My 2005 Element has 186,600 miles on it and I'm starting to have a lot of problems. I thought it was the transmission but AAMCO doesn't think so. They are getting a P2646 code which is the same code that caused the dealership to replace the VTEC Oil Pressure Switch two times previously, the most recently was in Feb. '10. AAMCO says the code is a circuit fault and not a part malfunction and they are questioning the dealership in replacing the part when root cause appears to possibly be an electrical issue. When I'm accelerating the car starts jerking and trying to stall around 40 mph then settles down above that. Also at 70 mph on the Interstate it's like the transmission has shifted to neutral... there is a slight jerk then I have no acceleration until the car decelerates to 60 mph and the ability to accelerate returns. That's why I thought it was a transmission issue. There is also a tapping coming from low in the engine when the car is idling that isn't constant but seems to come and go in frequent cycles. I've been losing oil for about a year now and cannot go between 5K mile oil changes without adding a quart. I know all this sounds really bad but I love this car and I don't want to get rid of it. Has anyone with a high-mileage Element had similar issues? AAMCO thinks the tapping is thrust bearings in the motor and they want to take the pan off to see ($660). The dealership says I need a whole new motor! ($5,000) (no surprise there) Not knowing much about cars, I'm at a loss as to what I need to do...