User discretion is advised. Buy a CHEVY SHOP MANUAL FOR YOUR YEAR CORVETTE! This entire passage can be seen with only the thermostat removed. C4 corvette cooling system diagram answers. 1995 Corvette Convertible. If it doesn't make it all the way back to the battery, it's a crap ground and testing it my way will reveal the problem. A common question asked among C4 Corvette owners is "why does my engine run so hot? C2 C3 C4 Corvette 1963-1996 Champion Cooling Performance Aluminum Radiators - 2 / 3 / 4 Row Selections. 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. If you prefer, you can connect both of the blue and green wires together.
Check the coolant level visually in the see thru coolant recovery tank whenever the hood is up. Place radiator on lower support. Torque to 25-35 ft. lbs.
I am on my phone so can't inspect the pictures too well. If it does not turn on, then your problem lies in the fan circuit between the relay and the fans. You might have some luck by squeezing the upper radiator hose until you can feel it full of water. Place a drain pan under the drain plug and then turn the radiator drain plug. 1990-1993 Corvettes have two relays: a primary and a secondary.
Blocked radiators generally occur on units that have accrued miles and not on new vehicles. COOLING SYSTEM CARE. This must be good because you say one fan does run. The fans have two speeds low and high. So although the LT1 intake still gets plenty hot, it does not vary with respect to coolant temperature nearly as much as a traditional intake manifold does. Remove A/C compressor. The cooling fans do not come on until the coolant temperature is way too hot". Some cars have as many as 4 or 5 temp sensors. Air in the cooling system. Remove the 5/16″ square recessed pipe plug between spark plugs one and three on the drivers side of the engine. Vacuum leaks in intake. Incorrect ignition timing. I would like to do a coolant flush. 05-08-2006 05:58 PM. Inspect the cooling system for leaks, and then remove the radiator cap and top off the coolant and the overflow tank as necessary.
Ve had good results with a 200F T-stat with the holes drilled (READ THE LINK) but many guys select a 180F t-stat. These hot temperatures promote reduced emissions and a cleaner burn. C4 corvette cooling system diagram 2007 x3. Disconnect negative battery cable at the battery. 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. If the high speed fans were turned "ON, " by the ECT, the PCM will switch the fans back to low speed when the temperature drops about 3°C (5°F). 1984 Corvettes will have the most noticeable improvement, as the factory cooling fan setting is 238 degrees. And all have provision to turn the fans on with A/c on.
The lower white over flow tank under the hood near the pass side head light (#638 below) is not directly involved in cooling, its simply the overflow puke tank that the radiator will siphon coolant from as the radiator cools and the coolant contracts while it sits. 2002 EBM convertible, Magnusson supercharger, cam, headers, etc. As such I can say with certainty that a 160 degree thermostat makes no difference in power. An operation check of the thermostat can be made by hanging the thermostat on a hook in a 33% glycol solution 22 degrees (Fahrenheit) above the temperature stamped on the thermostat valve. There are various cooling fan control switches available to turn the cooling fans on earlier than the factory ECM or PCM controlled settings. Push down on the plate on #1 relay and both fans. C4 corvette cooling problems. The engine was trashed and everything was burnt up. The cooling fan relays are mounted on the driver side of the radiator housing. Installation (Upper & Lower). Turn off the engine and let the car cool completely down (approximately 3 to 5 hours). 09-18-2011 01:01 AM.