Why is my car running flat??
Why is my car running flat?? When driving "normal", part open throttle, and accelerating through the gears the engine just goes DEAD FLAT at around 2k. I can play with the gas peddal and it keeps hesitating. Now if I go WOT it will kick in. Since my tune months ago I havent changed much at all. How could it just go down the drain?? O2 sensors are new. Exhaust temps look normal...getting one cyl. slightly cold though (40* colder). This is a real problem... in the morning sometimes it wont barely go..running VERY lazy and flat. I have done extensive testing and the only thing I can think of is the tune is no longer accurate. I cant tell if I'm getting lean or rich conditions during the hesitation. No SES lights at all...
Oh yeah and I have over 4 grand worth of parts on my desk that I will be installing soon including heads cam intake etc.. I just wanted to find the problem before the big install. If I cant find it hopefully it will be cured when I replace pretty much the whole top end of the motor.
