Can anyone help me with this problem I have. My JDM Turbo II is overheating, the gauge which works was reading top hot, the reservoir was bubbling and steaming out the overflow, I slightly opened the cap and let the steam out there. After I let it cool off a bit I added coolant and got it home, during that short drive the gauge stayed mid read. I figured the thermostat first so this morning I took it out.... was this a bad idea? Also, I need to know what electronic can I buy to tune my fuel management, isn't it a power FC? Are those any good? It is burning rich as hell, which is good after a rebuild but I need to change it now. I fear it is causing issues now, I have an upgraded turbo, racing beat exhaust no cat, front mount intercooler, bigger injectors, ect. ANY HELP OR IDEAS! PLEASE FEEL FREE TO SHARE! THANKS! ~FOX

 

Removing the thermostat will just make the car take longer to warm up to its optimal operating temperature. While it's taking its time warming up, it is recommended that you keep it under 3000 rpm and NOT drive under boost. So... you should probably put the thermostat back in. Drilling an additional hole in it is an option, since you already have it out of the car.

Do you have an air separator tank? If so, when you're refilling coolant, you need to have the AST valve open to allow the coolant to actually circulate through the engine. With it sealed, a wall of trapped air may be preventing this circulation and causing the water temps to rise.

If your intercooler in obstructing the air flow to your radiator, you're going to want to install a fan switch to keep things cool when you're not at freeway speeds. I have a manual fan switch as well as a vented hood.

You have a lot of modifications, and the Power FC is a great tool for managing your setup, and your car will be a lot more fun to drive once it's PFC tuned. The Commander itself allows you to tune the engine and provides a lot of diagnostic information, including battery voltage, leading and trailing timing, injector duty, water temp, air intake temp, knock levels, rpm and boost. Push the up arrow, and you get peak values.

Hope this helps.

 

Dumb question.. Did you remove the fan shroud.. I did dove 10 miles and over heated

 

Thanks for all that info! I just have one question before I try it out, where is the air seperater tank and the AST valve? Plus would an electrical fan on the front side of the radiator be a good idea because I have a the fan that runs off the engine with the good fan shroud. My intercooler does seem to be blocking a good portion of the air for the radiator. I can post pics of anything so if you need to see something I am talking about just tell me. You have been a big help thanks!

 

also check the cap.

 

Make sure the belt on the water pump is not slipping. Get a new thermostat from the dealership.

However, excessive pressure buildup in the coolant system could indicate a blown coolant seal, which could be allowing combustion gasses to enter the coolant system.

Good luck...



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