95 neon sohc it has been idling a while at 1500 ROMs and I keep throwing a p0505 code I checked all my words for the iacv and everything checks out clean tb and new sensor now my car threw its idle up to 3k rpmscome and when I push the gas it drops a bit and but it still fluactuates and now it is still throw the IAC code now I got a bad tps code or circuit bad coolant temp circuit out of range and bad iacv and target idle not reached is there anyway a vacuum leak can cause all of this?

 

Yes. At least you have a one piece intake manifold. Throttle body gasket or the line from the brake booster to the to the intake manifold.

 

Check for vacume leaks around the throttle body. There is a plastic tube running from the throttle body to the evap purge solenoid on the passenger side. Hose can rub and get a hole or the rubber couplings can crack.

You can spray with carb/brake cleaner and listen for idle changes to see if there are leaks. If there are no leaks there may be a problem with the IAC sensor. Carbon and crap gets in there and you may be able to clean it. Pull entire throttle body off and clean it good. Can also check the wiring going to the AIC

 

Checked hoses did smoke test checked all wiring everything checks out lol new sensors and gaskets as well. So I ordered new pcm so hopefully that's it