Need to replace the Throttle body, or alternative repair the old one.
Pot meter (from Denso) is not working properly.

Where could I buy the pot meter or a complete Throttle body at a resonable price?

 

Search... this has been covered a lot before.

ASI do rebuilds, with a lifetime warranty. Others have had success just replacing the TPS (throttle position sensor), if you can find the right part number.

https://www.autoecu.com/

 

In my opinion, I think ASI kinda sucks. I know it's a go to alternative for a TB rebuild and it beats $1500-$2500 replacement TB's, but honestly, it's a hit or miss kinda place. We had a TB rebuilt by them and the car hadn't left for weeks. Not kidding. After the second time, then it was ok. We did have another car come in with an ASI rebuilt TB and we ended up sourcing another tb to get it right.