Question 1

Coolant leaks from the thermostat housing (1.4 Turbo)

Accepted Answer

The plastic thermostat housing on the 1.4 Turbo commonly cracks or leaks at its seals, giving a slowly dropping coolant level, a sweet smell after driving and, if ignored, overheating.

Question 2

Split PCV diaphragm in the cam cover (1.4 Turbo)

Accepted Answer

The crankcase breather (PCV) diaphragm built into the cam cover tears with age, causing a whistle at idle, rough running, lean codes (P0171) and sometimes oil being drawn into the inlet. The diaphragm is part of the cam cover, so the whole cover is usually replaced.

Question 3

Turbo coolant pipe leaks (1.4 Turbo)

Accepted Answer

The coolant feed and return pipes to the turbocharger on the 1.4 Turbo commonly leak at their seals, causing a slow loss of coolant and a coolant smell after driving.

Vauxhall AstraAstra J

Known issues and common problems

Vauxhall AstraAstra J

Known issues and common problems

Coolant leaks from the thermostat housing (1.4 Turbo)at 100000 km · 1 solutionsMedium

Split PCV diaphragm in the cam cover (1.4 Turbo)at 110000 km · 1 solutionsMedium

Turbo coolant pipe leaks (1.4 Turbo)at 100000 km · 1 solutionsMedium