Question about 1998 Nissan 200SX

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Hello what you need to do is throw a fresh set off plugs in the motor go to your parts store ask to buy a bottle off emmission pass follow the instructions you should be okay goodluck please rate

Posted on Oct 02, 2008


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Hello, do you have any idea why my 2008 Nissan Serena is losing power when going over hills? I have already changed a bunch of stuff like plugs, transmission oil, gas filter and pump but the problem still...

If you cannot quickly accelerate, might be catalytic converter, oxygen sensors, mass air flow (MAF) sensor. Might even be EGR valve. Have trouble codes read at the auto parts store for free and update y ok ur post for me gelp.

Dec 21, 2014 | Cars & Trucks

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High nox on emmission but no engine codes

Check for a vacuum leak by doing a smoke test and see where the smoke is pulled into the vacuum line.

May 25, 2017 | 2002 Mazda Tribute

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Catalytic converter

your car is dumping too much fuel into combustion chamber-I'd try to get that fixed first-take it to a shop and let them diagnois-autozone,advanced auto will hook up for free-cheers Denny

Nov 05, 2013 | Volkswagen Polo Cars & Trucks

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I have a 1998 Nissan Maxima GLE, I Failed the Emission Inspection (DTC) Diagnostic Trouble Codes of "P1492","P1105" What these Codes exactly? mean

A code P0300 may mean that one or more of the following has happened:
  • Faulty spark plugs or wires
  • Faulty coil (pack)
  • Faulty oxygen sensor(s)
  • Faulty fuel injector(s)
  • Burned exhaust valve
  • Faulty catalytic converter(s)
  • Stuck/blocked EGR valve / passages
  • Faulty camshaft position sensor
  • Defective compute
  • P1105MAP/BARO Pressure Switch Solenoid Valve
  • Check and clean the MAP sensor, or replace.
  • P1492EVAP Canister Purge Control/Solenoid Valve (Circuit)
  • Replacing the purge solenoid will clear code P1492 This should also clear code P0300 as well.

Oct 16, 2012 | 1998 Nissan Maxima

1 Answer

Have a2005 deville with the code po741 cant pass ca. smog need to what dose it takes to fix this problem


Code P0741 = Torque Converter Clutch Circuit Performance or Stuck Off. This relates to your transmission only and has nothing to do with Exhaust emmissions.

If failed smog test, there must be an issue within your emmission system, e.g. sensors etc

You will need to have your codes read again, or have your vehicle properly inspected.


Jun 14, 2011 | Cadillac DeVille Cars & Trucks

1 Answer

High Nox levels on emmission test

here are the possible causes of high nox levels, Misfire condition
Malfunctioning or improperly adjusted EGR valve
Failed oxygen sensor
Leak in exhaust tubing upstream of converter
Excessive carbon deposits in combustion chamber
Improper spark advance
Blocked coolant passage
Overly lean air-fuel mixture
Damaged cold air duct
Failed or malfunctioning catalytic converter
Corroded or damaged engine sensor electrical connections.the best advice is to take it to a emission specialist to check it out! good-luck!

Apr 29, 2011 | 1995 Mercury Tracer

1 Answer

Engine code p1140 n p0505 not sure what they mean for 1998bmw 740il trying to pass emmission test.

Generally when u can not pass the emission test your catalytic converter needs to be replaced. J.

Sep 27, 2010 | 1998 BMW 7 Series

2 Answers

I have a Pontiac Vibe 2003 P0420 error code. What

Basically, your on board computer is telling you your catalytic converter is not working properly. As you know, you have a sensor in front and in back of the converter. The computer compares the waveforms from each sensor. If the sensor waveform before and after the cat are the same, then the cat is not working. You should have an analysis of the waveforms at each sensor analyzed at a shop and, if they are the same, the dealer should replace the cat if it is still under warranty. Most common would be the O2 sensor after the Catalytic converter has failed and will need to be replaced. It takes about 15 min to replace and any muffler shop can replace the O2 sensor for you.

Good luck

Dec 09, 2009 | 2003 Pontiac Vibe

1 Answer

1986 300zx failing low speed NOx emissions test in Texas. Changed cat converter and egr contol valve. What should I look at next? All other checks are OK

these cars are known to have injector failures and that would make you fail a emmission test easily. also i would reccomend looking at your oxygen sensor.

Jun 09, 2009 | 1996 Nissan 300ZX

1 Answer

1994 altima failed emmision for co

Change the oil, this should lower it enough to get you through, also run the car on the freeway if possible to heat up the catalytic converter as much as possible, leave it running and wait for the test to be run, I was a smog tech for years and these are the tricks I used to get cars to pass that were as close to the limit as yours.

Oct 03, 2008 | 1994 Nissan Altima

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