Ford Repair Questions? Ask a Mechanic for Answers ASAP
Welcome, I'm Chris and independent contractor that helps customers here.
When at full throttle, does the transmission down shift, does it misfire?
Any warning lights on?
Any odd noises?
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Thanks for responding. My suggestion is to monitor the MAF sensor reading and fuel pressure during this event to see if there readings go out of specs indicated on the scan tool. I asked if it would downshift, and you said no. Unable to downshift at full throttle can also be to blame for low power. The transmission needs a accurate MAF and TP reading to know when to downshift so more power can be made to gain speed.
You said you just got it from the Ford dealer, did you just buy it or just had it worked on?
Have you compared it to another, to see if your just not accustomed to this weaker motor in this large vehicle?