Discussion Starter · #1 ·
Hey guys, I'm new to the forum so first of all hello to everyone. I have a problem with my 1993 500SEL. Recently I've changed the spark plugs and since then the car started to idle rough, not all the time but noticeable. While changing the plugs I've realized that the wiring harness had deteriorated so I went and had it rebuilt. Today I've mounted the harness and started the car and it idles rough all the time and has really poor acceleration. I'm wondering what the problem could be. Also I had transmission issues when I bought the car so I changed the tranny. The one I installed looked to be in perfect shape and the oil inside it was perfectly red. Since I put it on I've done about 3000 kilometers and the transmission started to slip, there's a few second delay when putting it in D/R. When the car is in 2nd gear and I floor it, it starts to rev all the way to redline but doesn't change gear and changes only when I release the gas pedal. Any help would be much appreciated.