idle problem

SON240sx Automotive
1

have a stock kade that idles fine when cold but when warm will jump too
1800 - 2000 rpms for what ever reason. it will stay there for a while and
randomly drop back to normal 800-900 rpms for a little while then jump back
up again. again the engine is bone stock. the engine runs and revs fine but
this problem is annoying not to mention burning up my gas!! any help would
be welcome.

peace

2

i was reading on other forums that the most likely problem is with the egr and carbon build up inside it. anyone here experiance this as well?

peace