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Heating AC and Engine Cooling
EGR Systems
Chevy Blazer S-10
Ford Expedition XLT

Where is the thermostat and EGR valve on a 1991 Silverado?


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Wiki User
2005-01-25 05:18:03
2005-01-25 05:18:03

The thermstat is in the housing at the motor end of the upper rad hose. Two bolts hold it on. The EGR is on top of the intake manifold near the throttle body. It has a vacuum hose and two bolts. If I remember correctly the bolt are inverted torks. Which require a special tool to remove. Use a pair of locking plyers to remove, then replace bolts with standard ones.

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It is in the front of the engine, to the right of the thermostat housing.

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It is right beside of the thermostat housing, Right side of it. 2 bolts hold it on.

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No,Its has to do with the EGR valve

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The 1991 Geo Metro EGR valve can be located on the air cleaner housing. The valve will be on the back of the housing.

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The EGR valve for a Honda EX 1991 is at the top of the engine. It is at the front, just to the left of center.


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