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Where is the thermostat located on a 1991 Acura Legend with a 6 cylinder engine

Should be on the right side, where the lower radiator hose attaches to the engine. To get to this area you have to remove the air-filter box. Locate the elbow to which the lower hose attaches; it is attached with two hex bolts. Drain the coolant, then disconnect the lower hose from the elbow and take out both bolts, and the thermostat is revealed in its 'well'. You may have to use some force to get the old unit out. Pay careful note to how the thermostat is oriented -- there are two little 'ears' that line it up.

Be sure to buy a new gasket for the thermostat when you purchase the thermostat (yes, they should sell them together, but often they don't!) and install to match the one you removed. I advise cleaning out the 'well', the seating face against which the thermostat's valve acts, and the mating face of the elbow casting you removed. I also think it a good idea to blow things out with a good brake or carburetor cleaner, then wipe and let dry. Seat the thermostat carefully in the well - it goes in with the spring facing into the engine, but it really only fits one way - being sure the 'ears' are lined up and the gasket seats all the way into the 'well' with no particles or crud behind it. When reattaching the elbow, be careful not to pinch the gasket. I used a little form-a-gasket around the edge of the joint just to be sure I won't see a leak if the gasket doesn't seat quite right.

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โˆ™ 2008-07-23 03:00:21
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Q: Where is the thermostat located on a 1990 acura legend it is not where the radiator hose goes into the motor?
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