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Hi all, I have an issue with my 95 E320. A few months ago I replaced the infamous wiring harness. Before that the car was running rough and the CE light was on. After the change the car still runs rough, and has slow acceleration. I replaced the O2 sensor with a generic one and I temporarily removed the CAT to see if it was blocked. The CAT was not blocked at the front or back ends. I still have the CE light and the onboard diag. unit flashes 7 times. Has anyone experienced this condition and found the fix?
 

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This issue has cropped many, many times. The problem is most likely the electronic throttle body. It suffers from the same wiring issues as the engine wiring harness.

Did you use a new engine harness, buy a used compatible one or rewire your old one???
 

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Code 7 is ignition system faulty. You need to build the code reader and read the codes on the other pins, especially pin 8.
 
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