Remove the thermostat and rinse through the engine with a garden hose, being sure to capture all of the contaminated water so it can be discarded correctly. Radiator cooling fans were not designed for continuous use and they will fail prematurely. L98's have no bleeder, shouldn't need one.
To avoid being burned, do not remove the radiator cap (surge tank cap) while the engine is hot. The stock thermostat in an LT1 is 180 degrees, the only reason the car runs so hot is that the computer controlled fans allow it to do so. Do the steps in order and use the negative battery terminal for your connection when I specify to. Illustration by Chris Petris.
'84 has temp switch for fan only, no ECM control; '85 has ECM control but temp switch acts as over ride backup direct to fan. Later corvette 1996. The proper coolant concentration is 50 percent coolant, 50 percent distilled water or de-ionized water. Air in the cooling system. Do not pour used coolant down a drain. I run into this frequently, and theres several sources or causes for an engine to run hotter than you might want it to, and cures, obviously you'll need to check fluid levels and your ignition timing. Locate the dark green/white striped wire at the relay connector.
Fluidyne High Performance DB30901 - Fluidyne Oil Cooler with Fan Kits. The coolant temp sensor is located on the Pass side head between # 6 and 8 plugs. C4 corvette cooling system diagram on 2005 toyota sequoia sequoia limited. It is very possible to have a failed sensor for the ecu or a damaged harness or unplugged sensor and have the ecu read -40f for coolant temp. THE DIAGRAM ABOVE HAS THE CORRECT WIRE COLORS. Use a 50/50 mixture of high-quality ethylene glycol anti-freeze and water when adding coolant. Place a 1/8″ bead of RTV sealant (or equivalent) all around the thermostat housing sealing surface on the intake manifold.
TRANSMISSION COOLER. C2 C3 C4 C5 C6 C7 C8 Corvette 1963-2020+ Proflow Universal Electric Cooling Fan, Straight Blade, Puller - Size Options. OVERHEATING AND/OR NOISE. RE: Air in the cooling system. Fill cooling system as prevously outlined. The Right Way to Change Coolant in Your C4 Corvette. The heads are the most complex pieces as far as coolant passages are concerned. Heres a bit of info I found posted elseware. " A loose belt that slips may prevent the water pump from circulating coolant fast enough.
Both run at the same time. Both fans at high speed. Disconnect negative battery cable at the battery. When the engine coolant temperature drops below 185 degrees, the cooling fan is turned off. Low oil levels in engine. Radiators, Fans, Shrouds, and Cooling. When high fans are commanded they are wired in parallel. When the thermostat opens the coolant in the filling funnel will become hot.
Start the engine and allow it to run, with the radiator cap removed, until the upper radiator hoses become hot. Remove the lower A/C compressor mounting bolt. When minimum cooling is required, the PCM energizes cooling fan relay #1 and both fans operate at low speed, since the fans are connected in series through cooling fan relay #3, and cooling fan relay #2 is open.