K heres the deal, I got one of those actron code scanners from autozone, ya know you buy the seperate cable and cartridge for your make of car. Well i've always thought it was just an expensive code reader, but this past weekend, we found it will watch all kinds of sensor readings etc. So i hooked it back to my car after replacing the 24x crankshaft sensor, says the 24x signal is still bad, but the car is a completely different car now with the new sensor. Different sound, runs smoother, etc. Onto the point. I was looking through the parameters, and found 4 things that made me wonder. My car has chronically had EGR 2&3 malfunctions, inspite of replacing the valve and silver conduit looking tube. Going through this data stream, i found something that said quad drivers. Here's exactly how the screen read.
QUAD DRIVER 1-----BAD
QUAD DRIVER 2-----BAD
QUAD DRIVER 3----- OK
QUAD DRIVER 4-----BAD

I had no idea what this was talkin about, i thought maybe it was talking bout the headlights lol. But i looked the term up in the Actron manual, and said something along the lines that these are in the computer and are what controls a number of solenoids and switches on the engine. I'm wondering if this is causing my 3 codes EGR 2 and 3 malfun. and loss of 24 x crank sensor signal. I'm betting there isn't a way to fix this either. Anyone got any opinions? i'm gonna post this in the comuter tuning section also. Thanks