David Coupar Posted January 27 Share Posted January 27 My son has a 2015 fiesta 1 ltr eccoboost. It has developed a fault with the vacum and brake pedal. Engine is rough and foot pedal is solid any suggestions 1 Quote Link to comment Share on other sites More sharing options...
dezwez Posted January 27 Share Posted January 27 The brake servo faulty maybe Quote Link to comment Share on other sites More sharing options...
JW1982 Posted January 27 Share Posted January 27 On a 1.0 ECOboost it is more likely that the camshaft driven vacuum pump has failed. The vacuum pump on these engines is well known to fail in 2 different ways: 1: The integrated plastic check valve is broken. The check valve is part of the pump and not available as a separate part from Ford. There are however aftermarket part available to fix this problem. 2: The vacuum pump developed mechanical damage and clogged the check valve with debris. This is an early sign of oil starvation caused by wetbelt particles blocking the oil pump inlet. 2 Quote Link to comment Share on other sites More sharing options...
anon Posted January 27 Share Posted January 27 Thanks JW. That is worth knowing. Quote Link to comment Share on other sites More sharing options...
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