Question about 2003 Mercedes-Benz CLK-Class

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Failed emmission test, saying it is misfiring, and problems with the ultra censors

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  • illestaries May 11, 2010

    WHAT KIND OD CAR WHAT KIND OF SENSOR ?

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You need to have your plugs and wires replaced.

Posted on May 01, 2009

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Posted on Jan 02, 2017

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2007 Pontiac 3.8 6 cyl. misfiring. I exchanged the plugs, wires, and coil pack. are there any censors that could cause my problem?


How many cylinders are misfiring ? Check engine light on ? What code or codes are stored ? Mass air flow sensor ! . Finding out what cylinder or cylinders are misfiring would be the thing to check , unless you already have . Could also be a injector not firing . Videos for testing these thing's are on youtube !

Mar 06, 2017 | Pontiac Cars & Trucks

1 Answer

Why I failed emmissions test 3 times


what is your question?
I failed emmissions test once too, and it turned out to be a bad gas cap!!! $30 for a new one.. Yes, it was a Kia too.. Sephia.

Aug 27, 2014 | 2003 Kia Sedona

1 Answer

1994 chevy s-10 6 cyl 4.3l automatic starts and runs rough till it gets warmed up?


ALL SENSORS GO BACK TO THE ECM(COMPUTER), THE OXYGEN SENSOR IS EXTREMELY IMPORTANT, TELLS COMPUTER CHANGE OR ADJUST FUEL DELIVERY, AMONG OTHER THINGS, FIX THAT PROBLEM, PROPERLY, THEN U CAN MOVE ON. NEW AIR AND FUEL FILTERS FOR SURE ! IS BATTERY FULLY CHARGED ? THE GAS WE BUY IS GARBAGE, ETHENOL IS KILLING OUR ENGINES, ADD SOME PREMIUM FUEL, NEXT FILLUP, ADD STABIL 360 FUEL STABILIZER TO TANK, ARE YUR SPARK PLUGS AND WIRES IN GOOD CONDITION ? TUNE-UPS DO HELP. FUEL INJECTORS IF THATS WHAT U HAVE, GET DIRTY, CLOGGED, NEED CLEANER ADDED TO TANK, OIL CHANGE ALSO HELPS, GOTTA GET ENGINE RIGHT, AS U WOULD FOR INSPECTION. OR YOU'LL FAIL EMMISSIONS TEST, RIGHT ? GOOD LUCK MY FRIEND

Apr 29, 2014 | 1994 Chevrolet S-10

1 Answer

Failed emmissions codes 0400-0443-0300


P0300 Random Misfire, means any cylinder at anytime.

P0400 Exhaust Gas Recirculation Flow. EGR passages are full of carbon
clean passages and misfires may go away

P0443 Evaporative Emission Purge Control Valve circuit.

now just because a code is present doesn't mean a part/sensor is bad, just where to look and to test.

Oct 10, 2012 | 2001 Nissan Maxima

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

3 Answers

I have a 1997 Bravada that has a bad oxygen censor and a bad caytalytic converter. Would both of these problems cause a misfire, and , wich sensor is in bank 2


Yes they can surely cause an misfire.

I cannot understand your statement "wich sensor is in bank 2"

If i am not wrong you are asking which sensor is present in bank 2 .

The 4th O2 sensor is located in bank 2

Mar 22, 2011 | 1997 Oldsmobile Bravada

3 Answers

I have a 97 Ford Explorer AWD 8 cylinder. Check engine light comes on and I get code p303. Vehicle bucks at times, uses lots of gas. Believe it may be 02 censor, spark plugs and wires tested ok. Any Idea


code says #3 cylinder misfire, check the coil pack for this cylinder to see if its got spark, bad o2 sensor will spit another code, its most likely the coil

Mar 17, 2011 | 1997 Ford Explorer AWD

1 Answer

Car passes emmission test but fails due to codes in computer


ok code 0300 is a random multiple cylinder misfire. probably ignition related is my guess. i would check the coil pack and ignition module and go from there.

Mar 16, 2009 | 1996 Chevrolet Cavalier

1 Answer

O2 sensor 1996 volvo fail emission test


If you have trouble codes stored in your cars computer for O2 sensors a fuse will not fix it. One or all of the O2's may need to be replaced. There are test that can be done to confirm which one.

Jan 28, 2009 | 1996 Volvo 850

1 Answer

FAILED EMMISSIONS


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

Aug 28, 2008 | 1998 Nissan 200SX

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