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To change the thermostat on a 1987 Chevy van, drain the radiator and locate the thermostat under the upper host assembly. Remove the bolts holding the thermostat in and replace it.
There are 3 different motors listed for the 87 E150 Ford van. The 4.9 the 5.0 and the 5.8 all have the thermostat located where the top radiator connects to the motor in the housing that the hose connects to. It will be under the inlet on top of the engine block.
underneathe the van by the oil filter.
simply find the top radiator hose and follow it down to the engine. That is where the thermostat housing is with the thermostat being located there.
diagram showing where the thermostat is located
The starter relay on a 1987 Toyota Van is on the passenger side of the engine compartment. It is part of a bank of relay switches screwed into the passenger side fender wall.
Where is the oxygen sensor code p1155 located in toyota mini van sienna?
Look where the upper radiator hose connects to the engine. There you will find the thermostat.
Follow the top radiator hose to the engine, the thermostat is at the end of it.
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The thermostat is under the housing where the lower radiator hose attaches to the engine.
It's either the thermostat or the heater controls.