i had a similar problem and heres how u go about fixin it.... sound to me like ur engine is having trouble delivering fuel, because when u go to higher rpms ur motor will consume more fuel and it sounds like there is not enough comming back to the engine to replace that extra fuel burned, so start out by changing the filter, and if that dosnt help replace the fuel pump... all of this should cost u maybee 100-120bucks at auto zone for the parts, the pump also has warranty on it... after this u should be all set...
|