2000 Honda odyssey van p1607-internal failure of the PCM code, green immobilizer key light flashing, but starts and runs. Takes off very slowly.
I've replaced the ECM, immobilizer receiver, new battery, had key recalibrated to the ECM by the dealer.
Someone tried to steal it, replaced the ignition switch, then replaced the ECM and had it cloned, then replaced the immobilizer receiver( around the ignitionswitch/key) that receives or sends the signal to the ECM. Will start and run with our with new immobilizer receiver or with the old immobilizer receiver.
Problem: green immobilizer key light is still blinking , it will start and run but a bit rough for a minute and check engine light won't go off, but it takes off really really slowly, then after running for 15 minutes if you turn it off, the blinking green immobilizer light goes away and then it runs just fine, it clunks when putting the thing in gear - but shifts just fine when driving. The D4 Light won't light up when puttting it in gear, but once you drive it for 15-20 minutes, shut it off, then start it again, green blinking light goes away, and when put it in gear, it doesn't clunk into gear, and also the D4 light lights up now on the dash.

Any suggestions.
Thank you
Mike