daewoo leganza 1998 2000cc auto missing at 1500 to 1800 rpm intermittent fault

[jojo1234]

Hi can somebody help please I got a Daewoo Leganza 2ltr auto
When pulling away it sometimes stutters as if no fuel and then clears itself until you slow down and start pulling away again.(this does not happen all the time its between 1500 and 1800 rpm)
I’ve had the codes read and no faults where present, new leads, plugs, fuel filter and its still happening. Anyone got any ideas what to try next

[georgealderslade]

locate and blank off the egr valve with a metal plate this is a cheap test the egr valves seam to open too early or stick on many Daewoos
let us know if that works or not

[Merlin672]

Yep, this is definitely a case of an air leak somewhere on the induction side. Try gentle acceleration with an assistant listening for a whistling sound. I did a petrol 2l manual model some time back, leak was in the carbon canister vacuum hose (black with single green stripe).