Hey! I have a 95 benz s320 that is driving me crazy. Let me give the whole history of the car. The lower harness was fried the car didn't want to start, so i rewired the lower harness and still the car didn't want to start, so i took out the spark plug drop some oil on each cylinder to boost up the compression then the car started right up. And now i am having problem with the car loosing
power when i am driving at high speed on the high way doing like 80 and the car loose power. When i floored the gas pedal the car is not moving. I check the ETA and the wires were fried also, so i sent it to bba to get rebuild i install the ETA thinking that my problem was solved and still the same problem the car keep on misfire, so i took it to a tech shop who only specialize in german cars. He put the car on the computer and he got cylinder 2 and 5 misfire so he told me my problem was the harness and i asked him if he was sure and said yes. We change the harness still the same problem, changed fuel pump and relay, 3 new coils, spark plug and wires, mass airflow sensor, cranshaft sensor, fuel filter, air filter, 02 before the catalytic converter, fuel rail including all the injectors and the car is still loosing power when i drive at high speed and still misfire on cylinder 2 and 5. He said the timing was off a tooth he adjusted it and still the same problem. compression is good, and no leak on the intake. He said the ecu is not good the fact then when the car act up cylinder 2 and 5 as well as injector 2 and 5 don't work. We got another ecu still same problem. When the car loose power when i drive at high speed after 20 miles and come to a complete stop, it stalls. if i restart it the engine shakes like crazy because two cylinder don't work. If i disconnect the battery terminal for a few and plug it back the car will give me another 20 miles at 80 mph and do the same thing again. Floor the gas pedal and the car is not moving. I was wondering if anyone have an input of what might be the problem because the car is misfire. if i reset the misfire and drive the car for a few the code came back. And i am also having a problem with the car on first gear it jump beside all the rest of the gear are fine. The trans code says upshift delay switchover solenoid. i was wondering if it's a big job