So I've read every post on filling and bleeding the cooling system that i could find. And I can not seem to get my 325e's cooling system working right.
So I recently picked up my 86 325es. Did the timing belt and cooling system update, and can't seem to get it back to performing quite right. Driving around, its never got to the red, but it get to or past the high line in the mid section. Sitting at idle it will get to the red fairly quickly. Parts replaced were;
expansion tank, all hoses, water pump, t-stat, clutch fan, temp sensors.
I've been trying to bleed it for a few days now (well weeks actually, but really focusing for the past few days). Front of car up on ramps. System filled up via the upper radiator hose, then filled up via the expansion tank. Run til just before its in the red, then shut down and open the bleeder screw until its not pure steam, or lots of bubble, just a flow of coolant. Close it down, let it cool some more, then start it up and do it all over.
The thing is the radiator never gets hot, heck or even warm. Its like the thermostat isn't opening at all. But its a brand new t-stat. The other issue that makes me think the t-sat isn't opening is the level in the expansion tank never changes, the lower rad hose never gets warm, the upper hose gets warm, but not super hot. Only thing that gets hot is the hose from the pump to the t-stat housing and the t-stat itself.
One known issue is my secondary fan isn't working, thats a problem I know, but it shouldn't be causing this.
What am I missing?
So I recently picked up my 86 325es. Did the timing belt and cooling system update, and can't seem to get it back to performing quite right. Driving around, its never got to the red, but it get to or past the high line in the mid section. Sitting at idle it will get to the red fairly quickly. Parts replaced were;
expansion tank, all hoses, water pump, t-stat, clutch fan, temp sensors.
I've been trying to bleed it for a few days now (well weeks actually, but really focusing for the past few days). Front of car up on ramps. System filled up via the upper radiator hose, then filled up via the expansion tank. Run til just before its in the red, then shut down and open the bleeder screw until its not pure steam, or lots of bubble, just a flow of coolant. Close it down, let it cool some more, then start it up and do it all over.
The thing is the radiator never gets hot, heck or even warm. Its like the thermostat isn't opening at all. But its a brand new t-stat. The other issue that makes me think the t-sat isn't opening is the level in the expansion tank never changes, the lower rad hose never gets warm, the upper hose gets warm, but not super hot. Only thing that gets hot is the hose from the pump to the t-stat housing and the t-stat itself.
One known issue is my secondary fan isn't working, thats a problem I know, but it shouldn't be causing this.
What am I missing?
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