Reply
 
Thread Tools Search this Thread Display Modes
 
Old 03-19-2019, 06:31 PM   #1
Senior Member
 
City: SOMERS POINT, NJ
Vessel Name: SOJOURN
Vessel Model: SWIFT TRAWLER 44
Join Date: Feb 2012
Posts: 136
St 44 195 degrees

All-
We have a 2014 ST 44 w/+/- 450 hrs. About 3 years ago the STBD engine started to display 195 deg coolant. Temp would jump from 185 (normal) to 195 and stay there. Back off a few hundred RPMS, back to 185. This only happens when the seawater is +/- 80 degs.
Temp sensor, t-stat replaced and heat exchanger cleaned.
Anyone else having or had the same situation?
__________________
Advertisement

SOJOURN4 is offline   Reply With Quote
Old 03-19-2019, 09:51 PM   #2
Guru
 
Comodave's Avatar
 
City: Au Gres, MI
Country: US
Vessel Name: Never Say Never
Vessel Model: President 41 DC
Join Date: Jul 2015
Posts: 3,445
Have you replaced the raw water impeller?
__________________

Comodave is offline   Reply With Quote
Old 03-19-2019, 10:29 PM   #3
Guru
 
BruceK's Avatar
 
Join Date: Oct 2011
Posts: 9,410
Are they Volvo engines?
__________________
BruceK
Island Gypsy 36 Europa "Doriana"
Sydney Australia
BruceK is offline   Reply With Quote
Old 03-20-2019, 02:11 AM   #4
Guru
 
North Baltic sea's Avatar
 
Country: Finland
Vessel Model: Nordic Tug 37
Join Date: Sep 2015
Posts: 913
Hi,

Start the impeller check, the raw water filter line in addition to checking the coolant level (when did you change the fluid last?)

If Ok you also need to measure the IR thermometer on the actual heat of the engine, the question may be the sensor, wire connection, oxidation or meter failure. The thermostats are also not eternal, so keep a check on them as well. If there is still no reason, it may be time to clean the heat exchanger.

NBs
North Baltic sea is offline   Reply With Quote
Old 03-20-2019, 05:20 PM   #5
Guru
 
Fletcher500's Avatar
 
City: So-Cal
Country: USA
Vessel Model: Helmsman 43 PH
Join Date: May 2016
Posts: 989
Welcome to the wonderful world of Volvo. On the the newer D Series engines the gages will only Display a max of 185F, and then will tell you if you hit 195F or higher; as you experienced. IE, you will never know if you are in between 185 and 195.
Fletcher500 is offline   Reply With Quote
Old 03-20-2019, 06:30 PM   #6
Senior Member
 
City: SOMERS POINT, NJ
Vessel Name: SOJOURN
Vessel Model: SWIFT TRAWLER 44
Join Date: Feb 2012
Posts: 136
Correct on the 185 to 195. Volvo calls it "dampening".
Coolant changed, impellers yearly, heat exchanger cleaned, strainer gasket, seacock inspected.
IR and showed about the same as the temp gauge.

Real headache...........

Thanks for the feedback
SOJOURN4 is offline   Reply With Quote
Old 03-20-2019, 06:32 PM   #7
Guru
 
twistedtree's Avatar
 
City: Gloucester, MA
Country: USA
Join Date: Jan 2013
Posts: 4,535
Is 195 a problem? What's the acceptable range for that engine?
__________________
www.MVTanglewood.com
twistedtree is online now   Reply With Quote
Old 03-20-2019, 06:42 PM   #8
Senior Member
 
City: SOMERS POINT, NJ
Vessel Name: SOJOURN
Vessel Model: SWIFT TRAWLER 44
Join Date: Feb 2012
Posts: 136
195 is inside the acceptable range
For 1 1/2 years ran at 185 @ all RPMs
SOJOURN4 is offline   Reply With Quote
Old 03-20-2019, 08:09 PM   #9
Guru
 
Comodave's Avatar
 
City: Au Gres, MI
Country: US
Vessel Name: Never Say Never
Vessel Model: President 41 DC
Join Date: Jul 2015
Posts: 3,445
I am not sure I can see a logical reason not to show the correct temperature.
Comodave is offline   Reply With Quote
Old 03-20-2019, 08:33 PM   #10
Guru
 
Fletcher500's Avatar
 
City: So-Cal
Country: USA
Vessel Model: Helmsman 43 PH
Join Date: May 2016
Posts: 989
You may want to pull your after cooler and have it checked at the shop. Don’t try to inspect it in place.
Fletcher500 is offline   Reply With Quote
Old 03-21-2019, 06:43 AM   #11
Guru
 
City: Z
Country: USA
Vessel Model: Beneteau Swift Trawler 44
Join Date: Mar 2017
Posts: 669
From a volvo tech:

"The thermostat starts to open at 180 Degrees and is fully open at 198 Degrees. The alarm will sound when the temp reaches 204.8 Degrees."

