Overheating help

[Erick]

So back to this common subject.

I am having overheating issues with the M30. Ever since I switched fans for a more powerful one, I am having a hard time bleeding the cooling system. I've tried every way possible, but it seems like I can't bleed it.

I tried putting the car uphill, tried bleeding through the return hose (rotated 90 degrees upward), tried bleeding it through the bleed screw, and nothing.

Suggestions, thoughts, ideas? Just trying to look at where I should start once I sober up tomorrow morning.

Appreciate it

- Erick

[Doughnut]

Hows your thermostat? Is it possible that it could be stuck closed?

I still honestly don't know how people have so much trouble bleeding their cooling systems, I've never had an issue... Crack open the bleed screew and sqeeze hoses as your pouring coolant in.

[Lurker27]

try the method of holding the coolant tank above your head as you fill the system, maybe with the bleed cracked? Water wetter?

[e30trooper]

running the car with the coolant res. cap open for about 15 mins. go drive around then open the cap again and fill. the air will surface its self.

[LowR3V'in]

What I do is open the bleed screw on a cold engine.
Pour in the coolant till it spouts. Tighten the screw.

Let it warm up with the cap off. Still not bleed let it go through some heat cycles
and it'll keep burbling out air if you have any.

What reservoir did you use?

[Erick]

running the car with the coolant res. cap open for about 15 mins. go drive around then open the cap again and fill. the air will surface its self.

The car starts overheating in 5 minutes of just sitting there.

I am using the M20 late model reservoir.

I am going to check the thermostat as I've had that happen to me before on the m20.

Thanks for the thoughts. I am going to try that out and keep you guys posted.

[Jean]

See if this helps - http://www.mye28.com/viewtopic.php?t=58368

[Erick]

Thermostat was stuck. Running the car without it now and it was super easy to bleed the system. I need to put a switch on the fan. With in on all the time, the temperature never leaves the blue :p

[Lurker27]

cars have thermostats for a reason, do it right and replace it.

I assume this is redundant and obvious but it is hard to tell from your post.

[Erick]

All it does is help the motor warm up sooner by preventing the flow of coolant while its cold.

Granted I will put one in when it I get around to ordering some parts, but for the lack of a better option, I'll run without one for now. Especially since this is FL, and it's not like we're driving our cars in freezing weather. Motors warm up here pretty quick.

[LowR3V'in]

Just don't get on the freeway.

[Doughnut]

Hows your thermostat? Is it possible that it could be stuck closed?

Thermostat was stuck. Running the car without it now and it was super easy to bleed the system. I need to put a switch on the fan. With in on all the time, the temperature never leaves the blue :p

Win.

Get a new thermostat and 'o' ring asap.