My 2002 Camry looses power going up hills

Check air filter and clean throttle body replace fuel filter add Lucas Fuel Injector Cleaner to gas tank.

I agree completely, I have driven many many miles with my XLE 2 motors, 7 states, on my trip I replaced a speed sensor, it was only reaching 50 mile per, hr then shifting to nural is easy to replace and its right above the cam shaft sensor. I modified cold air intake with hoses i found and it reaches under the bumper and under the air filter, 2.25 pipe to axle. 2.5 to turbo muffler resonator tip. No cat converters. Make sure CATS are clean. I forgot there are one CAT on the manafold wires are cliped. I took manifold sensor out to scrape and clean the CAT and surprisingly the torque pulls thru all RPMS it will burn the front wheel drive rubber in 1st. My advise on any car is to clean CAT because the gas in those 7 states I traveled collected elements that caused engine failure, I mean it blew the hell up. So I found a low milage engine its a beast, the power band pulls its self hard in the higher RPM range, after the cold air at the bumper under the stock air filter and the bigger exhaust, turbo muffler, it pulls like strong V6, TRD Racing Development windshield sticker, which adds 10 more horses ha ha, My wife painted the wheels black, the color this XLE is dark grey metallic I lowered the front suspension added 2 sway bars, 1 bracing the 2 strut towers under and upper the hood and the frame, it is very quick turning level in curves, it took time but it is worth it octane will add extra boost at the front wheels! I might race a mustang or a camaro soon ha ha