DIY PROMDo It Yourself PROM chip burning help. No PROM begging. No PROMs for sale. No commercial exchange. Not a referral service.
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Hi and thanks in advance for the help. I have a 1995 S10 4.3L Vin Z. I Have a intermittent check engine light. The system has a OBD II connector but its the OBD 1.5 that a lot of the cars from 94 and 95 have. I disconnected The battery a for about 1/2 hour and then took it for a ride. The check engine light came on in about 3 minutes. The truck ran poor most of the time. This is the codes that I am getting by jumping pin 4 to 12 on the 16 pin obd II connector.
Is the prom and Mem-Cal error because I had the battery disconnected and did not run the car for 15 to 20 minutes or is the Prom bad and or the ECM. Is the Incorrect MEM-CAL code 51 a check sum on the prom memory? If it is normal when you disconnect the battery then should I be looking to replace the Ignition module for the trouble. Thanks again for the help. Retired Phoneman
DTC - 41 MEM-CAL error DTC - 41 C³I Cam Sensor Signal error DTC - 42 Ignition bypass circuit error DTC - 45 Oxygen sensor error (rich condition indicated) DTC - 46 Pass-Key II (VATS) system error - circuit out of freq range DTC - 51 PROM error DTC - 51 Incorrect MEM-CAL DTC - 52 Fuel cal-pak incorrect or missing DTC - 65 Right bank O2 sensor rich exhaust indicated DTC - 67 A/C pressure sensor circuit error
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