HELP! My car has been studdering, the engine acts like it wants to stall and then starts back up again. I have looked at other posts and changed the CPS and also the battery but the problem seems to be getting worse. I also did a tune-up and changed the plugs, wires, cap, rotor and distributor. At first, it only would studder for a very short time and not very frequently. Now it lasts longer (about 10 seconds) and is happening more frequently. I am not sure if this is related but I also noticed that the doors have not been locking at 15mph. Then today they locked at 30mph after it studdered. I would appreciate any help, thanks!

more info 5.2,4.7.4.0,3.7 what motor????????automatic,,,stick,,,,

more info 5.2,4.7.4.0,3.7 what motor????????automatic,,,stick,,,,
The engine is a 4.0 6 cylinder, automatic. Thanks-

Think I found the problem. With engine ideling I started moving wires around and when I moved the wires by the pcm it would stall. dirty conection at the pcm plugs. Problem solved.