It sounds like you need to have the speedometer head removed from the car, disassembled, cleaned, relubricated, and calibrated. Look in the yellow pages for a shop that can recalibrate speedometers or go to the biggest auto store in your area and ask where everyone sends them. You could also try Hemmings Motor News under "services". You should be able to remove and replace the speedo head but don't even think of trying to clean and calibrate it yourself! You could also send it to one of the Delorean venders, they would just send it on to a speedo shop anyway though. While it is out you might want to consider getting the higher speed decal and having the speedo recalibrated to that. While you are at it lubricate the speedo cables (upper AND lower) and the angle drive. David Teitelbaum vin 10757 --- In dmcnews@xxxxxxxxxxxxxxx, id <ionicdesign@xxxx> wrote: > What makes the speedometer jump when i first start driving my car? It doesnt really jump > it just reads at a higher speed till it warms up. after a while it stops and goes away. > Like at 2500 RPM i should be at 65 MPH but i am reading 75 MPH and after driving for a > while it will drop to 65 MPH, this seems to happen in the cold weather. > > Mark > 6683