Question about Hyundai Motor 2002 Sonata

1 Answer

2002 Hyundai Sonata wont pass smog

Will not pass emissions High NOX GPM reading 2.1 but need 1.5. Checked codes said O2s sensor changed. Changed oil. Still failed now has code 0328 knock sensor 1 circuit high Input (bank 1 or single sensor). Also the car when you fuel has hard time starting. Runs good all other times

Posted by on

  • 0nce around Sep 03, 2008

    1999 hyundai sonata 2.4 failed emissions test high nox reading, what might be the problems

  • Jazel13 Jan 23, 2009

    2000 Sonata has high NOX.Won' pass smog. Took to 4 different shops!!! Spent over $1,000 on 02 sensors, engine etc. cleaned and checked for carbon build up. Last shop said it was because compression too high, but they don't know why. Said they'd have to take the engine apart to find problem! AUGH! WHAT COULD IT BE? I can't afford to pay for rebuilding engine; I was in a rush to buy my Daughter a car (she works 2 jobs!) and bought this car w/o seller smogging it first, now we are stuck with "CA no pass smog" problems. DOES ANYONE HAVE ANY SUGGESTIONS ON WHAT ELSE THE PROBLEM COULD BE??? Wish us LUCK!

×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

CA you can take the car to a referree and get a one time waiver if you have spent a minimum of $450 on repairs not including smog fees. Gives you two years to get it fixed. Smog Referee Call Center
Toll Free: 1.800.622.7733
You can also sell the car to the state for "up to" $1,000

Posted on Feb 01, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Failed emissions hc high


First I recommend changing spark plugs, air filter, and change the oil & filter. If these are dirty or fouled up it will kill your millage and help to fail smog.
You can reduce both NOX and CO emmissions by adding denatured alcohol to the gas tank. Run it down to a bit under 1/4 tank and add 1 1/2 gallons. It makes the engine run a bit rough, but really clean.
If you still fgail SMOG then you need a new catalytic converter.
I used to "trick" my 86' with alcohol, but just rebuilt the engine so I put a new Cat on it. It passed emissions with WELL BELLOW numbers.

Good luck.

Aug 08, 2014 | 1991 Toyota Pickup

1 Answer

Check engine lite was on changed right bank 02sensor took back to be smogged still didn't pass shows the other 02sensors gave acitivity but the one i changed does not . this make 3 times i have change


Probably something in the wiring harness or the engine computer.
A mechanic would watch the data stream from the O2 sensors to troubleshoot. You should also have trouble codes for the sensor in question.

Feb 04, 2014 | 2000 Hyundai Sonata

1 Answer

My 88 buick limited wont pass smog hc is 169 at low idle changed map sensor and oil still wont pass but car runs fine.


Are you burning oil? Does this car still have a catalytic converter? Have you changed spark plugs or air filter recently. There are many causes for a high hydrocarbon reading: burning oil due to rings or valve stem seals; catalytic converter malfunctioning or missing; vehicle in need of a tuneup or air filter replacement. Poor combustion results in high hydrocarbon levels. Good luck with it.

Sep 29, 2013 | Cars & Trucks

1 Answer

Fail smog test


fist i would like you to post the year make and model of the truck along with the HC ppms and NOX ppm it would be very helpful but high hc and nox can be attributed to a faulty EGR system nox is produced when the combustion chamber temperature gets too high so a small amount of exhaust is cycled back into the air stream to help cool them there are other causes but without looking at the levels its much harder to say

Dec 06, 2012 | Cars & Trucks

1 Answer

How to install a EGR valve on a 2003 Nissan Xterra


EGR is for NOX

Too Rich a fuel mix is HI CO

Are the front or upstream oxygen sensors over
100,000 miles?
Air Filter new?
Always change oil before inspection & use full synthetic
Spark plugs over 2 or 3 years,won't pass insp
Clean MAF Sensor

Nov 23, 2012 | 2003 Nissan Xterra

1 Answer

Hyundai sonata 2000 gls. v6. HAs no EGR. Emission test, first try, HC(0) CO (0) nox 1033 mechanic said my engine seems hot (there was also heat out of vents blowing out. I cleaned my maf sensor and...


Borrow or change the MAF completely,you have a LEAN combustion condition.The MAF could very well be the problem as it is the most common source lean combustion.
You will need a catalytic converter in good shape.

Apr 08, 2017 | 2000 Hyundai Sonata

1 Answer

02 kia fail smog high nox


if the engine computer says that you have a slow O2 sensor what it means is that the sensor does not react as quickly as it should and it needs to be replaced. nox is oxides of nitrogen, a product of too lean combustion which causes cylinder temps to go too high. it sounds like replacing O2 sensor will make it happy. engine computer is having a hard time controlling lean/ rich fuel mix because sensor is slow to register changes, needs to have response time in milliseconds or engine computer can't operate properly. O2 sensors do wear out, normal service item. hope that helps

Jun 17, 2009 | 2002 Kia Optima

1 Answer

1994 Mazda Protege 1.8 SOHC failed emissions HELP!


have your EGR system checked . sounds to me like its not working or clogged

May 03, 2009 | 1994 Mazda Protege

1 Answer

Failed Smog Test - 4 codes for 2001 Isuzu Rodeo


Tune it up and replace the 02 sensor that keeps setting the codes bank 2 sensor 1. Have your oil and filter changed right before you go for a retest to. That will clear up 3 codes P0300, 0155 and 0154. You might have to replace the fuel sending unit to get rid of P0463 but if the gauge works OK I'd leave it alone.

Jan 12, 2009 | 2001 Isuzu Rodeo

1 Answer

2001 Sonata V6, Smog failed - high NOX


if i were you i would contact cragen and ask them if the car has it and how much the replacement part is

Aug 19, 2008 | 2001 Hyundai Sonata

Not finding what you are looking for?
Hyundai Motor 2002 Sonata Logo

666 people viewed this question

Ask a Question

Usually answered in minutes!

Top Hyundai Experts

yadayada
yadayada

Level 3 Expert

70347 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22041 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6876 Answers

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

Answer questions

Manuals & User Guides

Loading...