Cooling fan/ Radiator indicator

Brett provides the best answer to this.

Brett Duxbury Mar 04, 2022
Hi Anonymous, can you get a radiator pressure test while engine running.

I Suspect exhaust from valves in engine building up pressure in cooling system. (blown head gasket or warped head)

OP is getting the engine pressure tested.

Good job!

Well Michael put your hand on radiator upper hose and then the lower hose right after car warms up and just starts overheating is there a temperature difference if so one of two things is going on thermostat not opening even though it is new or there is still an air bubble in the cooling system if nthere is no difference and still overheating might have to explore headgasket being blown

Check your coolant level.

How is the water flow, bet you that it is poor and this is normally caused by 2 things, thermostat siezed shut and the other is a faulty water pump, both are urgent matters

It could be the electric fan that cools the radiator is not working correctly check to seevthat it comes on when the car Warms up.
check for loose connections or blown fuses. Hope this helps

The cooling fan is held onto the plastic shroud so to remove the fan you must first remove the shroud as the motor comes out from behind closest to the rad.this 05 model doesnt have a manual centrifugal type unlike the earlier models its not a difficult job but lots of bits and bobs to remove first though

my 1990 325i bmw is running hot
it seems to have a lot of air in the cooling system
i replaced the head gasket, water pump and thermostat
how do i get the air out of the system

Can you not jack the front of the car up and access it from below?

1. Remove air cleaner and duct assembly.
2. Drain the coolant.
1. Remove the engine mount struts.
2. Remove the cooling fans with the cooling fan shroud.
3. Remove the radiator upper hose from the radiator.
4. Remove the radiator lower hose from the radiator.
5. Disconnect the transaxle oil cooler lines from the radiator.
6. Remove the radiator brackets and bolts.
7. Remove the radiator. Installation Procedure
1. Install the radiator. Notice: Refer to Fastener Notice in Service Precautions.
1. Install the radiator brackets and bolts.
• Tighten the bolts to 24 Nm (18 ft. lbs.) .
1. Connect the transaxle oil cooler lines to the radiator.
2. Install the radiator upper hose to the radiator.
3. Install the radiator lower hose to the radiator.
4. Install the cooling fans with the cooling fan shroud.
5. Install the engine mount struts. Notice: When adding coolant, it is important that you use GM Goodwrench DEX-COOL (R) or HAVOLINE (R) DEX-COOL (R) coolant. If Coolant other than DEX-COOL (R) or HAVOLINE (R) DEX-COOL (R) is added to the system the engine coolant will require change sooner; at 50,000 km (30,000 mi) or 24 months.
6. Fill the cooling system.
7. Install the air cleaner and duct assembly.

Flush Your Radiator