2005 Nissan Pathfinder Questions

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I've checked all hoses (no signs of leaks and all are pressurized and hot where they're supposed to be). I replaced the thermostat and water pump and have done some extensive radiator flushes..making sure to "burp" the system afterward. Heat still works, but not all the time. Also, both fans work and even had fan clutch replaced a few months ago. When i first bought the car i was told that it had some small oil leaks..which after working on the vehicle i noticed a decent amount of residue. Most of the time it takes a while to overheat but it eventually does every time. Could this be the radiator, the heater core, or maybe a gasket leak??
The engine just blew up on that day
Also is it common for my oil pressure gauge to fluctuate from idle to higher RPM
It started with freon being low then i refill once in a while but now it only cools but not very well when i am driving especially fast but not when i am in a traffic.
Where is the location of Fuel filter on my 2005 Nissan Pathfinder. Offroad SE
Doesn't want to shift will, but then it revs up really high when you mash the gas and drive. I've been told by a mechanic friend that I probably need a new transmission. In reading the post on here it sounds just like the same problems everyone is experiencing. I am really trying to avoid spending the money on a new transmission. My friend has a 2002 Nissan Xterra and the transmission is good in it so I need to know if it is compatible with my truck.
only does this when the gas pedal is released and the RPM goes near 1000 then bounces give out tale 250 to 300 rpm
I have a 2005 nissan pathfinder with 104,000+ miles. right now i am experiencing low gas mileage with 10.9 MPG. Its been going down for every month. Im trying to understand why? I replace the tires, belts, filters, everything and yet nothing seems to remedy it. Any advice would be helpful. thank you
i have a 05 pathfinder turns on fine but when i put it in drive or reverse n try to go is doesnt move back nor foward .. .n im getting a p1759 code as well any suggestions ...
My car is a 2005 Nissan pathfinder and I want to know if I can engage the transmission from park to neutral if the car battery is disconnected
changed the following
Glow plugs
blocked off egr
I was going to replace it and cannot located where it is. I went through owners manual and looked for it under the hood. I appreciate any help and part number.
Major oil leak from the back of the engine no oil around the valve cover its all clean
It will only go back into 1st when i stop and shut the switch off but then as soon as i shift into 4th it wont down shift. Wont go into OD either.
pump is making noise and want to replace it
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