Bought a 94 with 125k on it.Having a missfire and stalling issue. Gets worse when warm, and when you're driving and you take your foot off the gas the tach bounces and it dies (stays running if you drop into n or 2). I've replaced the crank and maf sensors. The check engine and gages lights are on. Can't seem to pull flash codes, I've seen where it may be an obd2 with an obd1 connector? And ideas or suggestions would be very appreciated.