Question about 2005 Nissan Altima

2 Answers

Poor fuel mileage with my 02 nissan altima

I recently had to remove the Catalytic converter from my 02 nissan altima because it had gotten stopped up. I know i need to replace it, but wilt that cause poor fuel mileage?

Posted by on

  • Anonymous Mar 15, 2014

    Poor fuel mileage

×

2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Depending on how many miles you have on your vehicle, i would check with the dealer on that year car .. They usually warranty catalytic converters for 8yrs or 96,000 miles . Its worth checking if it gives you a free replacement..

Posted on Feb 22, 2009

  • Paul Gorman May 04, 2012

    The catalytic converter is a passive component. If it is not working, the cause is elsewhere. By not finding the source of the problem before installing a new converter, the replacement is destined to fail as well.

×

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 3,533 Answers

Yes it very possible because the catalytic converter is part of the emissions and you need to ask yourself when was the last time you had a good tuneup drive belt,sparks and wires if needed and a fuel filter and a pvc valve.

Posted on Feb 09, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Po157


Oxygen sensor passenger side, after catalytic converter. Any symptoms, like poor mileage, running rough? Any exhaust work done recently?

Nov 20, 2013 | 2004 Dodge Durango

1 Answer

Clogged catalytic converter


Replace with genuine unit or you will have cpu problems. Stop what ever is causing it to block up.( Leaded fuel or incorrect oil or excessive oil consumption)

May 04, 2013 | Nissan Altima Cars & Trucks

1 Answer

Altima code 507


507 is a catalytic converter code that the computer throws when the oxygen level is below 95% of max. Altima's don't generally have that issue so i would lean more towards an 02 sensor. usually its the upper 02 sensor. start there.

Dec 01, 2012 | 2002 Nissan Altima

1 Answer

2005 Nissan Altima service engine light came on, Had a reading = P0420, #1 aa1 Large vacumm leak, #2 aa2 Fuel system fault, #3 aa3 Ignition system fault and #4 aa4 Failed Bank 1 catalytic converter. Any...


one thing you can bet the house on ....if a nissan sets a cat converter code...it needs a cat converter...trust me on this.in the last 10 yrs. as nissan master tech i have seen no other cause!

Mar 18, 2011 | 2005 Nissan Altima

1 Answer

Engine lopes whan accelerator is pushed,poor gas


WEAK FUEL PUMP OR STOP UP FUEL FILTER.RESTRICTED EXHAUST LIKE STOPPED UP MUFFLER OR CATALYTIC CONVERTER.LOW ENGINE COMPRESSION.VACUUM LEAKS IN THE INTAKE MANIFOLD.BAD PLUGS.WEAK SPARK OR IGNITION .

Jun 05, 2010 | Ford F-250 Cars & Trucks

1 Answer

Check engine light on. took the car to auto zone to put it on a scanner. trouble code p0420. catalyst system efficiency below threshold. probable cause; large vaccum leak, fuel system fault, ignition...


Diagnostic code produces P0420 catalyst system efficiency below threshold-Bank 1. Probable causes are listed as follows:
1-air leak in exhaust before rear 02 sensor, 3-Fuel system fault,
4-faulty catalytic converter.

May 31, 2010 | 2001 Nissan Altima

3 Answers

Receiving engine code p0420 on my 2005 altima 2.5 s


A p0420 code indicates a Catalytic System efficiency failure, Bank 1.
Basically, the computer is seeing reduced efficiency of the catalytic converter or one of it's components (such as an 02 sensor)

There may be a few root causes, such as a faulty oxygen sensor, faulty coolant temperature sensor, faulty converter, Large exhaust leak, or retarded (slow) timing.

Nov 30, 2009 | 2005 Nissan Altima

5 Answers

Nizzan 02 Black smoke coming out tailpipe and consumption of oil


Black smoke is caused by excess fuel that has entered the cylinder area and cannot be burned completely. Poor fuel mileage is also a common complaint when black smoke comes out of the tailpipe. Black smoke out the tailpipe is the least cause for alarm. Excess fuel will usually effect engine performance, reduce fuel economy, and produce a fuel odor. Some of the causes of excess fuel are a carburetor that is out of adjustment, a faulty fuel pump, a leaky fuel injector, or a faulty engine computer or computer sensor. If black smoke is present, check the engine oil to make sure excess fuel has not contaminated it. Do not start the engine if a heavy, raw fuel smell can be detected in the engine oil.

Aug 13, 2009 | 2002 Nissan Altima

1 Answer

Poor fuel mileage


what kind of exhaust do you got, the converter actually may help get better mileage. scan egr for errors in emmisions, get the timing checked mabe running rich, check pcv valves,test knock sensor, 02 sensor( scan might not pick up) lemme know how it goes

Mar 02, 2009 | 1996 GMC Sierra

2 Answers

Poor fuel economay, fuel mixture to rich


the upstream sensor is the probable cause (ahead of catalytic converter)

Aug 05, 2008 | 2002 Nissan Altima

Not finding what you are looking for?
2005 Nissan Altima Logo

570 people viewed this question

Ask a Question

Usually answered in minutes!

Top Nissan Experts

yadayada
yadayada

Level 3 Expert

60541 Answers

Phil Lovisek
Phil Lovisek

Level 3 Expert

705 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21927 Answers

Are you a Nissan Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...