Question about 1996 BMW 318

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The engine seems to overheat and the internal heater blows cold

It began today, the heating didnt get warm at all, and the engine temperature gauge rose to the red. As soon as i was on the move, the engine cooled and the heater warmed up, as soon as slowed in traffic the heating went cold and the engine temperature gauge rose. Any Ideas ??

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  • danga_73 Feb 16, 2009

    i have the same problem too but i seem to be loosing water but theirs no evidence on the road at all when stationary ?

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The problem is your coolant level has gone too low check and top up when engine is cold, you will see the marks on the expansion bottle, if prob persists there may be an airlock in the heater radiator. keep an eye on coolant level or you will have cylinder head problems.

Posted on Mar 21, 2009

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First thing to do is check the coolant level. Low coolant can cause this. Next is check the thermostat .

Posted on Jan 03, 2009

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0900c1528008f125.jpgFig. 1: View of the Engine Coolant Temperature (ECT) sensor 0900c1528008f126.jpgFig. 2: Engine Coolant Temperature (ECT) sensor locationTESTING
See Figures 3 and 4
  1. Remove the ECT sensor from the vehicle.
  2. Immerse the tip of the sensor in container of water.
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0900c1528008f120.jpgFig. 3: Intake Air Temperature (IAT) and Engine Coolant Temperature (ECT) sensor wiring diagram 0900c1528008f095.jpgFig. 4: ECT sensor temperature vs. resistance values

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