I installed a cut off switch last night to help a hot start problem I had and after doing so it worked great, I still had a wierd idle between 1000 and 1500, then all the sudden it went to 4000 and climbed to 7000 rpm, I reset the ECU and checked my intake for leaks but I have no clue why its stuck so high, linkage seem o.k., Just wondering if anyone has any ideas.

Thanks Eric

 

idle that high...seems that linkage is sticking.

 

Dashpot maybe

 

Post this question in the appropriate generation-specific forum. It also helps to know which generation RX-7 you have.