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View Full Version : Issue replaced water pump impeller 2009 LSV



.264 magnum
04-04-2011, 12:40 AM
This Saturday I replaced my water pump impeller. It seems to work but not especially well. When I go fairly hard and then slow to idle or no wake speed the gage will climb to an indicated 175/180. Upon giving it a little gas the gage very quickly drops back down below 150 indicated.

With the previous impeller the temp would climb to an indicated 150/155 and hover between the two.

Possibly - I didn't tighten the four cover bolts enough. They appear to be brass or similar and I didn't want to queer the threads.

Thoughts?

viking
04-04-2011, 01:28 PM
FWIW - 180 is standard operating temp on my 07 outback

.264 magnum
04-04-2011, 01:35 PM
FWIW - 180 is standard operating temp on my 07 outback

Interesting thanks.

Razzman
04-04-2011, 01:41 PM
My '07 LSV runs 180 as well.

DOCDRS
04-04-2011, 04:42 PM
I bet you have the 340 cat ext

rdlangston13
04-04-2011, 08:33 PM
mine stays between 160 and 180. doesn't ever concern me

JesseC
04-04-2011, 08:54 PM
Agreed on the 175/180 being normal temps. If you are concerned, check the inlet side of your trans cooler. It is about a 1' pipe with #2 sized pencil holes. Last season I noticed my boat would rise in temps and then fall when underway and I found that there was a 1" square pice of cardboard lodged in there. I check it every so often now. If you have a raw water strainer I doubt you will find anything in there. This is the reason I added mine.

viking
04-05-2011, 04:35 PM
If you have a raw water strainer I doubt you will find anything in there.

The only thing you may find is some chewed up Impeller :shock:
How did the old one look?

.264 magnum
04-06-2011, 02:13 AM
The only thing you may find is some chewed up Impeller :shock:
How did the old one look?

The old impeller looked close to perfect.

.264 magnum
04-06-2011, 02:14 AM
Thanks everyone.

I'll check the trans cooler/lines.

schuylski
04-11-2011, 08:35 PM
running temp depends-

If you've got fresh water cooling then i think the operating temp is 180 like a car, but if you've got raw water cooling it should not be 180! that's too hot... it causes deposits in the engine from impurities in the raw water eventually.

i think if you have a cat it has to have fresh water cooling.

DOCDRS
04-11-2011, 08:56 PM
What engine do you have????????????????????