Corolla Sport Coupe L4-1587cc 1.6L DOHC (4A-F) (1988)
(d) Check that the valve spring is tight when the thermostat is fully closed.
If necessary, replace the thermostat.
INSTALLATION OF THERMOSTAT
1. PLACE THERMOSTAT IN WATER INLET HOUSING
Install a new gasket to the thermostat and align the jiggle valve of the thermostat as shown in the water inlet housing
2. INSTALL WATER INLET HOUSING COVER
Install the water inlet housing cover with the two nuts.
3. REFILL WITH COOLANT
4. START ENGINE AND CHECK FOR LEAKS