Rough idle P1305 P1320 P0140

A forum for the legendary Nissan Pathfinder and Infiniti QX4.
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zach7685
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Car: 2002 Infiniti QX4
2001.5 Nissan Pathfinder SE
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1968 Mercedes 230-Sold
2005 VW beetle Convertible
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Hey Guys I'm having the worst luck with my pathfinder. :tisk: To start out i got this car last month for a fair price. It was great until the it started being wrecked. The first accident was because by brake booster vacuum line broke and i rear ended a Prius. did about 4,500 damage to the Prius... I waxed not buffed the scratches out of my bumper cover. Then a hummer pulled out in fornt of me and i hit him. He won that one. ill post pics if i can figure out how. any way iv been driving it the way it is but as some of you know my MAF went out so I swiped it out. ran fine. now the problem is really rough idling and a flashing check engine light. my first thought was the MAF is going again but now i think its the coils and plugs as one of the code read cylinder 5 misfire. has any one else gone through this and found a good set of replacement coils? Let me know.


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zach7685
Posts: 449
Joined: Wed Apr 11, 2012 9:26 pm
Car: 2002 Infiniti QX4
2001.5 Nissan Pathfinder SE
2003-Subaru Baja
1989 Nissan Maxima
2003 GMC Savanna
2002 Mini Cooper S
1968 Mercedes 230-Sold
2005 VW beetle Convertible
2001.1 Nissan Pathfinder LE
Location: South Carolina-USA
Contact:

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Towncivilian
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This is for your 2001 Pathfinder, correct? What is its manufacturing date (found on the driver door jamb sticker)?

P0140 is a rear oxygen sensor code and is irrelevant with your driveability issues. Once you provide your manufacturing date I can find a replacement sensor.

P1305 doesn't exist. You mean P0305 (cylinder 5 misfire). Make sure the coil pack's wiring harness is still connected, and maybe try reseating it. How many miles are on this Pathfinder?

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zach7685
Posts: 449
Joined: Wed Apr 11, 2012 9:26 pm
Car: 2002 Infiniti QX4
2001.5 Nissan Pathfinder SE
2003-Subaru Baja
1989 Nissan Maxima
2003 GMC Savanna
2002 Mini Cooper S
1968 Mercedes 230-Sold
2005 VW beetle Convertible
2001.1 Nissan Pathfinder LE
Location: South Carolina-USA
Contact:

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How do i check the harness i wiggled them and that did nothing. Its one of those weird dates 7/00 so its got the more expensive /A remotes and stuff which i need btw.

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Towncivilian
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Car: 2001.5 Nissan Pathfinder SE 3.5L 2WD A/T
2007 Nissan Altima 2.5L CVT
2012 Nissan Sentra 2.0L CVT Special
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Location: Florida, USA
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Just ensure it's plugged in and the terminals are not corroded. How many miles do you have on this PF?

P0140 requires replacement of the bank 1 rear oxygen sensor (bank 1 is passenger's side). This sensor is a direct fit, plug and play. Bosch is the original OE manufacturer for the oxygen sensors.

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zach7685
Posts: 449
Joined: Wed Apr 11, 2012 9:26 pm
Car: 2002 Infiniti QX4
2001.5 Nissan Pathfinder SE
2003-Subaru Baja
1989 Nissan Maxima
2003 GMC Savanna
2002 Mini Cooper S
1968 Mercedes 230-Sold
2005 VW beetle Convertible
2001.1 Nissan Pathfinder LE
Location: South Carolina-USA
Contact:

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175K and do you mean the individual harnesses? Or am I missing something.

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Towncivilian
Posts: 4868
Joined: Sun May 23, 2010 10:21 am
Car: 2001.5 Nissan Pathfinder SE 3.5L 2WD A/T
2007 Nissan Altima 2.5L CVT
2012 Nissan Sentra 2.0L CVT Special
2012 Infiniti G37 Sedan 7A/T
Location: Florida, USA
Contact:

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Each coil pack has its own harness that plugs into it, just make sure it's intact and securely connected.

Were the spark plugs replaced around 105k? If not, or you don't know, replace them. There's an excellent replacement guide here.

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zach7685
Posts: 449
Joined: Wed Apr 11, 2012 9:26 pm
Car: 2002 Infiniti QX4
2001.5 Nissan Pathfinder SE
2003-Subaru Baja
1989 Nissan Maxima
2003 GMC Savanna
2002 Mini Cooper S
1968 Mercedes 230-Sold
2005 VW beetle Convertible
2001.1 Nissan Pathfinder LE
Location: South Carolina-USA
Contact:

Post

I got it fixed... ish the codes for the O2 sensors are still there so i think i fouled them. Ill be replacing them soon. To fix it i replaced coil pack #5


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