1997 E320 Misfire p0300 p0303 p0304
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ml350
1997 E320 Misfire p0300 p0303 p0304
Car has not been driven for at least 6 months, took it out the other day and engine stated to misfire and have codes p0300, p0303 and p0304.
Engine does not misfire right away but only after running for a few minutes and then misfire occurs.
Replaced all plugs, swapped coils, changed fuel filter, disconnect airflow sensor and does not make a difference. When problem occurs both injectors for cylinders 3 and 4 shut down.
Any ideas???
Engine does not misfire right away but only after running for a few minutes and then misfire occurs.
Replaced all plugs, swapped coils, changed fuel filter, disconnect airflow sensor and does not make a difference. When problem occurs both injectors for cylinders 3 and 4 shut down.
Any ideas???
Last edited by dknox1; Sep 10, 2015 at 03:40 PM. Reason: Spelling Error
MBWorld Fanatic!
Joined: Mar 2014
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From: Northwest Illinois
2014 E350 also restored: 1969 Camaro convertible SS 1957 Chevy Belair 2dr hardtop
Usually means a bad coil on one of the cylinder heads from what I have read. But since you swapped out the coils I have no idea. Hopefully you will find the cause or someone here might know
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Joined: Dec 2015
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From: Los Angeles , Ca
2011 S63 , 1997 SL500 La costa edition (sold) 1987 560SEC (sold)
I'm having the same problem as you (different cylinder 2 and 8 ) done the same things you're done , (plugs, filter MAF cleaning) still have the codes and bad idle and misfire code after a minute or two from startup , have you resolved your issue yet? thanks
