95 lt1 computer
Thread Starter
Teching In
Joined: Nov 2010
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95 lt1 computer Is the tune in the actual PCM or on that chip in the PCM. Say if i bought a new PCM from autozone could i put the old chip in it would it work that way or would i have to take it to the dealership to get it programed? It might be a dumb question but i cant find it on google.
TECH Regular
Joined: May 2010
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92 & 93 were the only years to use the eprom chip, the 94 and up are flashed into the pcm. Are you thinking you need a new pcm? Very rarely do pcms need replacing, they don't go bad except sometimes when you tune and loose power/connection half way through.
Thread Starter
Teching In
Joined: Nov 2010
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Well i had some problems with it but my opti messed up at the same time also. the water pump leaked onto it and it shattered my rotor i just put a new cap and rotor on it and kept the opti but it keeps doing what it did before. is there a way i could check to see if the PCM is good? Im pretty sure that its bad since i replaced basically my whole ignition system along with the sensors and its not trowing any codes. I have new spark plugs, wires, icm, tps, water pump, iac valve. air temp sensor, cap and rotor, coil, and the fuel pump is strong. it will hesitate and misfire sometimes but them randomly it will snap out of it and run fine for a few seconds then start doing it again.
