hello my name is Joseph and I have a 1997 Toyota Camry.sometimes my car wont start and then I'll Drive it and it will stall when I let go of the gas. I recently changed the spark plugsand it took care of the problem for a few days. now when I go to start my car it will crank but wont turn over.it has started a couple times but then I will drive it and it will start whenever I let go of the gas but now it won't start at all

 

Check out cleaning the Intake Air Control (IAC) valve. The internet will have posts and video.

 

How many miles on the car? Did this happen all of a sudden or gradually got worse?

 

okay so I have already clean the IAC valve. In fact I touched it up yesterday with some carb cleaner, I even took the throttle position sensor off to clean behind it.and yes the problem has gradually been getting worse over time. in the beginning it was very much of a problem and now its getting worse and worse to the point where sometimes my car wont even start for 4 or 5 hours

 

the check engine light is on and it said there's a malfunction in the throttle position circuit. do you think the problem would be fixed if I bought a new one? And replaced it

 

What was the actual code that was listed?
Your TPS might be bad...