Question about Nissan Pathfinder

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2004 nissan pathfinder has trouble accelerating. Was told the catalytic converters needed to be replaced, got them done as well as oil change for about $1900. The same problem still occurs a day later and now i'm being told its because i need a tune up. Does this sound correct?

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  • Nissan Master
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It could be a long list of possible causes. I would talk to the shop about a refund on the cost of the cats since that did not fix the problem. Then probably try another shop.
The fuel pressure should be checked, the engine computer should be checked for trouble codes, and a general checkup of the drivetrain.
Very seldom does a vehicle need more than one cat at the same time.
Its possible the truck does in fact need a tuneup which is mainly replacing the plugs and the fuel and air filters.

Posted on Feb 15, 2014

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  • Nissan Master
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NO --it does not sound correct== For starters the CPU in the ECM continually checks all sensors and adjusts the tune up every few seconds and when the parameters of a sensor are out side the settings a fault will be recorded that can be down loaded by a code reader and the faulty unit replaced . So if you have the codes read and it shows up as misfiring there is a list of possible sensors that will cause this . Plugs-HT leads -coil/s -injectors - pump pressure So you are not guessing as to what to tune -up. Your problem originally was acceleration and the fault codes may have read --HO2S sensor or MAF/MAP sensor or accelerator position sensor. You will notice that there is no mention of failed cat converters which in reality will only give a problem at high rpm's /heavy loads as they crack and block off the exhaust system

Posted on Feb 15, 2014

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SOURCE: Rear acceleration noise

Try rear wheel bearings. The cause a roaring noise that increases with acceleration. Sounds very similar to loud road noise.

Posted on Dec 05, 2008

MrScary66613
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SOURCE: sqeualing noise comes from belts on cold days

It is your Belt Tensioner. You will need to Locate the Belt Tensioner. It has a Large Pulley on a Bracket that Has a Bolt in the Middle and a Smaller Pulley that Goes Under the Belt and Holds Tension on it. You will need to get a Wratchet, Socket, and Cheater Bar. Turn the Bolt On the Top Large Pulley with the Wratchet and Cheater Bar. This will Lower the Smaller Pulley So that you will be Able to Remove the Belt. and Replace the Tensioner Pulley Assembly. Please Rate My Response! Thanks!

Posted on Feb 03, 2009

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SOURCE: Check engine,2000 Nissan Maxima

same things happens on me. $500 more on replace senor, $1000 more on bank2, now $1500 on bank1.
F*ck damned Nissan car. The solution is never ever buy a nissan car

Posted on Oct 31, 2009

demonsm
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SOURCE: Have 2003 Nissan Pathfinder. Engine rattles under acceleration.

I would have to hear it. may be the engine mounts.

Posted on Nov 27, 2009

airjer995
  • 5332 Answers

SOURCE: My 2004 Nissan Quest ignition coils keeps going bad?

Each coil has three wires. The black wire is a dedicated ground. The Red wire is a dedicated power supply. The remaining wire is the control wire from the computer.

There should always be ground no matter what.

There should always be power with the engine cranking or running.

The control wire is best looked at with a lab scope. You should see a square wave when the computer fires the coil.

Out of curiosity what brand of plugs do you have installed in the vehicle?

Posted on Jan 17, 2012

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1 Answer

P0420 Code on my 97 Pathfinder ...looses Horsepower at 3200 Rpm


Trouble Code: P0420

Catalyst Efficiency Below Normal (Bank 1)

Possible Causes:


Air leaks at the exhaust manifold or in the exhaust pipes.Catalytic converter is damaged, contaminated or has failed.Front HO2S or rear HO2S is contaminated with fuel or moisture.Front HO2S and/or the rear HO2S is loose in the mounting hole.Front HO2S older (aged) than the rear HO2S (HO2S is lazy).

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Just had catalytic converter replaced. A week later the car developed a rattle while accelerating and the check engine light came on. Now the oil light is coming on while acceleratting


Sounds like the mechanic who changed the Cat Converter hit the wires to the oil sending unit or a metal shield on the engine that needed to be removed to replace the Cat was not put back properly and is so loose it is hitting the wire to the oil sensor... Get it checked out by a RELIABLE mechanic...

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Rough Idle and problem accelerating. What could be the problem?


Thats the same EXACT symptoms my moms truck was having! Until i hollowed out the catalytic converters! Obviously, if you have emissions, you have to replace them(We don't).
Good Luck!

Jun 23, 2012 | Cars & Trucks

1 Answer

My 2000 Nissan Pathfinder runs good when first starting up but as it warms up it begins to sputter when accelerating and the rpms jump, but does't get good acceleration. I've replaced the fuel...


Change your plugs and run a couple of bottles of injector cleaner through it. Sounds like you have some carbon buildup. Also check the catalytic converter for excessive back pressure. i hope this helps.

Aug 06, 2011 | 2000 Nissan Pathfinder

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The engine light in my car came on about 2 and a half weeks ago. I brought it to the mechanic for a diagnostic test and they said that my catalytic converter needs to be replaced. My engine has been...


Your car does in fact need a new catalytic converter. And it should also not burn a drop of oil. It can burn oil as it seeps past leaking intake valves and piston rings.

I highly recommend you do not even start the engine again until the exhaust and intake valves have been inspected and replaced as needed, it has a new catalytic converter and a complete tune up.

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2 Answers

Have 2003 Nissan Pathfinder. Engine rattles under acceleration.


I would have to hear it. may be the engine mounts.

Nov 27, 2009 | 2005 Nissan Pathfinder

2 Answers

Bad catalytic converter?


Log onto www.partstrain.com. I believe they have Catalytic converters for your pathfinder for under $200.00, there OEM direct fit which means no cutting other then removing the old bolts.
If it is the Catalytic converter you can always buy it from on line and have a muffler shop install it like speedy or midas. Make sure you ask for stainless bolts and nuts.
Before you go through all the trouble, re check the DTC codes. Most of the time it's the O2 sensors that go bad and i question the garage charging you so much for the replacement of a catalytic converter.
Good luck and keep me posted.

Jun 01, 2009 | 1994 Nissan Altima

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Engine using oil. No sign of leaking. Catalytic converter replaced 13 months ago, now needs replaced. Told need new engine. What is causing the catalylic converter to plug?


Was a leak down test performed on the motor?This will determine if the oil loss is due to bad rings or a head gasket.A head gasket can be repaired,rings will require an overhaul or new motor.Have checked the coolant for oil contamination?

May 31, 2009 | 2002 Nissan Altima

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