trbo2nr

My 2004 c32 left me on the side of the road. I cannot get the closest MB dealer to pickup...maybe closed. I have my scan tool with me and limited tools. I am getting three codes. P0300, P0301, and P0303. Can anyone look em up? My cell phone is limited. Thanks a bunch! Yeah, I am on the side of the road in Charlottesville, Va.

trbo2nr

MMisfire in cylinder 1 and 3 I am told or catalytic converter. How to fix that?

Lenin

Can you scan tool clear CEL codes? if it can, clear it and start the car again. Worm up it and see if it goes again.

trbo2nr

yes I did that and was able to get a few miles then it started giving the CEL again. I called roadside assistance and they cannot locate me even after giving my location from the navigation... Gonna be a long day.

Lenin

When was the last time you got gas? Was it from the usual place?

trbo2nr

Same place as i always use. I just drove 80 miles and the car was fine. Then I visited a buddy for like an hour, got in the car and drove for a few minutes before the CEL came on.

boohooramblers

1. Is your car modified +/- tuned? If so, list your mods (possibility of running a low AFR and subsequent fouling of cats, etc.).

2. Related to the above, are you running aftermarket air filters such as Green filters? Check for the possibility of oil or otherwise messing up your MAP sensor.

3. Do you hear any rattling from the catalytic converter areas? (possibility of bad cats).

4. Have you checked all plugs and wires to and from the coil packs?

trbo2nr

I do have green filters and modified for a number of years now. No rattling and all stock parts are at home. It feels like coil packs or something is bad but not the MAF. Feels a little different than the MAF. Calling a taxi and found a home to leave the car at until Monday as everything is closed. All looks tight under the hood and the previous 80 miles I drove were fine. The problem surfaced after I turned the car off for an hour and started back to head back home.

JUAN CASAUS

When I got those codes with my C230 it was a bad ignition coil

JUAN CASAUS

Could be O2 sensor too.

trbo2nr

Thanks everyone. How much for either of those jobs?

I am in the comfort of a hotel room and reduced rate until Monday....everything is closed....

Bob

JUAN CASAUS

Either one is an easy diy...is just a couple of bolts and the plug wires but you'll have to take the filter housing off.

trbo2nr

I am heading to the local auto parts place in the morning by taxi......and looking for the Bosch replacement parts. I can't imagine two ignition coils could have gone out but thinking a common part. Car ran fine for the 80 mile trip but once it cooled off and restarted, that's when the problem started. I once heard a mechanic say the scanners just tell the symptom ( in my case the P0300, P0301, and P0303) and thinking if the O2 sensor is really the fault? How long do the O2 sensors last.

JUAN CASAUS

Depends...if you're running rich they'll go out quicker.

trbo2nr

Oh ok. thanks.

thtguy

too bad I moved from C'ville to Tampa 1 1/2 years ago, I coulda been available to help you out.

Best of luck on repairs.

MIKESV8

this really sucks. i can't believe the car just died without warning........... happy new years buddy!!

trbo2nr

Turns out replacing the plugs and wires did the trick.