138708, Ecu flashing Posted by Eclipse9895, Dec-31-69 06:00 PM
So I recently replaced the ecu in my 99 gs, and when I put the key in and turn it to the on position without cranking I get a check light and fuel pump primes for about a second and then the dash lights cut out and the tach starts to float. I have a numbers matching ecu, and I've checked all connections and grounds. My question is do I have to get the ecu flashed to my vin #??
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