06 Mountaineer feels like hesitation when accelerating uphill, lose pwr

[cntrylaw]

Hi there, I am new on here, and I am having problems with my 06 Mercury Mountaineer. When I accelerate uphill or try to accelerate to pass someone, it feels like I am hesitating or cannot get the power I need to do so. I have serviced my Throttle body, replaced the spark plugs, wires, and box, new batt, new alternator, changed rear and front diff and fuel filter. Not sure what else, I also have a closed transmission, no dip, nothing leaking.

Also, I have a loud noise coming from the front of my car when driving freeway speeds, changed the brakes and rotors, could it be that my wheel bearings need to be replaced?

Thanks for all the help and support, trying to do as much as we can ourselves.

 

[ZWilson07]

Welcome.

Do you have a check engine light and/or any codes to start off with?

Also do you have a scan tool/diagnostic tools or access to anyone that does?

 

[cntrylaw]

No check engine lights on, and no codes. I think we do have access to a diagnostic tool.

 

[ZWilson07]

No check engine lights on, and no codes. I think we do have access to a diagnostic tool.

Try and monitor your STFT and LTFT.