my 96 RA has recently started idling very low so that when the engine is cold it starts fine but cuts out as soon as i take my foot off the accelerator. gets a bit better when the engine warms up but still a bit too low idle. Any ideas what can cause this? Can you just "turn up" the idle with an Apexi FC with a controller? thanks!!

 

My evo 8 did the exact same thing, the boost controller was faulty & i bought a new one & got a remap which solved it & never did it again & was running so much better

 

mine runs really well at the moment, and was only remapped last year, it's just the idle that seems too low. read up a bit on the idle control valve, but it seems that the revs are too high when that's faulty...

 

Could be a vac leak!!!!!

 

you could check and clean the throttle body.Had this problem and whipped the tb off and give it a good clean with carb cleaner . Ran so much better afterwards

 

could be the TPS as well

 

sorry, TPS?

 

Throttle position sensor.