Its been a while but i'm back now. Alright, I did the 4.0 throttle body conversion, a K&N drop-in and reset the computer. I had great power, acceleration, and mileage. After about 150 miles it pretty much remained the same, so i thought the computer was done learning it. Then, a couple days ago it dropped back to the way it used to be like I never did anything and it picked up the kinda rough idle again too. Its not really rough just feels/ sounds like I need a tune up. Less than 6 months ago I did plugs, wires, cap, rotor, and because of a piece of crap wire tap (that took forever to find) I also replaced coil and the ignition control module.
What would be the cause of this?
I cleaned the I.A.S case (whatever you call it, the piece that the sensor goes into) after I accidently used the 4.0 and had it rev to over 5000rpm and not come down! So thats fine. I cant really think of anything else. Do you think if I upgrade the igniton components it will fix this? And the last question is should my idle be back done to about 900 where it used to be before I put the throttle body on? Cause right now it sits anywhere between 1000rpm and 1200rpm.
