I have had a quick look in these forums for this but didn't find anything to help

So, my problem is when the car is cold or been off for a short while, when started the idle is very irratic! Its up and down and sometimes it stalls. It used to start 1st time everytime and now it don't start sometimes, but on the 2nd flick of the key it will start When its steady it revs about 1500rpm (don't know if that's any good?). Its a pain in the **** because when you want to pull out of a junction, you have to give it some wellie and hope it don't stall

Anyone with any reasons as to why this could be happening? Please

 

Right i've got the same problem (93wrx) it has been checked for fault codes and none were found the next step is checking the coil packs and plugs for me which is being done this Friday.

Although mine does it when it's warmed up it's fine.

 

snap when cold fine when warm,very embarrasing,plugs are next for me done the maf,coolant temp sensor and o2 sensor

 

You see, when mine is warm its fine
Recently checked the coil packs and changed the plugs. The car was still running fine after they were done. Could it be anything to do with the idle screw on the top of the engine? Would that need a little twist I wonder!

 

All sorted now

Was a huge split in the air intake pipe

 

can i ask where?wasit after the maf?

 

It was and before where the dv enters.