Honda Prelude 1993 Service Manual page 246

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Replace the thermostat if it is open at room temperature,

To test a closed thermostat;

1. Suspend the the.mostat in a container of wate. as

2. Heat the water and check the temperature with a

thermometer. Check the temperature at which the

thermostat first opens. and at which it is fully open.

CAUTION: Do not l6t the thelmometor touch tho

bottom of hot containor.

Measure lift height ot the thermostat when fullv

STANDARD THERMOSTAT

Lift h.ight: above 8.0 mm {O.31 in.}

Stans oponing: 169 - 176oF {76-8OoCl

Fully open: 194oF (9OoC)

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