Come to think of it, if he was alive, he'd be 96. Would he even be in power as more than a figurehead?
depends on his health, at the end of his life, Mao was blind and sick, that together with the fall out of the Cultural Revolution and Mao's need to purge Lin Biao's network, and his basically murder of Zhou Enlai (turned the once totally loyal Zhou against Mao) forced him to basically bow down to the reformers, they weren't ready to fight to the death with him, and he basically sold out his wife and Gang of Four to Deng Xiaoping and his, any ways it seems likely that Mao even in his dying days was plotting his way back to total control, Mao was never totally king like Stalin, his fellows at the top of the party could, when the stars were alined stop him, and Mao had fallen before, after the Korean War and Little Leap Forward, after the Great Leap Forward, and at the end of his life, after the Cultural Revolution
keeping Mao alive and in any kind of power means he'll claw his way back, crush the enemy
so if Mao in 1989 is anything close to healthy, sane and able to talk even, he'll be in control, maybe at a low ebb but the old fox would be still in the game.