I drive my Oopel Omega 2.5 V6. Before weeks he suddenly got hot.Then the water pump was changed. Unfortunately, there was no help.Now four weeks ago the ZKD was changed with all possible seals.Also the thermostat.It suddenly rises to 97 degrees, then falls to 92 degrees and then commutes to 95 degrees.When I drive quickly he usually stops the 95 degrees.If I drive in the place,or through obstacle slower, it rises to about 97 degrees and then the air goes Then I turn it off and ignite it again, it rises briefly to 100 degrees and then falls quickly to 95 degrees.What else can be there that it still gets more temperature? No water and no oil loss.Air conditioning is no longer possible.But that’s certainly not the case.Why is it getting so warm?Please answer and help.I can still change the coolant sensor because I bought it.Thank you for your help.Have put in 2200 euros in the last months.It’s enough now.