On the highway and tried to hit the gas to merge and the car did nothing on 2005 Ford Crown Victoria

Tried to hit gas again and car just started to slow down. What is this

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2 answers
If you do not have a check engine light on, have exhaust flow checked for a possible plugging cat. converter. Symptoms: bogging down on hard acceleration, loss of power and failing to accelerate on inclines and sometimes rough running condition in idle at stoplights. Exhaust will back up and 'choke the engine'. May cause o2 sensor codes and egr code.
As stated, have it checked for exhaust restrictions, fuel pressure, etc. Feel free to call me if you have other questions