Question about 1998 Dodge Neon

2 Answers

P0300 P0301 P0302 P0303 P0304

Plugs are new , wires are new , Engine light still comes on with P0300 P0301 P0302 P0303 P0304

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  • critch21
    critch21 May 06, 2012

    Yes, I cleared the codes twice and the codes came back after the plugs and wires were changed.

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Hi friend ,maybe this PDF can help you to solve the problem, Diagnostic Trouble Code Table ,hope can help you .

Posted on May 21, 2014

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  • Master
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Have you had somebody clear the codes after you installed the parts.If not the codes have to be erased by using a scan tool.

Posted on May 05, 2012

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5 Suggested Answers

Anonymous

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SOURCE: Engine light comes on - Code shows P0300 and then

OBD II 300 Random/Multiple Cylinder Misfire Detected

When the misfire monitor detects a misfire, it will trigger the check engine light with the specific cylinder number as the last digit in the P030X code. For instance cylinder 1 misfire is P0301, cylinder 2 is P0302 etc. In this case we have either multiple cylinders misfiring, or the computer simply can't determine the specific cylinder, and as such we are left with the P0300 in computer memory.

Possible Causes:

Fuel injectors, related wiring, sensors and computer issues
Running out of gas, or poor fuel quality
Evaporative emissions system (EVAP) concerns: fuel vapors leaking into engine
Incorrect Fuel Pressure
EGR system concerns: leaking EGR valve or restricted ports
Base engine concerns: low compression, valve train problems and timing issues
Ignition system concerns including, but not limited to:
Faulty spark plugs
Faulty coil or related wiring
Ignition module or related wiring issues
Ignition related sensor faults or wiring issues

Posted on Apr 05, 2009

Anonymous

  • 9 Answers

SOURCE: 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..

Posted on Feb 20, 2009

rockitman187

Randy Hough

  • 2559 Answers

SOURCE: 2000 dakota 4.7 v-8 codes p0300 p0303 p0304 p0307

Catalytic converters on the Dakota's were a recall issue from 1999-2003 models.
I had a 99 and a 2001 and had the same problem on both.(3 times on the 99 and once on the 01)
You should also check the speed sensor on the rear axle.
The neutral safety switch and the EGR valve.

If I were you,I would start with the Cat and EGR,then check the other stuff if you still have issues.




Please rate this a fixya

Posted on Feb 11, 2009

emissionwiz

Marvin

  • 85223 Answers

SOURCE: P0132 code along with P0300, P0301, P0302, etc.

check for intake manifold for vacuum leaks, use a can of spray carb cleaner and spray around the top of the engine, if you hit a leak the engine idle will change, P0302 is a miss in #2 cylinder (cylinder power output low, lean cylinder due to poss vacuum leak and other issues.). once again an O2 will not cuase a mis-fire.

Posted on Mar 17, 2009

Dennis Yachimec

  • 79 Answers

SOURCE: 06 Dodge 1500 V8 4.7L: Overheating, Engine Light

Hi
Check for plugged exhaust system. If plugged will cause overheating and misfiring of all cylinders.

Posted on Apr 09, 2009

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I am having trouble with my speedometer not working occasionally and now my seat belt light is coming on sometimes too. Is this the instrument panel cluster? Or something else? 1998 Dodge Neon. Backstory is as follows: -We take very good care of it and have one dedicated mechanic. -It has only had two owners; my parents and I. -We replaced the battery 2 months ago. -Mechanic checked to make sure the speedometer sensor was working. -We have had issues with the radio for years where it will randomly turn on and off, typically brought on by a stuffed trunk OR wet weather. -The speedometer works until we hit a bump and then the needle flies up and down or sometimes just stops working all together. -Mechanic has made mention of there being some Chrysler specific battery cable that is a smaller side cable and it is not in good condition. -Currently, my problem is that I can't find an old 1998 Dodge Neon in the salvage yard because yards are doing a lot of 2002 and newer vehicles and automatically crushing the others. The meat and potatoes of my question is what direction do I go in? And what of these symptoms ties to each other? And will adding new solder to the points on the panel fix it or is it something else? I'm trying to find least expensive to most expensive options and I'm rather handy but can't drop an engine or transmission or anything so keep this in mind. My handiness ends at resoldering the pins BUT I do have a mechanic I trust, but I fear that maybe I'm not combining symptoms properly. I have the money to repair an item I KNOW is wrong but not to chicken hunt around for problems.

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