Power loss in Nissan Tiida.

[terique]

Getting a major power loss with AC on. Car feels like it's in second or third gear. It's even worse with load in the car as well. Anybody ever encountered this problem.

[TurboSingh12]

Those Hr 15 on the whole very lazy.When last a service was done?

[terique]

Within the month. I won't say is lazy. It feels like it's hesitating for first and second gear

[daxt0r]

check your X pedal voltage and validate it reading within spec
Actuating the throttle and observing TPS is also good idea

[terique]

Went to do a service and they did a compression test. Came back with 120, 120, 140, 120 in each cylinder. Mechanic said head needs to change. Is that compression test reading normal or was he right?