Question about 2001 Mitsubishi Galant

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2001 mitsubishi galant misfire cyl 1 and code says o2 sensor but this is probably due to misfire. Is there a common problem with 2001 mits cylinder misfire? I'm about to pull the intake manifold to change plugs and wires but this is a lot of work if it doesn't fix the problem and i have to pull the intake again to try and resolve this issue. Any pointers would be appreciated

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  • Mitsubishi Master
  • 615 Answers

Check moter and switch wichever is bad replace

Posted on Nov 26, 2010

  • tlbodiford Nov 26, 2010

    Which motor? What switch?

  • Ken Long
    Ken Long Nov 27, 2010

    sorry this answer was for a car problem listed below yours (A different car) sorry

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1 Answer

Check engine light code p2196,p2197, po300 ,304,305,306,p2 ,Im freeking out.


P0300 Random/Multiple Cylinder Misfire Detected P0301 Cylinder 1 Misfire Detected P0302 Cylinder 2 Misfire Detected P0303 Cylinder 3 Misfire Detected P0304 Cylinder 4 Misfire Detected P0305 Cylinder 5 Misfire Detected P0306 Cylinder 6 Misfire Detected P0307 Cylinder 7 Misfire Detected P0308 Cylinder 8 Misfire Detected P0309 Cylinder 9 Misfire Detected P0310 Cylinder 10 Misfire Detected P0311 Cylinder 11 Misfire Detected P0312 Cylinder 12 Misfire Detected P0313 Misfire Detected with Low Fuel P0314 Single Cylinder Misfire (Cylinder not Specified) P0315 Crankshaft Position System Variation Not Learned P0316 Misfire Detected On Startup (First 1000 Revolutions)

Read more at: http://www.obd-codes.com/trouble_codes/
Copyright © OBD-Codes.com
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P2195 O2 Sensor Signal Stuck Lean Bank1 Sensor 1 P2196 O2 Sensor Signal Stuck Rich Bank1 Sensor 1 P2197 O2 Sensor Signal Stuck Lean Bank2 Sensor 1 P2198 O2 Sensor Signal Stuck Rich Bank2 Sensor 1

Read more at: http://www.obd-codes.com/trouble_codes/
Copyright © OBD-Codes.com http://www.obd-codes.com/p0002

May 07, 2015 | 2006 Ford Taurus SEL

1 Answer

2005 5.3 1500 pickup multi cylinder misfar replaced intake gasket,coil,injector,and plug in cylinder 1&3 number 1 is missing the most also replaced oxygen sencer bank 1


Just so I learn something

Spark plugs -wear ,seldom misfire

Injectors and Coils-need to be component
tested,before I would replace

Testing-- is using a meter,oscilloscope,etc.

Same on O2 Sensor,scope is only way to
see switching time.

I would suggest something common to
multi cyl misfires.
Because you get a code for #1,doesn't mean
that coil is bad. You may have to walk a new
coil from one cyl to the next.

CPS Sensor ?
Is there a cam sensor on that engine?

Feb 09, 2011 | 2005 Chevrolet Silverado

1 Answer

02 sensor p0136 and cylinder misfire p0300


Most likely you do not have bad O2 sensor or coil sience you have P0300 code.
Check for vacuum leaks first , this is very common problem(vacuum leak) , lean mixture will cause misfire. I'm tallking about V6 engine , 4cyl have same problems but for misfire it may have bad coil (they under recall now).
Also check condition of air mass sensor , if it's dirty ,
buy air flow sensor cleaner and clean it according to user manual on the can.(air mass sensor can cause
O2 sensor code)
Check vacuum hose to fuel pressure regulator.
There are many more things to check , but that for mechanic shops after you try this.

Jun 10, 2010 | 2001 Audi A4

2 Answers

What are codes p0307 and p0138 on dodge ram 2500 mean


P0138 (M). O2 Sensor Circuit High Voltage (Bank 1 Sensor 2) ..... P0307 (M). Cylinder # 7 Misfire. Misfire detected in Cylinder # 7.

Mar 19, 2010 | 2001 Dodge Ram 2500 Truck

1 Answer

2001 mitsu galant V6, misfire in #1cylinder


check fuel injectors, fuel pressure regulator, air filter. cat converter, O2 sensor. failure of any of these wastes fuel. air/fuel ratio should be normal.

Oct 04, 2009 | 2001 Mitsubishi Galant

1 Answer

Used seafoam in oil engine misfiring


determine when it misfires, and isolate cylinders. a poormans method is use an infrared temperature gun (one with high range, 700 degrees or more is preferable) and with engine held at rev(say 2500) point at each exhaust port 1 by 1, misfiring holes have colder exhaust than firing holes.
If the misfire is momentary or intermittant, or caused by defective cam or crank sensors, you should see professional help...those problems require more advanced equipment to get the 1st time, unless you dont mind lobbing expensive parts randomly till you get lucky

Sep 12, 2009 | 1999 Mitsubishi Montero Sport

2 Answers

2005 gallant with O2 sensor engine light is one...how do I fix it?


have the engine light code scanned, and it'll tell you if it's bank 1 sensor 1, bank 1 sensor 2, bank 2 sensor 1, bank 2 sensor 4.

Bank 1 is on the same side as Cylinder 1
Bank 2 is on the opposite side of Cylinder 1

Sensor 1 is located before the catalytic converter.
Sensor 2 is located after the catalytic converter

Sep 11, 2009 | 2001 Mitsubishi Galant

1 Answer

2001 mitsubishi galant,2.4L eng. Getting DTC 421. Is this code related to the catalytic converter? Check eng. light always on, also DTC 302 showing.


DTC code P0421 is the O2 sensor that indicates a an issue with the Catalytic Converter. Replace the O2 sensor to the Catalytic Converter "the one after Converter" It's common for the sensor to fail and you can pick one up from Auto Zone and they will have the step by step instructions to replacing the O2 sensor. 
DTC code P0302 Indicates a misfire on cylinder #2. Address the spark plug, spark plug wire, and injector. Look for any damages and try running some fuel injector cleaner through the fuel system to clean out the injectors. 
Good luck and hope this helps. 

Aug 11, 2009 | 2001 Mitsubishi Galant

3 Answers

Spinning My Wheels!! ---- P0421 Code Mitsubishi Galant


I have the same vehicle, same code P0421, changed the BOTH O2 sensors and the check engine light was still on, took it to my fathers garage and checked the Catalytic Converter, and it was ok later I found out that P0421 means that the vehicle doesn't have the proper mixture of gas and air (running richer) so I changed the MAX air flow sensor and wala the code went away.

Mar 30, 2009 | 2003 Mitsubishi Galant

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