ok here goes,, i have my escort rs turbo converted to ofab..
my problem is when i blip the throttle the Revs raises and holds for a few seconds before it idles down again..

i've changed the idle speed control valve. and it still does the same..

i took out the chip and it still does the same..

any1 any ideas?? regards dave

 

my throttle cable was shagged.changed it then it went fine dunno though could be anythin,checked your idle screw?

 

yeah checked it all, its not the throttle cable as its releasing fine, its really annoying me!!! also my headgaskets blown today!!

 

As i said on your other post have u set the base idle?

 

Incorrect mixture could cause this or possibly an air leak.