When idle or in park idle will go from 800-1000 and then back down to 800 again... stay the same the. 5 seconds later go up then Back down to 800

Anything I can look for? Car starts and drives fantastic. Maybe a sensor issue?


Thanks!

 

do a search on idle relearn

 

my car does the something similar, but when i put it in drive it idles at a lower RPM.

 

normal idle is 650 +- 50