Hey guys I'm having a issue I have a 98 Grand Prix GTP stock and it's been ok until now well recently I did both control arms and the next day i noticed while driving on the expressway any were from 50-75 or trying to accelerate lightly the RPMs drop and the car starts to shake or flutter like a misfire until I let my foot off the gas or lightly press the brake then it goes back to normal just for a little bit & as far in street driving it does it after 35Mph i haven't had a clue what's going on I don't know if its the trans or engine any ideas
