I'm doing all freeway now and the gas gauge is falling fast. It took the car this morning 7 miles to go into overdrive. It usually does it in 4.5 miles. Something is definetly wrong.
Sounds to me like your transmission is definately slipping. Besides your cousin throwing it into nuetral and then drive a few times, have you done any HARD driving lately?
not really. I follow the instruction manual, it says that you can upshift the tranny all you want but you can't downshift unless the car is parked and the brake pedal is pressed.
He has thrown it in 1 or 2 during freeway speeds. One time he threw it into 2 while I was going 65-70mph, luckily second ends at 74mph so it just revved to 5800rpm and I had to upshift it back to D. He thinks by downshifting it it will go faster. He doesn't even know how to drive a manual. Another time my co-worker accidently hit the shifter while I was going up a very steep hill at 3000rpm, it revved up to redline and before I could react she put it back into D.
Also I noticed the rpm is a little higher at 65mph then it should be. Before it was like at 2100rpm, now it's at 2175-2200rpm. I pay attention to rpm a lot, it really helps getting good gas mileage.