side foglamp. I have heard of some issues with the harness connectors for the ignition coils have poor connectivity. You might also try cleaning the MAS hotwire with MAS cleaner or electrical contact cleaner. It wouldn't cause the P1320 code, but a dirty hotwire could cause engine stalling or stumbling.
#9 Old Jun 4th, 2012, 02:08 PM
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I HAVE A 98 PATHFINDER WITH SAME SYMPTOMS AS YOUR VEHICLE. THE PROBLEM IS WITH A DEFECTIVE MAF SENSOR OR BAD CONNECTION IN MAF WIRING PLUG AND OR HARNESS. START UP YOUR VEHICLE TO OPERATING TEMP AND WIGGLE THE CONNECTOR PLUG AND WIRES AT MAF SENSOR. IF THE ENGINE STALLS / CUTS-OUT, YOU MAY HAVE FOUND THE PROBLEM. I HAVE A MAF SENSOR ON ORDER FOR MY VEHICLE. THIS SHOULD FIX MY PROBLEM. LET ME KNOW IF YOU FIND A SOLUTION TO YOURS.
#10 Old Jun 4th, 2012, 02:16 PM
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I HAVE A 98 PATHFINDER WITH SAME PROBLEMS AS YOURS. I HAD ALL THE OBVIOUS IGNITION POSSIBILITIES CHECKED. NO CHANGE,UNTIL I MOVED OR WIGGLED THE CONNECTOR PLUG AND WIRES AT THE MAF SENSOR. THIS PRODUCED SYMPTOMS OF IDLE CHANGE AND ENGINE STALL OR CUT-OUT. THIS WAS DONE WITH THE ENGINE AT OPERATING TEMP AND IN PARK. YOU MAY HAVE A BAD MAF SENSOR OR SHORT IN WIRING. I HAVE A MAF ON ORDER FOR MY VEHICLE. LET ME KNOW IF THIS INFO WAS USEFUL.
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