02 ES300 constant revving after starting

[Seanamus]

02 ES300. 200k. I offered to fix my elderly neighbors car after he accidently "bumped" into a wall at the gas station. It looked like he'd need a bumper cover and a hood. No airbags deployed. Different story in the daytime. But I got it all patched up but the engine revving, heres what I replaced: condenser, maf sensor, vacuum switch valve, air filter, a couple of vacum lines that were cracked. I do have a left over line thats about 5-6' long that initially wasnt connected to anything, the lines from the insulator are accounted for along with the rest of them.Any suggestions before I go get a pricey iac valve? No codes

Edited April 20 by Seanamus
fnish sentence

[RX400h]

Quote

It sounds like you’ve done a thorough job checking and replacing parts. Here are a few suggestions based on the information I found:

1. Check the Coolant Temp Sensors: Faulty coolant temp sensors can sometimes cause revving issues.
2. Check the Throttle Position Sensor (TPS): A faulty TPS could potentially cause revving issues.
3. Check the Idle Speed: If the idle speed is too low, it might cause the engine to die when put into drive.
4. Check for Clogged Fuel Injectors or Dirty Engine Valves: Gradual power loss, sluggish acceleration, and lowered fuel economy can be caused by dirty fuel injectors, dirty engine valves, and combustion chamber deposits³.

If none of these suggestions resolve the issue, it might be worth considering the IAC valve. However, it’s always a good idea to exhaust all other possibilities before investing in a pricey part. 

 

[Seanamus]

Thank you RX. I'll keep yiu posted.

[Seanamus]

Well the neighbor ended up giving me the car, probably since I spent so much time tinkering with it, long story short and a lot of unessesarily replaced parts. (MAF sensor, TPS upper and lower, air filter, TPS wiring harness ) So It ended up being the iac which is attached to the throttle body (cleaned that twice too) so I put that in and I'm pretty good now, but seems sluggish. I still have the trac/VSC light is stuck on, and yes I've shorted it at the obd2 plug-in but it comes back on when I put it in Drive. I also put a new battery in it too, now the security system sometimes won't let me start it.