Originally Posted By: Char Baby
Originally Posted By: hypervish
Originally Posted By: Char Baby
I need to do a real good TB and IAC Valve cleaning on my wife O1 Lexus RX-300. Anyone have any tip on this particular vehicle, please comment.
The engine starts fine, idles fine, passes traffic fine and excelerates fine. But, step on the pedal to do a WOT and it's only fair. The engine doesn't bog down nor want's to quit but, it's not what it should be. It's like it can't breath well. Something is missing(not a miss in the engine). Nothing you can hear/feel. Tranny kicks down, exceleration picks up but, not where it should be. It's as though some butterfly valves aren't opening all the way so that the engine can breath. Or something is restricted. No one that I demonstrate this for can tell there is anything wrong, just me. Because I know where the performance should be. TIPS PLEASE!
Look on the forum at club lexus. You need to adjust the accelerator cable on the throttle body, for optimum performance. I've done it myself, and it makes a [censored] of a difference.
We also have diy's for throttle body cleaning, iacv cleaning, and maf sensor cleaning.
edit: didn't realize lexus114 already told u about the adjustment.
I will certainly give this throttle cable adjustment a try! Looks to be an easy start to things. If this cures my lack of WOT responce, I may leave the rest alone til another time especially since I have a ton of other things to do this summer besides working on vehilces.
I adjusted the throttle cable exactly the way this was discribed on Club Lexus site. NO CHANGE!
But, like I said, the engine still runs very nice, just not as strong as I think it should.