Gassed up one day and the check engine light came on. I re-installed the gas cap and took the negative lead off of the batterey. Problem solved, for a couple of weeks. Wife put gas in the car and the light came on again, and same problem. Thought it was the gas cap. Now when you put a load on the engine ie...heavy accelerator, the light comes on and engine flutters. When you shut the car off and start it again, something resets and the engine runs fine, until you give it a lot of gas. Then the engine starts to flutter. So everytime you shut the car off, something resets and will run fine until you accelerate.

Get the codes checked with any OBDII code reader, or at an Autozone.

You have an intermittant misfire. Once detected by the engine management system the system shuts down the injector on the offending cylinder, making it a continuous misfire. Recycling the key resets the issue until the misfire is detected again.

You should be setting a cylinder specific misfire code P0301 through P306 by cyclinder. I would probably change the coil to plug connections.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician

As SB said..change all 3..

http://catalog.worldpac.com/mercedesshop/sophio/quote.jsp?clientid=catalog.mercedesshop&cookieid=2AO123CS42B90XBXEW&baseurl=http://catalog.peachparts.com/&partner=mercedesshop&year=1997&product=F1010-84561&application=000357362

I would also change the plugs while you are there ..Use Bosch F8DC4 only.
[ cheap, too]

__________________
A Dalton

The codes will verify it your problem, but also check the condition of your wiring harness as well.

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1980 500SE/AMG Euro
1981 500SEL Euro
1982 380SEL
1983 300TD
1983 500SEC/AMG Euro
1984 500SEC
1984 300TD Euro
1986 190E 2.3-16
1986 190E 2.3
1987 300D
1997 C36 AMG
2003 C320T 4matic

past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350

Thanks everybody.