Danielsmustang

guys, so i guess it was a bad ground the whole time. i cleaned out all the grounds, car runs great ! i raised the idle, it still has a misfire, but im guessing thats the tps. now, this is the question, when i turn on the car it turns on fine, it goes up to 1500 rpm then drops to 1k after warm. but in like 1 minute, it starts misfiring again for like 30 sec to a minute, then its gone. then it doesnt matter for how long ill drive, it doesnt come back. but if i turn off the car, and turn it right back on, same thing will happen. What do you guys think?

Danielsmustang

im selling the car today and would to fix it before hand. I tried grounding the tps manually, and when i do it stays at 1.06, but it misfires more. i didnt try restarting the computer though. Any ideas?