i have a sc300 and yesterday i changed my coolant.

ever since my idle has been a really fast pulsing idle the idle stays constant. i think i might have fried something when i sprayed my engine bay with a hose.

could it be the icv or the tps?

 

Oh boy, here we go again.

People, you need to STOP DOING THIS!!

There are numerous things that it could be, fortunately there have been a number of people here who made the same (stupid) mistake and have posted threads for their troubleshooting persuits. I suggest you do a bit of searching and you should find enough info to get you started on eliminating the most likely suspects. G/L and please spread the word that this is never a good idea.