Diagnostic Help

[SupraAMS]

So I need some help! I just bought a MKIII non turbo. Same day I drove home and on the way home the gas would stick at 4000 RPM. So first thing I did was jump on here and look for tips.

First thing I did was run a diagnostic and got the following codes:

24, 32 and 51.

I looked them up and first step was to change the air flow sensor. following that I checked and cleaned the ISC.

I then reset the ECU and ran the diagnostic again. Now I only get the 51 error.

BUT the motor continues to Idl at 3000 RPM.

Any one have a tip?

Supra AMS