So I bought a 2007 Lexus is250 with 108xxx Ks like 2 months ago. I have been researching and found they get carbon build up in the throttle body, so during lockdown I decided to give it a clean.
Once I had taken it off and cleaned it with brake cleaner (did not have throttle body cleaner), I put it back on and decided to turn the car on with the air intake tube off to hear the suction. And found out real quick that the car wasn't happy, so I reconnected the intake tube.
When I turned the car on again it started to idle at just below 2000rpm and after a few seconds it kept jumping between 2000 and 3000 rpms. And now every time I turn the car on it does this.
I've tried turning it off and on, disconnecting the battery and reconnecting it, I've made sure all plugs and hoses are reconnected but the problems is still there and cannot figure out what it is.
I thought the throttle body is broken, I'm not 100% sure it is I just got a quote from Toyota just incase and they said $1850 for a new one from Japan, which is stupidly expensive and I cannot afford it.
Does anyone have an idea of what might be wrong.
Thank you.
