Hello, how sure some of you know I have since January 2012 a Volvo S60 2.4 with automatic transmission. After I and also some here in the forum initially assumed that the problems on my car have to do with the old battery, a new one was installed. Now, however, the car makes problems again! The following things: 1. During the cold start the speed fluctuates and when I insert the driving stage “R” the car almost goes off. 2. Partially the engine light burns (orange) and the following strikes me: – louder engine noise – less power (almost no kickdown possible) – hard switching of the gears (are hit or switched unnecessary) The reading of the error memory resulted in “error signal camshaft” Have already had the error memory read out two times but the problem continues to appear! A conversation with the previous owner showed that the car did not have these problems before. Now the toothed belt has been changed to me before the sale. Can it have something to do with it? Do you have an idea? LG from Chris?