Mercedes S420 Runs bad! - Mercedes-Benz Forum

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post #1 of 2 (permalink) Old 02-08-2011, 03:01 PM Thread Starter
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Post Mercedes S420 Runs bad!

Hi, I have a white 1994 mercedes s420. Recently I have been having a problem so I have parked the car. It will run for about 10-15 minutes perfectly! Then after that it starts to run real rough and bad. It stalls out within a minute of it starting to run bad. No acceleration at all when this happens. Then a bad smell starts to be noticeable. I have replaced the engine wiring harness. It needed one regardless even if it wasn't going to fix my problem. It seems to have helped a little bit. I borrowed an ezl and that is not my problem. I don't know what else to do to fix it so if anyone can help me that would be great. Thanks

Last edited by thekookoothe; 02-08-2011 at 03:03 PM. Reason: to fix title
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post #2 of 2 (permalink) Old 02-08-2011, 05:40 PM
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