I've got an Escort Gti (1800 Zetec silvertop) which I got off a mate. When I got it, the car idled out of control. I've since changed the Idle Control Valve which seems to have sorted out that problem, only now its got a different issue.
When I first start the car it tends to stall if your not keeping up with the idling, after I drive the car for about 3 mins the car warms up and the issue just seems to dissappear.
Ive been told that the best thing to do is to get the ECU reset on a dianostics machine. Is this right or could there be another issue?

Thanks for looking

Slik

 

Ecu reset on a machine ?, stop listening to whoever told you that!!
To reset the ecu simply pull the violet 3 amp fuse from the fusebox marked KAM, keep alive memory for a few minutes!
Anyway do the usual looking for air leaks, as sounds to be running lean when cold, the "T" piece pipe at the rear lower corner of the head on right hand side as you face engine is a fave pipe to split, collapse bugger up can cause this issue.
Other things you can do is clean the MAF with carb cleaner, the hot wires inside may be coated in general crap making the situation worse.
tabetha

 

Thanks for your advice. Im gonna have a look at what you said and give it a try. Sounds like you actually know what your on about lol. Quite rare to find these days lol. Thanks again
Slik