got a niggly problem with my fez idling now. i went out to mr ford and bought a brand new idle speed control valve ( £95 by the way ) anyway the problems i was having was erratic idling like every other fez has probably had. i changed the inlet and throttle body gaskets and also replaced the fitting that the brake servo vacuum pipe goes into as it was missing it's 'o' ring.
now the problem i have is that when i blip the throttle the revs stay high ( bout 1500rpm) for a few seconds before dropping down to normal idle. i have removed the iscv and watched when the ignition is turned on, and the motion of the shaft and spring is a bit jerky, certainly not smooth. ( the car still runs if i cover the holes behind the iscv, idles slow but runs ) . i know the advice is usually clean the iscv but mine is brand spanking and behaves exactly the same as the old one did. could i have an electrical fault or a faulty sensor somewhere? the base idle seems fine and the base mixture was set only a few days ago but couldn't figure out this problem.the company who set the base idle said i haven't got any air leaks.any comments and advice welcome.

 

Mine does that occasionally, no idea why either.

Nick.

 

mine does the same

where did u get the iscv from cos when i went 2 my local fords was told they no longer have them in stock & to just try cleaning it with carb cleaner??


x x x

 

Damn some of you have ace looking standard turbos.... got any pics of yours louturbo?

Nick.

 

got it from ford mate, part no.s on this:



cost nearly a ton though!!

 

this can happen if the iscv has been disconnected (normally to set base idle) then reconnected & not left to idle for 10 mins before reving/driving (for ecu to reset its new idle values) have you cleaned out the throttle body inc the passage of the base idle screw? also whats the base idle set at? (700-750rpm). to check it yourself for air leaks (if in doubt!) spray carb cleaner around the inlet area. (ive always found they drive crap after having iscv disconnected, but get better after a couple of weeks, but this may just be on mine!)

 

mine has same problem have changed many sensors one by one and no luck.It's very fustrating coz it means my flamer kit don't work properly.

 

Flamer, oh dear!

 

cheers bud-weis

nick.king not got many pics gonna be taking some more very soon so keep an eye out in the pictures & video gallery, thanks for the interest

x x x