C4 Corvette Cooling System Diagram

Torque remaining bolts to 18-23 ft. lbs. Do the steps in order and use the negative battery terminal for your connection when I specify to. Replace hoses whenever cracked, swollen or otherwise deteriorated. Confirm continuity between side A of the left cooling fan connector and side B of the right cooling fanconnector AND the socket for pin 87 for relay #2. 1990-1996 COOLANT SWITCH INSTALLATION. BTW you may find freeze plugs that look like this on blocks and cylinder heads, especially from engine rebuilder machine shops, the "exterior outside BUTTONs are made from a very special low melt metal like bismuth thats specifically designed too melt and distort if the blocks coolant temp reaches about 250-260F indicating and proving beyond question that you over heated the engine and voided your warranty. C4 corvette cooling system diagram parts. If it does not turn on, then your problem lies in the fan circuit between the relay and the fans.

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C4 Corvette Cooling System Diagram Answers

Top off recovery tank to proper level. If you used the miniram, does that require a remote thermostat housing? From this experiment I found that there was absolutely no reduction in power output until engine temperature exceeded 230 degrees, a condition that will never occur as long as there is sufficient airflow over the radiator. With the engine idling, add coolant to the radiator until the fluid level reaches the bottom of the filler neck. "High fans" is commanded by the ECM when either: certain DTCs are set, ECT is above 228°F, engine oil temp is above 277°F or A/C head pressure is above 225-psi. C4 corvette cooling system diagram answers. Maintain cooling system freeze protection at -37 degrees Celsius (-34 degrees Fahrenheit) to ensure protection against corrosion and loss of coolant from boiling even when freezing temperatures are not expected. Splice the new section of either the blue or green wire to the main fan dark green/white striped wire.

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Do not press down while rotating). Loves302Chevy posted these diagrams that will be helpful. Clean frontal area of the radiator core and the air conditioning condenser. What you see on the dash is not always what the ECM is seeing. The relay socket and ground the Dark Green wire. Cold spots in the radiator indicate clogged sections. I don, t remember, where I purchased most of the oil/trans fluid coolers Ive used, but I've purchased and installed several oil and trans fluid coolers. Your engine may not be overheating at all. 07-21-2007 11:08 AM. Open radiator drain valve and block drain plugs to drain coolant. C4 corvette cooling system diagram download. Slipping Belt - Check belt tension and condition. The PCM sends a ground signal to the fan relay when it sees the desired temperature from a sensor to run the fan has been met.

C4 Corvette Cooling System Diagram Download

This will not affect engine operation or cause any problem. The question then becomes, why does the engine need to run cooler? The result is an engine that is far less sensitive to it's own temperature as far as horsepower is concerned. Another scenario would be the use of a 195 degree thermostat with the 244455 switch. At this point, water may be burbling out of the radiator. Air in the cooling system. These sensors are located in the center on both sides of the engine block just above the oil pan. BEWARE OF HOT COOLANT!! This code will not will not affect engine performance in any way. Check coolant for proper level and freeze protection. Lower temperatures will work at the expense of fuel mileage. 1995 Corvette Convertible. You can use AMSOIL cooling system treatment, which provides corrosion and rust protection for modern aluminum and cast-iron cooling systems.

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Remove upper fan shroud. The radiator cap should not be removed to check coolant level. When coolant runs out of the bleeders there should not be any air left in these areas. Blocked or restricted air flow, missing duct work.

As the thermostat begins to open, air in the system will begin to bleed itself the thermostat opens, all the air should bleed out within 5 minutes. As such I can say with certainty that a 160 degree thermostat makes no difference in power. If none are found, look in the coolant passages for blockage and probe all the passages that are accessible. Pink, Dark Blue, White and 2 Black wires. It's best to raise the vehicle and make sure that it is level for getting the coolant out. Secondary coolant fan 40 amp Maxifuse located under the hood. Cooling off that c4 corvette. Defective sensors or connections too sensors. Monitor the coolant temperature during this time and make sure not to overheat the vehicle.