Rpms going up and down???

[Angry7M]

Since yesterday the rpm's on my car starting going up and down at idle and while im driving and I let off the gas. Does anyone know what can cause this??? No codes are present, and my TPS is like a year old. Can hard wires on the CPS cause this??? Or a ISC???

 

[drewsh666]

could be a bad vacum line

 

[A-to-the-J]

you could have blown an intercooler hose/coupler

 

[ATL88Supra]

icv, blown vac line blown intercooler line, leak in the throttle body

 

[Angry7M]

Ill have to check for leaks then, I hope thats my problem. And this problem just started when I was about to start my 5 speed swap. Damn problemas. :3d_frown: :cry: