Question about 2004 Isuzu Rodeo

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P0300 and P0303 misfire codes 2004 Isuzu Rodeo 3.5L

I Have a 04 Rodeo with a 3.5L engine. I have a P0300 and a P0303 misfire code. Things I did to try to resolve the issue. I switched cylinder 3 to cylinder 4. Also cleaned spark plugs. They had a black carbon on it. Plugs were changed. Still getting the same codes. Switched all the coils on the left side back and forth. Still the same code. Every time I took the spark plugs out there would be carbon build up on it. I would clean it every time. The same codes would pop up every time. Even deleted the codes every time. That's the only codes I get. Even put Chevron injector cleaner in and did not help. Any Ideas?

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  • Isuzu Master
  • 450 Answers

So missfire detected and cylinder 3 missfire detected.
check to see injector pulse with "noide light" if ok injector is problem
remove fuel rail and injectors look into top of injector for blockage in screen filter in injector if blocked clean out or injector carby places can remove this screen replace it and test injectors and clean or just buy new injectors. make sure to clean out fuel rail and change fuel filter also.
if noide light flashes irratic or not at all wiring issue, check for power on one wire with ignition on 12v other is earthed by ecu when opened to inject fuel. other thing that can cause problem on cylinder is tappet clearance "shims" too tight, could do compression test to see if compression is low on cylinder or a cylinder leakage test to see if valves are leaking. broken valve spring. valves do not hit piston on these engines even if cam belt breaks, they are a "free wheeling" engine

Posted on Oct 03, 2013

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Posted on Jan 02, 2017

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linhnguyennn
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SOURCE: 97 isuzu hombre cylinder 2 misfire

1998 isuzu rodeo wont start no spark,no injector pulse

Posted on Jan 24, 2009

stevenhurc
  • 450 Answers

SOURCE: engine light was on and engine idles rough.

these O2 sensors are cat convertor check sensors. id be checking cat convertors and hopefully you should try replacing if not all ready is the front bank 2, O2 sensor
if you have scanner can you see fuel trims in data display to confirm high fuel trim only on bank 2 either +-5 or more indicates problem and if bank 2 sensor 2 has fixed high 700mv reading cat no good(warm idling)

Posted on Jul 10, 2009

honeymokey
  • 3113 Answers

SOURCE: 2004 Isuzu Rodeo 3.5ltr 4X4 hesitation/misfire acceleration

The upper intake gaskets may be leaking. They are made of plastic and metal and will leak air. Do not remove the cover on very top of manifold when changing.

Posted on Jul 24, 2009

  • 36 Answers

SOURCE: 2001 Isuzu Rodeo 4WD. CHeck Engine light on and

After market spark plugs could be the problem.
Reinstall the old plugs and see if that fixes it.
This vehicle has an ion sensing ignition system and is real sensitive to the proper spark plugs. I would get the proper plugs from the dealer if the old ones work.
The codes P1311 and P1312 are ion sensing codes.

Posted on Oct 19, 2009

  • 880 Answers

SOURCE: 1997 Isuzu Rodeo 3.2 L - misfire on cylinder

I would check for a bad plug wire next and then a compresson test on #5 cylinder.

Posted on Jul 16, 2010

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Check engine light came on ....error code detected po300 random misfire detected... 2013 forester with 35,000 mile on it....what should be my next step?


check plugs and coils --also possible bad fuel ---try reset code to see if it comes back --the following link can also assist with p0300
SUBARU FORESTER ENGINE CODE P0301 P0303 also their is an old forum thread about the misfire and possible about an update for vehicle to correct problem didnt see any thing about update but you can check with a dealer about it
P0300 P0300

Jul 08, 2017 | Cars & Trucks

1 Answer

P0303 cylinder misfire


For engine misfiring problem check the help links mentioned below. Click the link below to go through the troubleshooting procedure :---- OBD-II Trouble Code P0300? http://schematicsdiagram.blogspot.com/2011/12/obd-ii-trouble-code-p0300.html
---------Car misfires and error code P0306 and P0303 is shown? http://technoanswers.blogspot.com/2012/01/car-misfires-and-error-code-p0306-and.html
-----------
Engine misses and truck jumps? Hard to down shift? Issue with high gear only? http://technoanswers.blogspot.in/2012/02/engine-miss-and-truck-jumps-hard-to.html

-----------
Bad miss at idle?

http://technoanswers.blogspot.com/2012/01/bad-miss-at-idle.html

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While stop engine idles like cylinder missing?

http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

------------
Engine Misfire codes for car?

http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html
Engine Misfire codes?

http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html

--------------
Misfire on cylinder 4?

http://schematicsdiagram.blogspot.com/2011/12/misfire-on-cylinder-4.html

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Oil on spark plugs and car misfires?

http://technoanswers.blogspot.in/2012/02/oil-on-spark-plugs-and-car-misfires.html

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This will help.

Thanks.

Jan 23, 2012 | 1999 Subaru Legacy

1 Answer

I keep getting to trouble codes in the computer on my Isuzu Rodeo. P300 and P1627


P0300 - Engine misfire detected
P1627 - PCM analogue to digital conversion malfunction.
These 2 often come up together when theres a problem with the fuel level sensor. The sensor sits underneath the filter. Remove its connector. Resistance shold be 80-180ohm. You may also notice weird readings from your fuel guage.

Aug 05, 2010 | 2000 Isuzu Rodeo

2 Answers

CODES P0300 P0303


These codes are codes regarding failure. The code P0300 means repeated Engine Misfiring. The code P0303 means Repeated Misfiring of Cylinder Number 3. Kindly contact a technician to get both checked. Their Heads must have been misplaced or broken due to misfiring.
Thank you sir, Have a nice day.

Sep 26, 2009 | 2002 Dodge Neon

2 Answers

Check engine light on,running rough and stalling.


means you have multiple misfires (po300) the other codes are lean codes, possiable tune up , bad injector, fuel pump,

May 07, 2009 | 2001 Isuzu Rodeo

2 Answers

Obd codes p0300 p0301 p0303 p0305 p0401


P0401 Exhaust Gas Recirculation Insufficient Flow Detected

P0300 Random/Multiple Cylinder Misfire Detected
P0301 Cylinder 1 Misfire Detected
P0303 Cylinder 3 Misfire Detected
P0305 Cylinder 5 Misfire Detected


I would check out the EGR valve. That maybe what is causing all the misfires.

Mar 24, 2009 | 1997 Toyota Camry

1 Answer

2000 dakota 4.7 v-8 codes p0300 p0303 p0304 p0307


well the codes
p0300 multiple misfire
p0303 misfire cylinder 3
p0304 misfire cylinder 4
p0307 misfire cylinder 7

can be alot of things check cylinders for compression is what i would do first..

Jan 31, 2009 | 1997 Dodge Dakota

1 Answer

2000 Honda (Isuzu Rodeo) Check Engine Light ? 4 Codes, Misfire/Throttle/EVAP ?


Hi Jack,

I am not an expert and I don't have the codes in front of me with the meaning but I can offer some advice and hopefully it will solve your problem. First keep the print out of the codes and take it/them with you. Have someone check the oxygen sensor. It's possible that all of the codes you are getting lead up to the computer (electrical issue). I sure hope this helps. Good luck and let me know how things turn out.

Oct 17, 2008 | 2000 Isuzu Rodeo

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