Hi Guys, Sorry if this is a bit bit long but need your expertise. Got a 2003 1.8 Vectra, 77000 miles. Had error codes including MAF Sensor and Fuel Trim, P0100 Mass or Volume Air Flow Circuit Malfunction
P0170 Fuel Trim Malfunction (Bank 1)
Fitted new MAF Sensor and all codes cleared. Before I fitted the new MAF Sensor and I rev'd the engine it was fine, rev counter went up and straight back to 700 ish now if I rev it comes back down to under 500 nearly cuts out goes back up to over 1500 and then comes back to 700 ish but flutters a bit. This morning went to go and it was like hitting a brick wall and then it went like a masseratti, well nearly. No error codes showing. Engine ticks over smoothly and will pick up speed nicely when moving. Ideas and suggestions gratefully received and appreciated.