Hello need help,on my 280sl V6 lights up the engine control lights.Have read out error memory,diagnosis Lambda control.That’s what I renewed all four Lambda probes,control pollution again and engine runs like a bag of nuts,error memory read out again result Lambda probe right before Kat no heating and no regulation the same with the Lambda probe Rechs after Kat!Have now changed the Lambda probes already for the second time with original new parts.The result remains the same control light on Lambda probe right no function. Can one of you tell me where else I could look for the error. with kind regards SL Bongo