I'm having hell with my PCM right now. About 1 in 5 chips will work and I'm not sure if its actually in the PCM or the chips themselves. I've got the reflashable type that are getting old but I don't know that there's really any wear item to them. My Burn1 always verifies them as being good after the burn so what gives. When I connect scannerpro it will say connected on key on engine off but has no data to display, TPS, MAP, everything is all zero. Start it and it starts flashing data error and still not data displayed. It acts like a PCM issue yet the PCM runs off the chip so I'm not sure what to do. It does this with all chips on known good BIN's. Then it will randomly go to working when it wants. I'm lost.

 

Most flash chips have a decent number of re-flashes. The ones I've been working with are good for a minimum of 10K erase/flash cycles. The newest ones are even higher.

What does hurt them is static electricity. Flash chips are very sensitive to even small discharges. Damage to the data pin drivers can make the devices flakey.

When I did chips they were always in a piece of static foam. This is the black carbon laced foam. Keeping the fingers off of the pins, ppick up chip from programmer, place onto/into foam, move to the ECM, set foam on ECM case, pick up chip and into socket.

RBob.