0
Drain about 1 gallon of coolant from radiator Remove housing at the engine end of the upper radiator hose Make note how thermostat is installed in housing Clean both surfaces well Install new thermostat and gasket Re-fill coolant slowly to prevent an "airlock" Start engine and look for leaks Run engine up to normal operating temperature with heater on Re-check coolant level
Wiki User
∙ 16y ago
Add your answer:
Earn +20 pts
What type of gear oil is used on a 1991 Chevy Astro?
80w90
What is the firing order on a 1991 Chevy Astro?
165432 #1 cylinder is left front
How do you replace the thermostat located on a 1991 Chevy Cavalier?
To replace the thermostat on a 91 Cavalier you need to drain the radiator. Remove the top radiator hose and water inlet. Remove the thermostat from under the inlet. Install the new thermostat and reinstall the inlet and hose. Fill the radiator with fresh antifreeze.
How do you replace a serpentine belt in a 1991 Chevy truck?
How to remove and install the serpentine belt on 1991 Chevy Blazer with AC?
Can you install a 4.3l v6 Chevy engine in a 1991 Chevy s-10 blazer?
yes you can
Why would a 1991 Chevy astro van start but when using the brakes it dies and won't restart?
Timing belt.
Location of the bleeder screw on a 1991 Chevy Astro minivan?
On the wheel cylinder. Assuming you meant brake bleeder.
How do you install shims on 1991 Chevy s 10 starter?
Do not install the shims. Your starter should work fine.
Why would a 1991 chevy. Camaro get hot after replacing the t-stat and the coolant in it?
Did you bleed all air from the system? Did you check the operation of the water pump? Did you flush the system thoroughly? Did you accidentally install the thermostat upside down?
Where is the coolant fan switch located on a 1991 Chevy lumina 3.1 liter?
at or near the thermostat housing
How do you replace the thermostat on a 1991 Chevy 1500 silverado truck?
FIRST make sure engine is cold. Then remover upper radiator hose from thermostat housing. Now remove the 2 bolts that hold the housing to the engine then remiove thermostat and clean gasket off of housing and engine, Install new thermostat with spring down and gasket then tighten the 2 bolts evenly together until tight. Install hose and fill with coolant. FIRST DRAIN COOLANT
Where is the temperature sensor in 1991 Chevy S10?
If it has a 4.3L engine the temp sensor is located next to the thermostat housing.
