BMW e36 engine cooling system faults

BMW e36 engine cooling system faultsConventionally all the problems with the cooling system can be divided into 3 groups:
  • the engine is overheating
  • problems with the oven interior
  • out the antifreeze (or other coolant)

In any case, the cooling system BMW E36 is not his strong point, especially for engines (m40 or m43), and from time to time, the owners have an old BMW 3 series begin to deal with the radiator, water pump or heater.

As a rule, in case of overheating, bmw e36, any irreversible destruction - the machine will just stop going (most likely this electronic protection against overheating). After cooling down, the car will go as the cornfields of-factly, but if in radiator bmw e36 appears the coolant, it will not go long...
BMW e36 engine cooling system faults

engine Overheating

There are several reasons:
1. The impeller rotates at such a speed that would blow the radiator in sufficient quantity. In this case, is overheating in traffic jams, when there is no oncoming flow of air. As a rule, leaving the tube the engine cools down. The problem is solved by adjusting the viscous coupling. There is a special plate on the front side you want to bend or preload increase or decrease blower.

BMW e36 engine cooling system faults

2. Gone the liquid from the cooling system BMW E36 or her movement through the cooling system is limited by a faulty e36 thermostat or e36 water pump. In this case, the temperature will rise regardless of whether you are riding or standing in a traffic jam. The fact that the cooling liquid takes place only in the radiator (you can also turn on the oven to maximum, but the radiator cooler alone will not extend the entire cooling system), and so, if the liquid does not reach the radiator, due to the fact that it stopped to pull the water pump (pump) or a broken thermostat,which opens the circuit supplying fluid to the radiator for cooling, no cooling will not. The same thing happens in the absence of coolant.

Water Pump BMW E36

Water pump is a totally separate issue. Besides the fact that it may leak at the junction with the motor, this pump can shatter into small pieces and deposited sediment at the bottom of the engine, or rather, at the bottom of the cooling system BMW E36. This, at first glance, does not create special problems - replaced the pump, and pieces of old impeller pump may lie on the bottom thread will not lift... But no, will lift and carry you where not wanted, and then jam the valve of the stove or something.

And how to get it? - But no way. You need to remove the engine and or disassemble, or tilt and rinse. Because with the pump on the BMW E36 is better not to joke - at the slightest problem - a replacement.

It is worth noting that e36 thermostat is partially consists of plastic, which can break off. This can cause damage to the impeller water pump, that will cause a problem about which we just spoke!

Problems with the stove

1. If the system is tight coolant, the first thing will cease to heat the stove. I.e. the line stove with antifreeze for heating the passenger compartment is above the trunk with the engine cooling. That's why in the first place, the air will appear in the oven. Determined by just the stove begins to warm more weaker. The less antifreeze in the system, the colder the stove. You need to watch the coolant level and look where it goes.

2. The stove on bmw e36 may be locked in position certain temperature, regardless of your efforts on the knob. Spin all you want, but if it jammed the valve of the stove, which is electronically adjustable via the knob of the cabin, the stove will only work in one mode in which it is jammed.

Typically, the wedge valve because of problems with the valve, or because of debris in the cooling system (for example spread do you have the impeller and settled sludge in the crankcase. Over time, the piece may jam the valve). Definitely a problem with it if the stove gets jammed first in one position, and after it let go and jammed in another. The solution is a hammer... and a neat tapping the valve.

Coolant radiator bmw e36 Out

This problem on all old BMW e36. Expansion tank deformed over time and under any circumstances is not getting into the groove of the heat sink. Or the radiator is changing its shape at the seat of the tank. In any case, there is only one solution - it's a complete replacement of the radiator and expansion tank with new ones. Not worth trying to climb in there with sealant and their "crazy hands". Radiator bmw e36 with expansion tank under the replacement and it is a sentence!

Also the fluid easily escapes through a broken radiator BMW E36 or a broken pipe. Traces of this flight can be observed on the pavement under the car. Next, determine visually. However, it is much worse if the liquid gets in the car engine. Here to the experts to resolve the problem. (in this case under the car no traces, in the salon also dry, and the liquid disappears, and the engine began to work is worse... it is worth considering).