Cooling and ventilation system specifications (Opel Vectra A)

System type - Sealed (pressure above atmospheric), with an expansion tank. The cooling system pump is driven by a toothed drive belt.

Coolant

Type/Specification (all models) — See point "Lubricants and fluids" in the Chapter "Weekly checks"

Filling volume - See Section 1 Specifications

Thermostat

• It's starting to open up (all models) at -92°C
• Fully open (all models) at - 107°C
• Operating temperature (approximately) — 80°C

Expansion tank cap

• Valve response pressure (all models) — 1.20-1.35 bar
• Boiling point - 125°C

Cooling fan switch

• Turns on (all models) at - 100°C
• Turns off (all models) at -95°C

Tightening torques, Nm

Coolant pump bolts:

• Models 1.4 and 1.6 l (except C16 NZ2) (M6) — 8
• Models C16 NZ2, 1.8 and 2.0 l (M8) - 25

Oil lines to the radiator - 22

Outlet pipe to thermostat housing

• models C16 NZ2, 1.8 and 2.0 l - 8

Coolant Temperature Gauge Sensor - 10

Engine Temperature Warning Light Sensor - 11

Thermostat housing to cylinder head:

• Models 1.4 and 1.6 l (except C16 NZ2) — 10
• Models C16 NZ2, 1.8 and 2.0 l - 15