How To Replace A Coolant Bypass Hose

This page contains information on repairing coolant hoses as well as How To Replace A Coolant Bypass Hose. Visit how to repair coolant hoses for additional how-to's and free downloadable e-books on coolant hose repair.

WE ALSO HAVE THESE FREE COOLANT HOSE REPAIR GUIDES AVAILABLE




Posted on

Mute the speaker Listen to this using a male or female voice M/F 

By Jack Hathcoat

Car engines need a way to equalize water pump pressure. The engine is cold when it first starts, but the water pump spins even though it isn't needed. Without a bypass route, the coolant would dead-head against a closed thermostat. Should the thermostat stick closed, the same problem would occur and the pump could cavitate, or form air pockets,...

1

Mute the speaker Listen to this using a male or female voice M/F Jack up the front of the car and lower it onto jack stands below the two front tires. Place a drain pan under the radiator drain valve. Loosen the valve and partially drain the radiator so the coolant level reaches just below the bypass hose.

2

Mute the speaker Listen to this using a male or female voice M/F Use a screwdriver to loosen the bypass hose clamps and remove the hose. In some cases, the bypass plumbing uses a pipe instead of a rubber hose. These pipes, or hoses, are located near the thermostat housing. Follow the upper radiator hose to the entry port on the engine. Usually the thermostat is located inside the engine, in a housing where the upper hose is attached. The bypass hose is below the housing. The bypass hose is always much smaller than the radiator hose.

3

Mute the speaker Listen to this using a male or female voice M/F Install a new hose and tighten the clamps. If the bypass circuit uses a pipe, inspect the old pipe. These normally rust and routine replacement is vital to maintain the integrity of the cooling system. Tighten the radiator drain valve.

4

Mute the speaker Listen to this using a male or female voice M/F Lower the car from the jack stands and refill the radiator with coolant. Start the vehicle. Allow it to reach operating temperature and check for coolant leaks. Shut off the engine and allow it to cool. Recheck the coolant level and refill as needed.

Share on Facebook Share on Twitter Email Gmail Yahoo! More...



Our Most Popular Article




More Coolant Hose Repair Information

 Air In Heater Core 4 Seasons
FREE Coolant Hose Repair E-Book
 Repair And Replace
FREE Coolant Hose Repair E-Book
 Section 12 Adjustment Repair And Replacement
FREE Coolant Hose Repair E-Book
 64lradiator Leaking Coolant Tsb 11 12 4
FREE Coolant Hose Repair E-Book
 E Type Cooling And Overheating
FREE Coolant Hose Repair E-Book
 Cooling System
FREE Coolant Hose Repair E-Book
 Aaa Make Sense Of Car Care Belts Amp Hoses
FREE Coolant Hose Repair E-Book
 2002 2008 Engine Cooling Amp Turbocharger System
FREE Coolant Hose Repair E-Book