Engine Cooling

Coolant Pressure Switch

Coolant Pressure Switch

Would someone care to describe the operation of the coolant pressure switch ???
Chrs Ford

The coolant pressure switch (mounted in a line just forward of the coolant tank) appears to be connected in parallel with the coolant level switch. If you have low coolant and no pressure, you get a warning light. If you get low coolant while you have system pressure, no warning light. It apparently allow the coolant level to be a bit lower before you get a warning while you are driving.

Wally Plumley
928 Specialists

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