I have a Mazda Tribute 03 and when I accelerate it loses power and has flat spot. It stops when I go up hills. I have replaced the TPS fuel pump from catelytic converter and it has not fixed prob

Make sure your vacuum hose is hooked up from your top of the transmission pan.

Might need a transmission fluid and filter change. Pretty sure no codes will come up for tranny f- ing up. Or could be as simple as a dirty feul filter only allowing a little bit of fuel through

Or fuel pump had a similar problem kept getting worse kept throwing new sensors on it finally replaced the pump for a cpl bucks and it was ok

Or timing

Or stopped up catalytic converter