2003 Peugeot 206 RAVES

I had the engine warning light flashing and beeping the rave would fluctuate from 800 to 1000 on check with the peugeot dealer he advise me that the injectors and the step motor need to be replaced which was done. Now the raves go upto 3000 on first start and on engine running on idle it still fluctuates from 800 to 1000 on slowing down the car hessitate as thou it would switch off on slight acceration the rave shoot up to 3000.

Please advise not other fualts were diagnoised with the Diag 2000 meter at the peugeot dealer not codes were shown just "Permanent fault injector supply"

Please advise