Re: few question about the bmw535i E39

In article <4f993a2b19dave@xxxxxxxxxxxxxxx>,
Dave Plowman (News) <dave@xxxxxxxxxxxxxxx> wrote:
In article <fvf4f2$eiu$1@xxxxxxxxxxxxxxxx>,
Scott Dorsey <kludge@xxxxxxxxx> wrote:
BMW535I <none@xxxxxxx> wrote:
thanks for your kind help. just found some coolant lost on the floor
near the rear of the engine. there is NO water in the oil. and i have
tested the car with the heater and aircon off, then there is no leak.
lt only leak when the heater and aircon is turned on. looks like
somethiing to do with the heater pump? there is no coolant inside the
car. i would have to top up the bottle about 1/3 after 200 miles
highway drive ( with heater on). what coud be the problems? where is
the heater pump located ( heater core) located? is it easy to replace?

I do not believe there is a seperate heater pump. The heater core is
under the dash and is difficult to replace. Check the hoses carefully
and hope you have a bad hose.

Some models have an electric pump to run the heating when the engine is
stopped.

Yes, the E38 has one. Does the E39 as well? As I recall, the one on
the E38 had a plastic body but was fairly easy to get to from underneath.
Much easier than getting to the heater core.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
.

Relevant Pages

  • Re: Heater output / Engine speed
    ... The heater takes ages to give ... When you pull away and have some engine revs, ... > The first thing I'd check on this is the heater control valve. ... > bulb to the connector (a 5W capless bulb is ideal if you don't have a ...
    (uk.rec.cars.maintenance)
  • Re: Heater output / Engine speed
    ... >>Y reg Fiesta diesel with Endura Di engine. ... > < the heater cools noticeable. ... > The first thing I'd check on this is the heater control valve. ... > bulb to the connector (a 5W capless bulb is ideal if you don't have a ...
    (uk.rec.cars.maintenance)
  • Re: Block heaters?
    ... cabin heater began working faster which was nice. ... standard fitment. ... Although it certainly helped heat the engine up faster, ... Later I fitted diesel line heaters as ...
    (uk.rec.driving)
  • Re: Weather Resistance
    ... Davidson) wrote: ... Not a good idea with a gasoline engine. ... but a heater is the best answer. ... synthetic oil it might have a chance. ...
    (rec.photo.digital.slr-systems)
  • Re: Engine wont warm up
    ... A couple winters ago the heater began putting out lukewarm air. ... the moisture is coming from the crankcase because the engine is ... I replaced the thermostat with a Duralast 195 degree thermostat and ... car and watched the temperature gauge and the gauge went ...
    (rec.autos.tech)