Question about 1992 Acura Legend

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I have repair my cooling sytem replaced from top to bottom new radiator,water pump, timebelt, thermostat, and new switch in radiator. but my fan are not running need help why???

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These cars have been known to have bad radiator fan relays/condensor fan relay. they're located on drivers side,in small relay box attached to radiatortop support bracket.that relay is also common with several others on car so you could `technically swap out with another identical relay from car for testing purposes.anyways.

Posted on Oct 15, 2010

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The problem of over-heating could be due to one or all of these defective parts:
(i) thermostat
(ii) radiator
(iii) fan relay
(iv) fan switch
(v) water temperature sensor.
In your case, I suspect that your radiator probably is clogged, so needing replacement.

To Replace the radiator:
a. allow the engine to cool.
b. place a suitable container under the radiator, and drain it out by turning backward the wing-nut under it.
c. open the radiator cap to allow atmospheric air to further push down the coolant.
d. with a piece of pliers, depress the top clamp holding the radiator hose. Do the same for the lower radiator hose.
e. remove from the bottom of the radiator and plug wth suitable bolts, the two transmission fluid rubber lines.
f. with a 10-mm socket and wrench remove the two bolts holding the radiator to the front frame.
g. depress the electrical plug at the bottom of the radiator. Remove its thermo switch at the bottom left hand side of the radiator. (replace with new if changing to new radiator) Also notice two rubber cups at bottom of radiator.
i, installation of the new radiator is reverse of removal. Refill radiator with new coolant.

To replace thermostat:
a. disconnect the negative terminal of the battery.
b. drain the coolant into a container, as
explanied above.
c. remove the upper radiator hose from the thermostat housing on the engine block.
d. remove the two bolts from the thermostat housing. Please note the way it was bolted to the engine. Clean its housing and seating areas.
e. fit a new o-ring to the thermostat, and replace with a new thermostat.
f. tighten its bolts to 14-12-foot pounds.
g. Replace the top and bottom hoses back.
i. refill with new coolant.

To replace the fan relays:
a. open the hood.
b. disconnect the negative battery terminal.
c. locate the meduim-size black plastic box on the driver's side fender. This is where the fan relays are. Look inside the cover of the medium-size plastic box to see the fan relay positions.
d. gently and firmly pull out each fan relay. Replace with new ones as needed.

To replace the water temperature sensor:
a. this is bolted to the top of thermostat housing.
b. unplug it from it location.
c. use a 14-mm deep socket to remove the temperature sensor. Replacement is reverse of removal.

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