2003 Ranger Sudden loss in engine power?

[socal_raz]

OK,
I all of a sudden lost a bunch of power in my engine. It will drive fine under 25 mph most the time, but if i get on it, the truck will lurch and lack power. On the freeway if constantly seem to just keep doing a little lurching while driving it. I just had the fuel pump and fuel filter replaced like 1k miles ago. If anyone has any idea as to what i should check that would be great. O and i have no engine fault codes ????

 

[snake]

Check to see if your catalytic converter is clogged. Attach a vacuum gauge and rev the engine up to about 2K and watch the guage. A drop in vacuum after 20 or 30 seconds would indicate it is clogging.

 

[socal_raz]

Yeah i actualy just replaced the Ypipe with the three Cats in it being as they came appart while jumping my truck

 

[snake]

Maybe U got some bad gas?

 

[85_Ranger4x4]

Yeah i actualy just replaced the Ypipe with the three Cats in it being as they came appart while jumping my truck

Have you jumped it since then? Cats don't like big impacts like that.