sounds like car bogs/stumbles under 1500rpm when I hit the accelerator. why?

[bennington28]

I gave my camry a tune up because when I hit the accelerator the car makes a low muffled bog/stutter-like sound at first(under 1500rpm) and then the revs pick up normally(1500rpm- up). The tune up did not fix this issue. I also changed the fuel filter. What would cause this? Could it be a bad cat. convertor? When you "mash" the accelarator, the rpms should take off without any hesitation.

the car is a 93camry l2 2.2 with 90000 miles. Runs like a champ.

[Piddy]

Check for exhaust leaks. Might want to try cleaning your injectors also. My 5sfe acted similar with an exhaust leak.

[dmottaway]

check, also, your throttle position sensor. one of its main functions is to detect sudden changes in throttle, much like an accellerator pump on a carb.

dave