03 lancer bogs down
 

So I just did a lot of maintanance on my vehicle clutch trans wheel cylinders and vearings timing belt water pump. It ran good for about a month and all of a sudden it would a t like it has lost all spark or fuel. RPM'S don't drop off they just slowly decrease as the car slows down. It will cut on and off. I gonna go get it scanned again today once I reset the battery it will run good for about 25 miles and then act up again. So I know its not a clogged cat. I have also replaced all my grounds on the repaird a broken wire to the 6 pin harness that runs into the throttle body under the intake. Any suggestions to get me in the right direction would be helpful

Anyone???