Question about 2000 Mitsubishi Galant
If your car has direct injection this can be a nozzle
problem and they have to be clean
And adjust or change. Please make these checks first .
Take of the air hose and look at the air flow meter it is sensitive to dirt and often courses
Problem at low RPM just wipe it clean if it is the one that looks like feather be careful
Do not damage it. Next take of the distribution cap and look for cracks around studs
And also check the rotor for cracks ,these cracks courses the spark shot to ground
And therefore misfire. Next check battery voltage at low RPM maybe you are running your car with daylight and the voltage drop is to much, somewhere around 11.6 volts
The ECU starts be effected you should get a least 12.8 at idle 14v at full RPM
If your car has a mechanical fuel pump this problem is very likely bad pump or
Fuel filter you find these items behind the motor just change fuel filter it is tube
Filter. Look for engine oil leakage from fuel pump that’s a sure indication of
Faulty pump. Finally make sure you have been sold right type of sparkplugs
Last time this can be indication of to cold sparkplugs .
Posted on Jul 13, 2008
My issue after 15 months of this and 2 Mits. dealerships several times and a couple of other shops, I found Woody's Auto Service in my town and they found it right away. For my car it was the evaporator solenoid. What do you know, such a simple fix, and much less expensive than all the other repairs done that supposedly fixed the problem. They listened to me and my car and even rode with me to the gas station and experienced my issues which were always worse just after filling up with gas. I will never go to the dealership again...Woody's is the place for me!
Posted on Apr 09, 2009
Change both of the o2 Sensors and the mass air flow sensor this fixed my problem on a 2000 galant.. These three things can cause major problems....
Posted on Nov 05, 2008
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Posted on Jan 02, 2017
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Oct 03, 2011 | 2004 Chevrolet Malibu
A P0300 diagnostic code indicates a "random" or "multiple" misfire.
Unfortunately, P0300 doesn't tell you specifically which cylinders are mis-firing, nor why (code P0301 would indicate cylinder #1; P0302 would indicate cylinder # 2 etc). This means there could be an issue with any number of components/circuits relating to the ignition/combustion circuits.
I would recommend you check for the following:
Sometimes the underlying cause of a random misfire is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold, unmetered air getting past the airflow sensor, or even an EGR valve which is stuck open.
Hope this helps...
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P0300....Random/Multiple Cylinder Misfire Detected
so its got a misfire and quickest way out here to avoid a expensive garage visit is to change plugs and Ht leads and see what happens ,HT leads is proper english for fire wires by the way ,see iam learning american ---slowly---
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