RPM's acting stupid

[mustangsquared]

When my car is cold my idel RPM's are 900 when hot it idels at 1200 RPM.
Any idea what is causing this? I check the TB and TPS and timing all good.
Thanks for the help in advance.

 

[ironheart1]

Have you checked for a vacuum leak yet? I had a similar problem a while back and it ended up being that I had a vacuum leak. I'm learning quickly that these cars often have idle problems, and that there is a plethora of possibilities for why you may be having that issue. If you can't find a vacuum leak, try searching these forums for an answer, I'm sure someone has covered it.

 

[mustangsquared]

ttt