Hi hope someone can help caddy 1.9 bls engine put asr and glow plug light on 3 months ago changed crankshaft sensor and has been ok when going down motorway last week felt a shudder then same lights came on no loss of power and kept going fault codes came up concerning manifold flap so I checked operation and it was in op so I changed it and it works however on start up engine light comes on and fault code 008214 and does not clear no loss of power starts ok and stops ok however the other day before I changed flap it did come up with p0122 fault sometimes when the 008214 is cleared it takes the engine light off but remains on diagnostic tool