I have a 95 that I bought to try and fix and drive so I can park my 07 ram. What it does is when driving slow and coming to a stop it quits but starts right back up. I've replaced all the usual sensors that everyone has listed. Then I decided to do the intake gaskets,cleaned the throttle bodies and did the o-rings on the injectors but still does the same thing. So I went and bought a ecm from a junkyard with the same part number but all it does it fires and quits. I unhooked the battery and left it for awhile and cleaned my truck and went back and hooked the battery back up for it to just fire and die. I put the old ecm back in and now it's really idling bad and smell very rich. Any help here