Cooling Off That C4 Corvette

July 5, 2024, 11:35 am

Install the thermostat while sealant material (RTV sealant or equivalent) is still wet. The key to C4 electrical is the checking for good solid low ohm resistance GROUNDS. C4 Corvette radiators, fans, shrouds and cooling system parts are new and affordably priced at Modern Gen Auto. There's a label under the hood of your vehicle that will give you the coolant requirements and the filling quantity. This additive can also reduce coolant temperatures by as much as 20 degrees Fahrenheit. C4 corvette cooling system diagram for a 2010 audi q5 3 2. You might have some luck by squeezing the upper radiator hose until you can feel it full of water. 1994-1996 Corvettes: Locate the relays with four wires (one relay has five wires for half speed operation). 09-18-2011 01:01 AM.

C4 Corvette Cooling System Diagram Answers

Wait until any residual pressure (indicated by a hissing sound) is relieved. Remove the rear A/C compressor braces. If you are flushing the system I prefer this procedure: Remove the surge tank and flush the surge tank with clean, drinkable water.

THE DIAGRAM ABOVE HAS THE CORRECT WIRE COLORS. As always read carefully, and measure accurately, remembering you must be leaving room for the hot oil or trans fluid hose and connections. Air in the cooling system. Radiators, Fans, Shrouds, and Cooling. It's possible for the cooling system to release scalding fluid and steam if radiator cap is removed while the engine and cooling system are still hot and under pressure. The PCM will command low speed fans "ON" when Engine Coolant Temperature (ECT) is above 108°C (226°F). Components which may be prone to this condition are the cylinder heads, the water pump, the engine block, the thermostat housing and the inlet manifold.

C4 Corvette Cooling Problems

These charts are for the 1985-89 vette cooling fans. Pink, Dark Blue, White and 2 Black wires. Route the cooling fan harness dark green or blue wire to the main fan relay (near the battery). L98's have no bleeder, shouldn't need one. C4 corvette cooling system diagram 6 0 lq9 engine. Add sufficient ethylene glycol coolant. If this were the case then your fans would never be commanded on even though their circuits were intact. These are just a few of the problems that can be caused from dirty coolant.

With clean sealing surfaces on both block and water pump, install the water pump to the engine block with new gaskets and retain with the attaching bolts. Later corvette 1996. You would certainly not be the first or last guy to buy a cooler that will not fit in the space you though it would, due to the connections and hoses required or forgetting about the thickness or lack of easy access. This can be done by probing the engine with a sounding bar (or large screwdriver. I believe there is the smallest of leaks in the radiater or heater core. C4 corvette cooling problems. 1996 Corvettes will have an SES light illuminate when the fan switch is installed due to the PCM noticing the fan operating when it should not be. Headgaskets can leak into the combustion into coolant passages and never show up in oil since it is bleeding compression. The result is an engine that is far less sensitive to it's own temperature as far as horsepower is concerned. READ THRU THIS THREAD AND SUB LINKS.

C4 Corvette Cooling System Diagram With Dpf

To remove the knock sensors you will need a 7/8-inch socket. Again, this should be done when the vehicle is completely cooled down. Have a Corvette that sees track time on a regular basis? When the thermostat opens the coolant in the filling funnel will become hot. 2002 EBM convertible, Magnusson supercharger, cam, headers, etc. Cooling off that c4 corvette. Never had to bleed mine (86 L98). I am on my phone so can't inspect the pictures too well. Certain Diagnostic Trouble Codes (DTCs) set. When the engine is cold, the coolant level should be near the "ADD" line on the reservoir. That would be great. Drain the coolant at the radiator petcock.

