Overheating :( help

[terror]

so my recently purchased 1jz supra is having a bit of a problem, it over heats about as fast as it boosts . and after i shut it off steaming coolant sprays from somewhere near the turbo, im guessing the thermostat is stuck any tips on what it could be or how to take out the thermostat without removing the turbos, thanks

 

[dinhnerz]

You don't have to remove the turbo to change the thermostat. See if you have enough coolant in the system. If you have pressure in the upper radiator hose.

 

[terror]

i removed the thermostat and the car is overheating still and running rich

 

[dinhnerz]

I believe the turbos are also water cooled. Check the turbos for leaks.

 

[91 mK3]

would the coolant/water mixture affect it?

 

[CyFi6]

Yes, antifreeze alone doesn't transfer heat nearly as well as water.

 

[terror]

ok i fixed all leaks but now a check engine light came on and the cars running rich and not well

 

[suprastanger507mgte]

Check and change the radiator cap. This is one of the last thing people check and it impirtant that the cap is in good working order. If it is more than a year old, throw it away.
Also, how is your fans? Are you running hydrofans? Are they spinning at proper speed?
Radiator - how old is it? Clogged? Could be.

IF the check engine light is on, then the car is thrwoing a code. Check for codes and fix if necessary.

 

[terror]

ok guys thanks for all the help i think i fixed the overheating problem by replacing cracked hoses removing thermostat and setting the fans to come on at a lower temp BUT feels like im reaching fuel cut 5psi earlier.... i checked the engine codes - code 31- Air flow meter circuit or Vacuum sensor signal fault , now what exactly can i do about this. thanks

 

[jdub]

You need to run a thermostat

 

[MrOizo]

How did you get the fans to come on earlier? i installing some controller soon and would mind know what ther people have .

cheers.

 

[terror]

but i dont want one! lol its never too cold in vegas anyway, theres a knob you turn to the left to set the fans to come on earlier, any one know about this Air flow meter circuit or Vacuum sensor signal fault

 

[CyFi6]

Without a thermostat your warm up times will increase by a lot, if you ever reach fully warm that is... If you never reach operating temp, your car will run rich, you will get bad fuel economy, and you can cause unnecessary wear to certain engine parts.

 

[AGlobalThreat]

but i dont want one!

Please explain why you don't want your supra's cooling system to work properly.

 

[terror]

i just ordered a new radiator and hoses and will replace the thermostat when i replace those parts, but until then the cars not going to be driven very much if i cant fix my code 31