: 1981 cadillac coupe deville- help!

cadillac bee
11-07-12, 07:09 PM
Hey all! I have a '81 coupe deville with the crappy v-8-6-4 engine in it.its in excellent shape but i cant get the check engine light off due to diagnostic numbers 25 and 30, which occassionally switch or dont both show.also the kickdiwn is horrible feel bad for my car when it drops cylinders.ive heard i can disconnect the v864 but dont know how, and also heard u can replace the engine w ith an olds 350.Can anyone help me save my car please your time is greatly appreciated.thanks!