Hi guys I have a problem with my honda. I'm new here and I was hoping you guys might be able to help me...? I have an 85 honda civic crx si 1.5 liter, It had been sitting for a while but whenever I go to start it and it will idle and then all of the sudden after idleing for a little it will go all the way to 5,000 rpms and rev up and down in between 4 to 5,000 rpms.........????? so if anyone has any ideas what it could be please let me know. Thanks Austin

 

IACV or TPS went bad