coolant pump over-run after switching engine off
03-21-2003, 04:16 PM
#1
Almost a Member!
Thread Starter
Join Date: Jan 2003
Posts: 72
Likes: 0
Received 0 Likes
on
0 Posts
ml320
coolant pump over-run after switching engine off
An electric pump buzz which seems to be pumping the coolant continues for about 5min after the ignition is switched off on my wifes ML320 (1999).
Is this normal and if so why does it run after the engine stops?
Is this normal and if so why does it run after the engine stops?
03-21-2003, 09:59 PM
#2
MBWorld Fanatic!
Join Date: Nov 2001
Location: Bloomington, IN
Posts: 2,332
Likes: 0
Received 1 Like
on
1 Post
1997 Toyota Tacoma 4x4
That's the auxiliary electric water pump. It provides consistent engine temperature control during warmup and after engine shut down. It basically helps to maintain the coolant's temperature throughout the system, and not allow "hot spots" or "cold spots".
The following users liked this post:
CaliBenzDriver (03-25-2024)
03-24-2003, 09:54 AM
#4
MBWorld Fanatic!
Join Date: Nov 2001
Location: Bloomington, IN
Posts: 2,332
Likes: 0
Received 1 Like
on
1 Post
1997 Toyota Tacoma 4x4
Originally posted by marineboy0
Thanks. Is there data that shows this increases engine longevity?
Thanks. Is there data that shows this increases engine longevity?
03-29-2003, 01:25 AM
#5
Originally posted by marineboy0
Thanks. Is there data that shows this increases engine longevity?
Thanks. Is there data that shows this increases engine longevity?
03-24-2024, 09:12 PM
#6
Junior Member
2004 Ml350, 201K miles. Runs like it will go forever.
