|
|
|
#1
|
|||
|
|||
Aux. water pump, What's it's purpose?
Could someone please tell me what the purpose of the auxillary water pump is? When should it come on? What if it doesn't? Any help would be appreciated. thanks, andy
|
#2
|
||||
|
||||
It was my understanding that the aux. water pump is supposed to ensure that coolant gets to the heater core at lower RPMs, so that you have heat when the car is idling.
Mike
__________________
_____ 1979 300 SD 350,000 miles _____ 1982 300D-gone---sold to a buddy _____ 1985 300TD 270,000 miles _____ 1994 E320 not my favorite, but the wife wanted it www.myspace.com/mikemover www.myspace.com/openskystudio www.myspace.com/speedxband www.myspace.com/openskyseparators www.myspace.com/doubledrivemusic |
#3
|
||||
|
||||
That is also my understanding. At idle, waterflow is not sufficiant. In my '75 300D, which does not have an aux pump, I used to rev the engine every once and a while to get heat out of vents while my wife and I parked at the ski slopes and watched the skiers at night.
__________________
Michael LaFleur '05 E320 CDI - 86,000 miles '86 300SDL - 360,000 miles '85 300SD - 150,000 miles (sold) '89 190D - 120,000 miles (sold) '85 300SD - 317,000 miles (sold) '98 ML320 - 270,000 miles (sold) '75 300D - 170,000 miles (sold) '83 Harley Davidson FLTC (Broken again) :-( '61 Plymouth Valiant - 60k mikes 2004 Papillon (Oliver) 2005 Tzitzu (Griffon) 2009 Welsh Corgi (Buba) |
#4
|
|||
|
|||
Trust the two Mikes
The Florida fellow must be confused by the many front-drive cars which have a circuit to turn on the electric cooling fan when the ignition is off if underhood temperatures create a possibility of vapor lock.
|
#5
|
|||
|
|||
Thank You, TK, I leaned something new,
at least about 124 cars -- I've got a 123 Diesel ('85 300TD) and I wonder if it's true of them too (mine has never been over 85 on the temp gauge)? I'll have to try to make my new CD manual work this weekend and find out, but I've been having trouble getting it up and running.
|
#6
|
|||
|
|||
To: Fimum Fit - if your CD is browser based like mine. A little hint - mine worked erratically or not at all. To make long story short - read the readme text on the CD. I already had Acrobat 3.0 installed when I installed Acrobat 4.o off the cd. They conflicted. Removed both versions and re-installed Acrobat 4.0 from cd and all is well.
|
#7
|
|||
|
|||
Andy,
The other issue is that if your aux water pump draws too much current (I don't remember the specs), it will eventually fry your pushbutton climate control panel. If you think yours is not working properly, it would be good to get those specs and test the current draw to avoid collateral damage.
__________________
Steve '93 400E |
Bookmarks |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Radiator blew up | Scott98 | Diesel Discussion | 15 | 02-24-2004 07:57 PM |
Do I need the drain tube when replacing a OM603 water pump | The Bob | Diesel Discussion | 2 | 10-21-2003 08:23 PM |
300E leaking coolant near water pump | mike690003 | Tech Help | 4 | 08-04-2003 07:30 AM |
190e 2.6 auxilliary water pump problem. | Darin Darlingto | Tech Help | 4 | 03-28-2002 08:22 PM |
Water pump bypass line (or “vent line”) – what is it’s purpose? | RunningTooHot | Diesel Discussion | 0 | 07-08-2001 02:47 PM |