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Home >> Pontiac >> 1988 >> Fiero Formula, Automatic >> Repair and Diagnosis >> Engine Mechanical >> Engine Cooling Fan >> Maintenance >> Radiator Cap

Radiator Cap

Visually inspect radiator cap, then dip cap in water and connect to tester. Pump tester to bring pressure to upper limit of cap specifications. If cap fails to hold pressure within specifications, replace cap.

Fig 1: Testing Radiator Pressure Cap
G73541Courtesy of GENERAL MOTORS CORP.
NOTE: Wet cap gasket before testing.