pwonder Posted September 26, 2007 Share Posted September 26, 2007 92 sc400, when driving between speeds 40 to 60 mph and letting off the gas there is a slight jerk, when applying gas there is another thump. Constent pressure on the accelerator and it doesnt happen. As soon as you let off the gas... its getting to be annoying. Under 40 and over 60 no problems. There's a thread on here that I thought sounded like my issue, it was told to change the spark plugs, wires, dist. caps and rotors. I did that but the problem is still there. Can it be the coils??Took the car to my mechanic and he's saying there is too much play in the differential. I saw that there is a hair-line crack near one of the bolts where the drive shaft meets the rear. Can it be the tranny?? I dont think its the trans because if you progressively apply pressure to the gas pedal car runs without problems. Can anyone add some insight??????? I have another 93 sc400 sitting in my garage, but i dont want to swap rears unless im confident thats gonna solve the problem.. Quote Link to comment Share on other sites More sharing options...
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