Mark460

I'm wanting to buy some new plugs for my 2000 RX300. I currently have Denso Iridium SK20R11. Looking online, I see 9008091180 as the OEM part number for this vehicle. I occasionally order from Rockauto, they have 5 plugs that correspond to the part number above, but not SK20R11, not sure which to get. Also look online and some places use a 4 digit number for the Denso plugs. I’m just looking OEM replacements without an extreme markup on the price. Also, in the past, I’ve been disappointed in some parts ordered from Amazon, which were advertised as AC Delco and they were low quality maybe a counterfeit of the real deal.

Occasionally the engine will not idle. I can hold the gas pedal and increase RPM and it runs fine and I can get it on the road and drive the car fine, but if I let off the gas it dies immediately. After driving for a while, it clears up and idles fine. Then it may work great for days, starts up cold fine and idles immediately, and then one day it will act up again. Is there an idle air control motor sticking? thanks Mark