Pathfinder is having some issues - Pirate4x4.Com : 4x4 and Off-Road Forum

BustedCrawler · 05-16-2012, 06:23 PM

So the past couple days it's been real slow. When I am on the highway it's doing about 55mph and that's it. If I'm going down hill it will get up to 65-70mph and be just fine. But it will slow down. Going up hill on the highway it wants to slow down to 45mph unless you mash the gas pedal. It's all stock. Sitting on 31 inch mud terrain tires. Small lift. 3.0 v6 should be able to push this thing a little quicker..... It has a little street tune on it. ( Previous owner ) He did it to pull his rail buggy trailer? So I know due to the tune it runs just a little rich. He said when I asked about this it's caused by the o2 sensor needing cleaned. He said take it out and clean it then it will be fine. How much of this is bs and how much is correct? I notice it has a very little miss. I notice is when I come to a stop sometimes. He said all of this is caused by the o2. I am just trying to get a little help so I can hopefully get this squared away.

Midget28 · 05-17-2012, 07:17 AM

Have you checked anything? Plugs,cap,rotor, fuel filter? Start there & find out if the timing chain has been replaced. Ive never heard of any successfully "cleaning" an o2 ssensor they generally just get replaced.

BustedCrawler · 05-17-2012, 07:23 AM

Timing belt has been replaced. Haven't gone threw the other stuff so I guess I will start there.

05-16-2012, 06:23 PM	#1 (permalink)
BustedCrawler Registered User Join Date: Sep 2011 Member # 198260 Location: Harrison OH Posts: 12	Pathfinder is having some issues So the past couple days it's been real slow. When I am on the highway it's doing about 55mph and that's it. If I'm going down hill it will get up to 65-70mph and be just fine. But it will slow down. Going up hill on the highway it wants to slow down to 45mph unless you mash the gas pedal. It's all stock. Sitting on 31 inch mud terrain tires. Small lift. 3.0 v6 should be able to push this thing a little quicker..... It has a little street tune on it. ( Previous owner ) He did it to pull his rail buggy trailer? So I know due to the tune it runs just a little rich. He said when I asked about this it's caused by the o2 sensor needing cleaned. He said take it out and clean it then it will be fine. How much of this is bs and how much is correct? I notice it has a very little miss. I notice is when I come to a stop sometimes. He said all of this is caused by the o2. I am just trying to get a little help so I can hopefully get this squared away. Last edited by BustedCrawler; 05-17-2012 at 06:27 AM.

05-17-2012, 07:17 AM	#2 (permalink)
Midget28 Registered User Join Date: Feb 2009 Member # 130105 Location: What Cheer Posts: 813	Have you checked anything? Plugs,cap,rotor, fuel filter? Start there & find out if the timing chain has been replaced. Ive never heard of any successfully "cleaning" an o2 ssensor they generally just get replaced. __________________ "TO BE OLD AND WISE YOU MUST FIRST BE YOUNG AND STUPID"

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05-17-2012, 07:23 AM	#3 (permalink)
BustedCrawler Registered User Join Date: Sep 2011 Member # 198260 Location: Harrison OH Posts: 12	Timing belt has been replaced. Haven't gone threw the other stuff so I guess I will start there.