Thanks, that is the direction I was heading, Just so I don't sound like an Idiot to my dad, where is the MAP located on the MB 350SL(4.5L) Also, the other two sensors you were talking about, can I just replace them and not worry about it< Thay couldn't do to expensive? HWere are they located, I will Fax him the Answer to test.
Where are the Water Temp Sensor and the Temp sensor located, actually is there a diagram I can see online somewhere,
I like this forumn, I can Call my Dad and he is amazed how much I really do know about cars, evn though I can't even change the oil on any of my cars. THANKS for th ehelp.