I've had similar problems with my conversion....made me wish I kept the C6 as there were ZERO problems with it. Upon initial installation, my AOD would not shift out of first gear. Granted, the engine build took three times longer than I had anticipated but I had taken precautions with the AOD according to the instructions from the rebuild vendor because the AOD sat in my garage for three months. Anyway, rather than go thru the motions of removing the tranny and shipping it back to Florida, I decided to take to a local AOD expert. The pump was bad and a few other parts had to be replaced. Driving it home was an aggravating adventure. There was a delay shifting into third and downshifting from third had skipped second gear and right to first damn near throwing me thru the windshield. I was fuming. I took it to my local speed shop but on the way there the shifting had improved significantly. I was confused. The downshift was still weird but the upshifts seemed fine but few more trips out and the downshift problem all but disappeared. I then began to have idle issues. it was stuck on fast idle (1500 RPM) .You might think what the heck does idle issues have to do with TV cable settings. When I installed the my new engine build with tranny, the tranny came with the Lokar TV cable system. The install of the Lokar cable went well and I also installed a Lokar throttle cable. Anyway, back to the idle issues...... My idle would not come down from fast idle now matter how long the engine warmed up. I thought that my new Edelbrock 750 CFM carb was on the fritz. Took it off and had a friend disassembled and inspected since my 59 year old eyes are not particularly useful when dealing with small parts. He cleaned and tested it and found nothing wrong. I reinstalled the carb and then set the TV cable for 36-37 lbs of pressure but the idle was still high. I disconnected the Lokar throttle cable since it was frayed going into the connector that attaches to the carb throttle lever. It all moved freely. I then disconnected the Lokar TV cable and noticed that the cable was also frayed and bunched up inside the cable sleeve. Therein was the problem. The frayed TV cable in the sleeve was preventing the throttle lever on the carb from returning to idle. With the TV system on the AOD being so tempermental, I would not put it past anything that carb settings have to be near perfect and the cables, even though brand new, have to be inspected and checked for free range of motion. I ordered a new Lokar cable and replaced it. Works great but the Lokar throttle cable went into the trash and I purchased a new repro stock throttle cable with the integral spring. It all works great now.....except for the carb. VERY hard starting all of the sudden! Gremlins, Gremlins, Gremlins!!! Check that your throttle and TV cables are working without obstruction......
Ordered a Holley Sniper, Holley/MSD Distributor and Aeromotive Stealth gas tank with built in electric fuel pump. Ka-Ching!!
