Question about 2000 Nissan Maxima

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Not enough fuel

2000 Nissan Maxima change the fuel pump and runing lean i dont no if i need a mass air flow lost power hlep

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If its the mass air flow you should have a check engine code 171 or and 174 to change that sensor it need to be calibrate with nissan computer better be prepare its not cheap over $600 part labour and calibration good luck pierre

Posted on Mar 02, 2009

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Posted on Jan 02, 2017

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1 Answer

1998 Lincoln town car bank1 bank 2 runing lean


Could have an intake manifold vacuum leak , weak fuel pump or fuel filter clogged , mass air flow sensor dirty or bad . There are videos on youtube checking lean conditions .

Oct 19, 2016 | 1998 Lincoln Town Car

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1991 Nissan maxima hesitates


Best guess is O2 sensor is reading too much unburned fue in the exhaust for some reason and leaning out the fuel flow to compensate. Runs when you throw more throttle at it but leans out as you try to hold steady speed. Should throw a code though.

Apr 25, 2013 | 1991 Nissan Maxima

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Motor starts but slowly shuts down


P0171 is fuel trim lean,what this mean is too much air and not enough fuel, this can range from a fuel pressure to low from a weak fuel pump ,clogged fuel filter, Torn MAF (mass air flow) boot,

Nov 08, 2012 | 2000 Nissan Maxima

1 Answer

Code po171


CODE PO171 FUEL TRIM BANK 1 MIXTURE TOO LEAN. POSSIBLES CAUSES, INTAKE AIR LEAKS, AIR FLOW SENSOR 1, CLOGGED FUEL INJECTOR, EXHAUST GAS LEAKS,INCORRECT FUEL PRESSURE CLOGGED FUEL FILTER, LACK OF FUEL FAULTY FUEL PUMP,FAULTY MASS AIR FLOW SENSOR,INCORRECT PCV HOSE CONNECTION.

May 26, 2011 | 2000 Nissan Sentra

1 Answer

1998 Nissan Maxima studdering at idle and up hills between 1 & 2 RPMs. Mass air flow sensor? Also hear a hissing maybe a vaccum leak?


That vacuum leak would be causing your studder. The air flow sensor would be able to read the air coming in from a leak and wouldn't add the right amount of fuel. It would lean out, meaning it would have too little fuel for the given amount of air and just wouldn't have the power it needs. I find vacuum leaks by pinching vacuum lines until the hiss goes away and then follow that line to where it leaks. Vacuum line is cheap, less than a buck a foot, so this fix would be cheap and easy to do.

Apr 19, 2011 | 1998 Nissan Maxima

2 Answers

P0171B


It means that your engine is running lean - not getting enough fuel for the amount of air that the engine is receiving. Because your maxima is equipped with a V-6 engine, whatever the problem, it is affecting only bank #1. Bank #1 is always the side of the engine where cylinder #1 is located, or in your case, the left side of the engine as it is viewed while facing the crankshaft end of the engine.
(on a 4 cylinder engine, there is only one bank and it is always referred to as Bank #1)
There are several things that can cause a lean condition including vacuum leaks, a malfunctioning Evaporative Emissions system, a misfiring cylinder (due to bad plugs, bad injectors, or an intake or head gasket leak.), a malfunctioning Mass Airflow sensor (MAF) or Manifold Absolute Pressure sensor (MAP) or even a bad Oxygen sensor (O2s) (Nissan sometimes calls an O2s an "Air-Fuel Ratio Sensor") It is even possible for a leaking vacuum brake booster to cause a lean code.
If there are any other malfunction codes present, it may help to pinpiont the cause of the lean code. (Like a P0301 "cylinder#1 misfire detected", in which case, you would address the misfire code first.)
Certain problems, like a leaking brake booster or a bad MAF will usually set lean codes for BOTH banks.
If the P0171 is the ONLY code present, the most likely cause is a bad O2s, but I recommend some diagnostic testing to prove it before spending the mega-bucks that Nissan gets for their O2 sensors.

Oct 10, 2009 | 2000 Nissan Maxima

2 Answers

Nissan Maxima 1997 250,000 kms


could be the oxygen sensor manybe, or fuel pump

Sep 03, 2009 | 1997 Nissan Maxima

1 Answer

Hi my nissan maxima has problem


The oxygen sensors in the exhaust pipe are saying the fuel/air ratio is too lean. This commonly happens when the computer in the car reached it's limit putting out the most fuel. Therefore, the mix ratio is still lean.
The possible problem maybe:
The fuel pump not puting out enough pressure.
The fuel filter maybe clogged
The fuel injector maybe clogged or needs to be cleaned.

Were there anymore trouble codes besides the two from Autozone?

Apr 15, 2009 | 2000 Nissan Maxima

2 Answers

1988 Nissan Maxima/ Fuel Delivery


It might be the mass air flow sensor

Jul 02, 2008 | 1987 Nissan Maxima

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