My 1994 Toyota Camry's rpm's go up and down when it's in park and it whistles,...

[crtswallace08]

...what do i do? for the last two days when i start my car up the rpms shoot up to about 2,000 rpms and back down to about 1,500 and i don't know what to do about it and it was whistling when i started it up but my step dad looked at it and now it doesn't anymore i don't know whats wrong can someone help me out. my step dad also thinks it could be my head gasket but i don't know.

 

[garyo]

check for a vacuum hose leak. as hoses will get old and break or leak.