Question about Nissan Pathfinder
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
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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Posted on Jan 02, 2017
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
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
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
Tips for a great answer:
Catalyst Efficiency Below Normal (Bank 1)
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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