1994 Chevy caprice

Asked by Feb 14, 2017 at 09:50 PM about the 1994 Chevrolet Caprice Sedan RWD

Question type: Maintenance & Repair

My 1994 Chevy caprice  ecu is not reading an it is
new ....an my car want accelerate  fast Some times
then catches speed

2 Answers

124,215

The ECU may de defective or needs reprogramming

1 people found this helpful.
81,485

When replacing the ECM you need to transfer the PROM from the old ECM to the new one. Your Caprice is OBD I. You need to flash out any stored trouble codes with the service engine soon or check engine light using a paperclip in the upper right two terminals of the ALDL connector under the dash. You can't use a code reader unless it's OBD I compatible (GM 1981 thru '95 only) or has an adapter for OBD I vehicles. HTH. -Jim

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