ML63 Random Misfire all cylinders
07-09-2021, 03:37 AM
#1
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ML63 Random Misfire all cylinders
My 2007 ML63 is down with random misfire code code P0300, other codes include:
P0191- fuel rail pressure sensor circuit range/ performance
P0304-cylinder 4 misfire
P0301-cylinder 1 misfire
P0302-cylinder 2 misfire
P0307-cylinder 7 misfire
Basically there are misfire codes for all cylinders
there is a code P0661 not sure what its for..
I also noticed when i start the car it shakes terribly and the driver side exhaust blows out cold air only (Right hand drive).
I have since changed the spark plugs, swapped out the coils, even checked the timing of the cams and still get the misfires..
anyone to point me in the right direction
P0191- fuel rail pressure sensor circuit range/ performance
P0304-cylinder 4 misfire
P0301-cylinder 1 misfire
P0302-cylinder 2 misfire
P0307-cylinder 7 misfire
Basically there are misfire codes for all cylinders
there is a code P0661 not sure what its for..
I also noticed when i start the car it shakes terribly and the driver side exhaust blows out cold air only (Right hand drive).
I have since changed the spark plugs, swapped out the coils, even checked the timing of the cams and still get the misfires..
anyone to point me in the right direction
07-17-2021, 01:21 PM
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07-17-2021, 05:03 PM
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Google translated it inaccurately. Better Inspection catalysts and oxygen sensor.You need to better diagnose the best Star Das Xentry. I had a similar problem with the ML 55 - the catalytic converter was clogged - it was visible at the morning start - each exhaust smoked differently. I changed the same things as you. Unnecessarily. When I solved the catalytic converter, I tried to reassemble them and everything worked. The S63 had a problem with the oxygen sensor. I don't know which one anymore. There are 2 / on each side, 4 in total / one is in front of the catalyst and the other behind. The sensor wasn't dead just went crazy - crazy values and the engine worked accordingly.
07-19-2021, 04:21 PM
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Google translated it inaccurately. Better Inspection catalysts and oxygen sensor.You need to better diagnose the best Star Das Xentry. I had a similar problem with the ML 55 - the catalytic converter was clogged - it was visible at the morning start - each exhaust smoked differently. I changed the same things as you. Unnecessarily. When I solved the catalytic converter, I tried to reassemble them and everything worked. The S63 had a problem with the oxygen sensor. I don't know which one anymore. There are 2 / on each side, 4 in total / one is in front of the catalyst and the other behind. The sensor wasn't dead just went crazy - crazy values and the engine worked accordingly.
07-20-2021, 07:08 AM
#6
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hai, my scanner showed a bad o2 sensor,,, where did you buy your o2 sensor?
I bought it in an online store where I buy spare parts. But realize that I do not live in the USA, but in Europe in the Czech Republic. If you want a link, I'll send it to you, but it probably won't be convenient - I don't know.
Remember, the O2 sensors are 2 for each exhaust, ie 4 together. Beware they are not the same. In front of the catalyst they are regulating and behind the catalyst they are diagnostic.
I'm always looking by VIN
The price for the O2 sensor in our country is from 50 to 100 $ Bosch brand. How much does it cost in the US?
