Thread: 00' GS revs on its own

Originally Posted by Dee23

Anybody experience idle rpm just raising on its own? I personally never seen it happen other than cold mornings on cold start in open loop, which then settles back down as it should

My car was doing that and it ended up being the lower intake manifold gaskets. So, have a look at your lower intake manifold. Look in the ducks and see if you have water in there or something similar to these.