I am starting to feel like I have bought a lemon.... Not long after I bought my 2004 GTP Comp G....one owner....always dealer serviced....100K miles, I had a catastrophic failure while my wife was driving (first time she drove it.....also the last time she drove it)....I believed it to be a LIM gasket failure so I tore down the motor to the required level and replaced everything that could be replaced....including the "elbows".....car ran great for about 6K miles....then the gremlins associated with the ABS/Wheel Sensors/Computer started up....still sorting that one out. A couple of weeks ago while getting on the interstate....full tilt boogie....white smoke in my rearview mirror....tow home....the new plastic (why plastic??) elbow has busted....coolant pouring from that....easy enough to replace since I have been here before. I never throw away removed....assumed to be good parts from a car so I dig in my GTP bin and locate the original elbow that I had removed and replaced from my LIM gasket project.....and what do you know....it is cracked.....don't know how I missed that the first time but that totally explained the original failure while my wife was driving. So, it's been a couple of weeks of event free driving (except for the ABS, Traction Control, Stability Control, Tire Pressure, Variable Assist Steering gremlins) until Thursday.....as I am accelerating.....loud knocking from the engine bay......NOT GOOD! I come off the gas and the loud knocking goes away.......on the gas....there it is. So, I baby her home.....slow acceleration to prevent the knocking. It sounds like a broken valve spring but this morning, I tried to isolate exactly where it is coming from and I can't.......then I remembered reading something about the "anti-knock sensor" or something like that for SC motors....is it possible that this terrible knocking is actually just the sysmptom of a bad sensor?? I am really at a loss of how to proceed from here......this is my daily driver and I am starting to feel like I made a poor selection.