Pink, Dark Blue, Red and a White wire. Next on the order of useless LT1 items is the 160 degree hermostat. To avoid being burned, do not remove the radiator cap (surge tank cap) while the engine is hot. Please take a look at the photos below and let me know what you think. But I'll certainly check into it. Both run at the same time. Vacuum leaks in intake. This must be good because you say one fan does run. This would be a good time to replace the thermostat. Remove recovery cap leaving loses in place. Wiring Instructions: 1985-1989 B4P Option equipped Corvettes. If replacement of cap is required, use the proper cap specified.

C4 Corvette Cooling System Diagram For A 2010 Audi Q5 3 2

Remove the thermostat and place in a 33% glycol solution 10 degrees (Fahrenheit) below temperature indicated on the valve. Ethylene glycol antifreeze is a very toxic chemical. If you saw 260 on the digital display and the coolant boiled over, obviously the car was way overheating. Open radiator drain valve and block drain plugs to drain coolant.

The heater hoses may vibrate and thump. Draining and Filling the Cooling System. Another scenario would be the use of a 195 degree thermostat with the 244455 switch. Verifying at the negative battery terminal will ensure you're circuit is making a good connection to the chassis ground. I know for sure there is no water in the oil. If those are correct it may be a sensor or tuning issue so verify sensor outputs with a good multi meter. Lower Radiator Hose Collapsing. Sometimes things "stick" to the threads and just rip out and totally wreck the threads. Submerge the valve completely and agitate the solution thoroughly. Allow system to drain completely and then close the radiator drain valve tightly, and install block drain plugs.

C4 Corvette Cooling System Diagram 6 0 Lq9 Engine

Let the vehicle completely cool down before starting this process. 1984 Corvettes will have the most noticeable improvement, as the factory cooling fan setting is 238 degrees. One factor many guys overlook is that the SENSORS and RELAYS controlling the fans and the VOLTAGE the ALTERNATOR supply's to the car have a huge effect on both when the fans kick on and how fast they spin, which in turn has a major effect on the low speed air flow thru the radiator. This is particularly damaging to the cooling system as the gases combine with the water to form acids which are harmful to the radiator and the engine.

1990-1993 Corvettes will have the dark green or blue wire spliced into the fan relay with the dark green/white striped wire for primary fan control. Disconnect the fuel inlet and return lines. Continuity tests: 1. If this does not work you may need to remove the lower radiator hose. Don't forget the 242135 thermostat gasket to properly seal the thermostat housing.

Secondary cooling fan is on the passenger side. One or both Fans Not Working correctly. After all hissing ceases, press down on the cap while continuing to rotate counter-clockwise. Just a quick recap: back last year my father and I undertook a rebuild on a 90 Corvette.

Hope not, that could mean headgasket. As mentioned you could use a fuse power tap,, but.. Ive generally just found a source for a switched power with a multi meter, or tapped off the battery terminal and added a manual pends on what I was trying to accomplish, Ive generally run 10 ga wire to a relay is any significant amp loads were anticipated, and soldered in a relay and fuse as required. Some common problems from contaminated coolant can range from the radiator or heater core becoming partly stopped up from the rust, head gasket problems from the system not cooling properly, or the freeze plugs rusting out and causing a leak. The left fan is still powered through cooling fan relay #1, but is now grounded through cooling fan relay #3. '86- '89 as stated above. Remove fan wires from fan and shroud. Confirm 12v between the socket for pin 30 and the negative battery terminal on relay sockets 1 and 2. The 1984 Corvette has a standalone cooling fan control circuit. Pro tip before starting - Label your relays Relay 1, Relay 2, and Relay 3 according to the wiring diagram (your first post) and what your physical relays represent. Is there any kind of air bleeder in the system? When high fans are commanded they are wired in parallel. Also monitor the filling funnel level closely. Also, overheating really stresses cooling system parts such as radiator hoses, heater hoses, belts, radiator caps and so forth.

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. Wide temperature range from - 58 to 1832 °F (-50 to 1000°C). Tell-take signs of grayish white or rusty color, or dye stains from anti-freeze at joints in cooling system are almost always sure signs of small leaks even though there appears to be no damage.

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