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86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

1987 toyota pickup 22r coolant line

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Old Jan 14, 2014 | 05:34 PM
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koda8706's Avatar
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From: olive branch ms
1987 toyota pickup 22r coolant line

There is a coolant line that runs down the passenger side of the engine and goes to the backside of the water pump its a rreturn line and mine is not used there is a bolt in a piece of hose hose blocking it off does anyone know what it's for
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Old Feb 3, 2014 | 09:35 AM
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From: Haddam, Connecticut
I'm pretty sure that is your secondary loop for the heater. It allows coolant to circulate through the heater core before the thermostat opens. Does the heat in your truck work?
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Old Feb 3, 2014 | 09:45 AM
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From: olive branch ms
Ueah heat works great
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Old Feb 3, 2014 | 01:46 PM
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Pics are always helpful
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