fozzdesy2001
Thread starter
I was thinking the same thing and was amazed at the difference it made when cleaned IACV on my Subies but this Toyota was a no-go for cleaningDo these cars have an idle air control valve? My '04 Subaru did, and when the IACV started to die it caused these symptoms.
If you have the OEM filter setup I would revert back to that and see.
Idle is rougher with the air on not as bad with it off. It's had 3 tanks of gas through it one with Techron. fully warmed fuel trims short -1.6 to 2.3 long 3.1 RPM 792-810 with on short -.8 to 1.6 long 3.1 RPM 792 to 814 temp for both 186FHook up a scan tool capable of live data, especially fuel trims but of course check for trouble codes while you're at it.
Does it only idle rough with the A/C compressor on? What is the idle RPM?
New to you as-in, have you even put a fresh tank of gas in or might it have sat a while and have old fuel? Might also be worthwhile to put a double dose of fuel injector cleaner in it.