New IS300 SportCross Owner - Car has issues
Hello everyone! New owner of an unmolested 02 SportCross as of this weekend. Went to check out the car out and it had it's fair share of issues; bumps and scrapes (not too big of a deal), leaky tires due to curbed wheels (not too big of a deal), sticky dash (annoying, but I should be able to take care of this), VSC & CEL (P0300, P0301, P0302, P0304, P0306 and a few others that I can't remember.) To confirm the CEL, when the car started you could feel the misfires shaking the car slightly, but it was only noticeable at idle, under load the car was smooth. This lead me to believe the car just needed a tune up with new plugs, wires and more likely a vacuum line replaced. Ended up leaving with the car and getting it on the trailer. In the process of driving it down the street to get it on the trailer I noticed the car had issues going up a hill in drive, it was fairly laggy if it had power at all. Leads me to also think that the transmission fluid needs to be changed.
Got the car home on Saturday and put in the shop and started working on her yesterday afternoon. I went through and tried to source the vacuum leak with some brake clean around the vacuum lines. I was unable to find the source of leak, though I do hear what sounds to be air being sucked through a small hole. It's fairly loud and noticeable, but I've yet to source it. Figured since I couldn't find the leak I'd move into the first part of the tune up. Pulled the airbox hose, the throttle body and then went to town on pulling the wires, coil packs and then removed the plugs. Installed a set of NGK Iridium IX's. Per inspecting the wires and the coil packs I noticed that the wires were most likely original as well as the coil packs. I went and ordered a set of NGK wires and a new set of coils. For the sake of debugging the problem, I went with an aftermarket OEM replacement for the coils. In the long run I'll probably just have to stop by the local Toyota/Lexus dealership and get an OEM set to install, but for the sake of time and a bit of savings I just went with a cheaper set that had a high set of reviews, just waiting on them to get here.
Other plans for the car to get it road worthy and to pass inspection are to replace the fluids. Went through and ordered a couple jugs of OEM Toyota 'red' coolant as well as 12 quarts of Toyota OEM ATF. I'm trying to figure out what to do for oil at this point as the previous owner said he'd take the car to local 'Mom & Pop' shops to get the oil changed. Ideally, I'd like to find an oil and stick with it, so it will either be Motul, Amsoil, or Mobile 1 in 5w30.
I'll keep everyone updated on the progress.