CFLFORMULA93

Last night I installed the g1 and chip into the ecm of my 93 formula The car started right up and I went for a test drive. First thing I noticed was no speedometer. Up until 3/4 throttle the car responds well however at wot it sputters/cuts out. Maybe a fuel problem? I pull back into the driveway and the car stalls and will not restart. I go back into the ecm and find the adapter to have come loose. I renistalled stock memcal and engine fired. Replaced with g1 and chip.Engine fired I drove to work this morning car ran great. Still no speedo and still has wot stumble but runs. Now will not start again. Im snapping it in tight and tabs are coming up.....am I doing something wrong. Is the zif socket a must have to hold it place?

93M6Formula

Hmm never had that issue with mine. I know that when you push it in sometimes the tabs will come up and act like it's seated in there but it can easily pull out yet. Just have to double check when you push it in that it's all the way in. Never had mine pop out.

lt1-xjs

Take it out inspect and reinstall it. Make sure all the pins are straight and the chip is seated in the adapter correctly. Then install the adapter.

CFLFORMULA93

im starting to think its not the chip because I have lost all spark. Tried to jump with screwdriver and nothing.....so I would assume a new coil or ignition module ? Should I replace with stock parts or upgrade the coil?

93M6Formula

STOCK parts only, they are more than capable. And keep it GM, not parts store junk.