i have a corsa sri 2005, have been having problems with maf sensor, it started when the car became sluggish or revs went too high, code was po100 for the sensor, had it replaced, new filter, cleaned out air system etc, and although some improvement was noticed it still doesnt pull right, sometimes even leaving me panicking at the junction !! and when trying to keep it at a steady speed it will either surge or pull back, horrid sensation, bit like riding a kangaroo !! it went back to the garage still coming up with sensor code, so tried another new sensor incase the first was faulty, code wiped etc but no change, sent to electrical engineers they ran through all they could think of, kept wiping the code and re running it, but it left them stumped !! now if you unplug the sensor it runs fine, and the only suggestion the garage has is to change the ecu, but i have read that it could be just a simple re earth of the sensor wire, however my garage are reluctant to do this in case they make things worse, but im not happy to pay out for a new ecu if it is just the earth wire, so any suggestions would be greatly appreciated, cheers