Hello. I would like to give you the most important technical data of the car for the best. It is a 156 SW with 2.4 JTD. Has proud 290.000 km on the clock and ran up to the following problem great. Year of construction is 2002. Now to the problem: If I walk at over 2000 rpm off the gas, it just goes out and tells me “error engine monitoring system. Visit workshop”. The same happens often when I walk with inserted gear from the gas. If I drive it very undertour (never over 1500 rpm) he drives without problems. A error reading unfortunately did not bring any codes (even read out). Now I have read a little bit, and I have often stumbled over it, the similar problems caused by the OT-gber. How can I check this? Also I noticed that the temperature never rises above 70°C, is that normal? MfG