Best Answer

i had same problem too. i cleaned egr valve and egr exhaust pipe. it worked fine after that. intake manifold gasket ( I think its called the Intake main gasket on this car) ususlly culprit apparently on this paticular vahicle.

If the gasket doesn't clear the code try this: I recently cleared my p0300 code. It was the spark plugs, incorrectly gapped by the shop! I actually replaced them again and set the gaps myself with 'iridium' spec plugs. Densos are the preferred choice but I used the Autolite Extreme Performance Iridium plugs. I had been carrying the fault for over a year yet the engine seemed to be running great. The PCM seems to be very sensitive to misfires. It made a difference that I wasn't aware of and the engine runs more smoothly too. Basically the best spark possible at the plug to reduce the possibility of a misfire when it matters most. Hope it helps

User Avatar

Wiki User

โˆ™ 2009-07-06 04:04:15
This answer is:
User Avatar
Study guides
See all Study Guides
Create a Study Guide
More answers
User Avatar

Wiki User

โˆ™ 2014-12-18 17:47:13

P0300 Diagnostic Code - Random Misfire

Engine may stumble or miss
Engine may be hard to start
you may notice no issues

Failing spark plugs or spark plug wires
Bad coil or coil pack
Failing oxygen sensor(s)
Bad fuel injector or more than one
Stuck exhaust valve
Bad catalytic converter
EGR valve or valve passage clogging
Bad camshaft position sensor
Bad PCM or ECM

The Fix
Best first action is a tune up, new plugs, wires, inspect all hoses and wire connections then reset the code. If it returns you will need to narrow it down to a system, coils and coil packs should be tested, catalytic converters for function ( do you smell rotten eggs?). A misfire that jumps cylinders could indicate a lean condition, do you have any other codes along with the 300? this will help clue you in to the source, check valve function to make sure they are opening and closing fully.
This is probably pone of the most difficult codes to troubleshoot, so start with the basics and work your way into the more expensive options, in many cases a good old tune up solves the problem, back it up with a fuel system cleaning and see where you stand.

User Avatar

Add your answer:

Earn +20 pts
Q: The P0300 engine code in your 2000 Isuzu rodeo will not go off it says random multiple cylinders misfiring how can you fix this problem Thanks?
Write your answer...
Related questions

Can someone help me Identify the rock layers from oldest to youngest, Thanks!?

This is the problem,Thanks!

What are some things to say after thanks for asking?

no problem

What are the multiple of 6?

the multiple of 6 are 6 12 18 24 30 36 42 48 54 60 thanks for checking my answer

91 JDM CRX running on 3 cylinders help?

I have already checked and it is not the distributor cap, spark plugs or wires. The car was running fine last night and was on 3 cylinders this morning. Any information would help. Thanks!

Why is the gay boy problem and how can i help you?

There's no problem with my gay boy, thanks. I'll have some extra fries with that.

How do you correct a surge problem when auto is cold?

EGR, Thanks {R}

Can you use 2007 pistons and cylinders on 2006 harley both are E-glides but my 06 is an 88 and the 07 is a 96?

No you cant, but thanks for all the input.

What is your view on having a fast paced job with multiple demands?

No thanks. I'm retired. You do it if you wish.

The answer in a subtraction problem is called the remainder?

No, it is really called the Difference. Thanks for asking!

What are the problem related to human sexuality?

fregnancy deducted thanks :-)

What literary devices are used in this passage such were the new surroundings in which?

this is not the answer to this problem thanks though

You don't know what to do?

You will have to tell us a bit more about your problem before we can give you an answer. Please post below and explain your problem. Thanks

What can you say after someone says thanks?

You're welcome, no problem, anytime, happy to help etc.

how do u rewrite the problem 4.2 divided by 23.1 so that the divisor is a whole number thanks ! >anah?


How should you reply when someone says thanks?

smile politely and say 'your very welcome' or 'no problem' :)

What is the problem with my 1990 ford 7 3 diesel it will not start Batteries are good but horn lights or radio will not work either Thanks?

I checked again and found a broke cable. Thanks

What is the answer to the rebus thanks thanks thanks thanks thanks?

Many Thanks

How would you describe your relationship with an office colleague?

We need more information from you in order to help you with your problem. Thanks

Free download user manual accent verna?

Yes Please, I Have a problem in my car an no body answer me. Thanks

Chapter 23 Problem 23-04 Build a Model?

Can someone give me a out line answer on this? Thanks a bunch!

Why does my Mazda tribute 2003 dash brake light stay on?

please answer this question - i have the same problem! Thanks

What are the Problems in hunchback of Notre Dame?

Besides from Quasimodo's isolation from what I read, what else is the problem? And the solution? Thanks.

What is the solution to the rebus thanks thanks thanks thanks thanks?

"Many thanks." Many Thanks It is not many thanks. It is "Thanks a lot"

Do black hornets build nests?

Yes. There are multiple images on google of Hornets nests. Thanks for using!

Looking for cassette tape or CD containing multiple Dr Science monologues?

Not really, but thanks for asking!