misfire code
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ok,have to start somewhere,gonna take the car in today for an oil change
thank you for your time and help.im much grateful.
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I ordered a new one today from the dealer......thank you for that info
should have it in a few days!!!!!!!!!!!!!!!!!!
Last edited by nolanjr; May 10, 2014 at 12:39 AM. Reason: misspelling
Correct the code issue and the engine with smooth out...doubt the oil had anything to do with change in engine.
Correct the code issue and the engine with smooth out...doubt the oil had anything to do with change in engine.[
confused,naaaahhhhh.i KNOW THE OIL HAS NOTHING TO DO WITH THE CODES.just saying I changed the oil.
picked up the MAF this afternoon and I will put it on sometime tomorrow.




However, be aware that if you're due for a state inspection, you will fail the OBDII part, because there are are a bunch of sensors that need to change to 'ready' status. They will automatically reset, after driving a couple of hundred miles.
You mentioned that when you changed the oil, the filter fell apart. Had the previous owner used the cheap paper type or the premium fleece type (e.g. only use the better, stronger fleece filter type cartridge your car came with when new)?
However, be aware that if you're due for a state inspection, you will fail the OBDII part, because there are are a bunch of sensors that need to change to 'ready' status. They will automatically reset, after driving a couple of hundred miles.
You mentioned that when you changed the oil, the filter fell apart. Had the previous owner used the cheap paper type or the premium fleece type (e.g. only use the better, stronger fleece filter type cartridge your car came with when new)?
hello,it was the fleece type filter,i have never seen a filter that bad,i don't think the oil was ever changed,it was very nasty,gonna go out and change the maf in just a few minutes,i will let ya know how it went.
replaced the MAF now im getting 0300 and 0304 codes




If the car is running OK, why not see if after 3 cold restarts, the CEL turns off?
Possibily after changing some coils/wires and MAF, you're still getting error codes because the previous code conditions have not been properly cleared (e.g. still stored). I know the MB STAR Diagnostic System can clear them, some generic hand readers might, or might not.
However, as mentioned above, any of the the dozen or so system sensors, used to detect/sense faults, must change from 'not ready' to 'ready'. If all is now well, after 200+ miles of driving, the 'not ready' sensors will automatically reset to 'ready'.
If not, unfortunately, misfires can be due to many conditions, having to do with proper air/fuel ratio, adaptions.......for example:
* intake leaks
* clogged fuel filter
* spark plugs (e.g. saw that you changed a couple of coils and wires, but didn't see that you changed the plugs)
* faulty oxygen sensor(s)
* faulty fuel injector(s)
* faulty catalytic converter(s)
* stuck/blocked EGR valve / passages
* burned exhaust valve
Hopefully, you can reach the prior owner to find out what maintenance service(s) have been previously done.
Last edited by Serndipity; May 11, 2014 at 05:27 PM.





If the car is running OK, why not see if after 3 cold restarts, the CEL turns off?
Possibily after changing some coils/wires and MAF, you're still getting error codes because the previous code conditions have not been properly cleared (e.g. still stored). I know the MB STAR Diagnostic System can clear them, some generic hand readers might, or might not.
However, as mentioned above, any of the the dozen or so system sensors, used to detect/sense faults, must change from 'not ready' to 'ready'. If all is now well, after 200+ miles of driving, the 'not ready' sensors will automatically reset to 'ready'.
If not, unfortunately, misfires can be due to many conditions, having to do with proper air/fuel ratio, adaptions.......for example:
* intake leaks
* clogged fuel filter
* spark plugs (e.g. saw that you changed a couple of coils and wires, but didn't see that you changed the plugs)
* faulty oxygen sensor(s)
* faulty fuel injector(s)
* faulty catalytic converter(s)
* stuck/blocked EGR valve / passages
* burned exhaust valve
Hopefully, you can reach the prior owner to find out what maintenance service(s) have been previously done.
is it possible that the new MAF is faulty???????????????








I see no harm in changing the oil regardless as you now know what the service interval is.
The paper element filter is good for about 5k miles. For those seeking the death penalty for engine and stretching it to 10k miles, a fleece element filter is required it is recommended for synthetic oil anyway.
The misfire is covered good here by strong members, other thoughts would be a compression test. A good cylinder is at least 100 psi. The other test is for fuel injector nozzle firing or leaking air. (several ways to test)
Wiring to cam and crank sensors might give symptoms as well.
All the Best, Gator
I see no harm in changing the oil regardless as you now know what the service interval is.
The paper element filter is good for about 5k miles. For those seeking the death penalty for engine and stretching it to 10k miles, a fleece element filter is required it is recommended for synthetic oil anyway.
The misfire is covered good here by strong members, other thoughts would be a compression test. A good cylinder is at least 100 psi. The other test is for fuel injector nozzle firing or leaking air. (several ways to test)
Wiring to cam and crank sensors might give symptoms as well.
All the Best, Gator
Last edited by nolanjr; May 21, 2014 at 02:09 PM. Reason: spelling


