In 'park' the fan's coming on and off, on and off, and it feels like she's going to quit at a red light. So I had a new thermostat, everything else is fine, regularly serviced etc. Mechanic said it had to be engine management system ECU. So I found on, had it fitted, all electrics are a-okay. Engine fab in all respects, but she's still revving up here at there, fan kicking in and out, small surges when driving. Mechanic hasn't got a clue. I love my Viv and no one seems able to help. Has anyone here had a similar/same problem, and what was it in the end? If you can, PLEASE help. By the way, I'm a woman so I may not have explained it very well. Thanks.