0301, 0305, 0306, 0300 - 97 S500 Help! - Mercedes-Benz Forum
 
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post #1 of 8 (permalink) Old 12-05-2017, 05:17 PM Thread Starter
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0301, 0305, 0306, 0300 - 97 S500 Help!

I'm getting the following codes on my '97 S500 (w/ 135k miles): P0300, 0301, 0305, 0306 (and an occasional 0410 code).

Today, the car almost left me stranded this morning.. The CEL light started flashing and she almost stalled. There was no power as I pulled off the highway. I let the car sit for several minutes and gave it a start. The engine stumbled for about 10 starts. But after an 11th start, the car drove fine. I was able to make it home.

The same thing happened this afternoon.

I know these are misfires in cylinders 1,5, and 6. I've replaced the spark plugs and moved the coils from 5 and 6 to 3 and 4, but the codes didn't follow.

Since it's a '97, I should have the better wiring harness right?

Any ideas on what's happening? Oh, and I know the 0410 is the air pump error.

Thanks!
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post #2 of 8 (permalink) Old 12-05-2017, 07:45 PM
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I have a faint recollection to an issue like this with codes that won't move from cylinders and it might have been a timing issue.

Hopefully someone else chimes in.
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post #3 of 8 (permalink) Old 12-05-2017, 08:35 PM
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Have you checked the catalytic converter?
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post #4 of 8 (permalink) Old 12-06-2017, 10:05 AM Thread Starter
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The exhaust doesnít smell strange so Iím not sure the cat could be the problem. How else could I check it?
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post #5 of 8 (permalink) Old 12-06-2017, 02:06 PM
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Yes, do check your timing as that what may be.

Martin
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post #6 of 8 (permalink) Old 12-06-2017, 02:10 PM Thread Starter
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I'll have to google how to do that. Does this include taking of the timing chain cover and turning it by hand?

I'm starting to think it could be vacuum related. It only happened once when it was warm outside. Now that the temperatures are in the 30's and 40's, it's happened several times. Same codes - 0305, 0306, 0300.
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post #7 of 8 (permalink) Old 12-07-2017, 08:36 AM
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Sounds like you need to find a good indie and have him take a look.
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post #8 of 8 (permalink) Old 12-07-2017, 07:05 PM
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That's an option

Quote:
Originally Posted by MercedesMikeNAtlanta View Post
I'll have to google how to do that. Does this include taking of the timing chain cover and turning it by hand?

I'm starting to think it could be vacuum related. It only happened once when it was warm outside. Now that the temperatures are in the 30's and 40's, it's happened several times. Same codes - 0305, 0306, 0300.
package 69F, "adaptive cold weather personality."

The close assist on mine came with this option. It "adapts" to time and becomes fully operational around 15-20 years.

Agree, find a good indie to "reset to baseline"

Welcome to the high-personality world of aging Benz ownership
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