I noticed the same where in warmer waters, especially under load (i.e. tons of gear, full fuel, water, etc) I would see 196 at higher RPMs and occasionally 199 when water temps were at their peak in summer. I dont tend to run at higher RPMs except to exercise the engines for 5 minutes here and there. Backing down to normal/cruise RPMs and I saw 185 degrees again. After I was told 204.8 degrees is considered overheat I was not worried. That said, I still plan to do a barnacle buster flush and flush the coolant system and replace this year (even though its not due yet).
mystery is offline   Reply With Quote
Old 03-21-2019, 06:46 AM   #12
Guru
 
City: Z
Country: USA
Vessel Model: Beneteau Swift Trawler 44
Join Date: Mar 2017
Posts: 669
Attached is the Volvo bulletin for flushing the coolant system

Since I have a hot water heater and de-misters also looped into the heat exchange loop, I may have to disconnect/drain those depending on the curves in the hose.

I am only flushing because my coolant looks weird. Its possible that the old coolant type was in the system initially and then replaced with VCS. I had it tested by a lab and they said it looks fine, not contaminated, still has proper coolant properties but I am just going to remove, flush, replace as a pre-caution, if not this Spring, this Fall.
Attached Files
File Type: pdf 26-0-29_US.PDF (96.1 KB, 8 views)
mystery is offline   Reply With Quote
Old 03-21-2019, 07:54 AM   #13
Guru
 
kchace's Avatar
 
City: Brookline, NH
Country: USA
Vessel Name: Blue Heaven
Vessel Model: Albin 43 classic double cabin, twin 135 Lehmans
Join Date: Sep 2013
Posts: 1,333
Have you check the exhaust mixer/water injector? The water has to be able to get out as much as it has to get in. Also, some folks have seen water hoses delaminating internally which will certainly affect flow.


Ken
kchace is offline   Reply With Quote
Old 03-21-2019, 08:05 AM   #14
Guru
 
twistedtree's Avatar
 
City: Gloucester, MA
Country: USA
Join Date: Jan 2013
Posts: 4,535
St 44 195 degrees

Earlier someone said that the Volvo gauge reading jumps from 185 to 190 (or whatever jump you are seeing) and it is the way the gauges work. It seems odd, but if thatís how they work, and the higher temp is not out of range, then I suspect you have completely normal operation
__________________
www.MVTanglewood.com
twistedtree is online now   Reply With Quote
Old 03-21-2019, 09:24 AM   #15
Guru
 
City: Carefree, Arizona
Country: usa
Vessel Name: sunchaser V
Vessel Model: DeFever 48
Join Date: Apr 2008
Posts: 7,668
Quote:
Originally Posted by Fletcher500 View Post
You may want to pull your after cooler and have it checked at the shop. Donít try to inspect it in place.

About every 5 years even with no suspicion of overheat.
sunchaser is offline   Reply With Quote
Old 03-21-2019, 04:30 PM   #16
Guru
 
Fletcher500's Avatar
 
City: So-Cal
Country: USA
Vessel Model: Helmsman 43 PH
Join Date: May 2016
Posts: 989
Sun, agree, as a bare minimum. I think every 3 years to be proactive is even better but that is another thread.

OP, I have been in your exact shoes with D Series engines and had the same issue. If you are jumping from 185 to 195 periodically at high loads, then 196 or higher may be in your future. If you have not had the After cooler pulled and bench checked, I would suggest you do. I don’t know the particulars of your situation...Just my .02 based on what you have described.
Fletcher500 is offline   Reply With Quote
Old 03-22-2019, 07:27 PM   #17
Senior Member
 
City: SOMERS POINT, NJ
Vessel Name: SOJOURN
Vessel Model: SWIFT TRAWLER 44
Join Date: Feb 2012
Posts: 136
Thanks
__________________

SOJOURN4 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





All times are GMT -5. The time now is 09:02 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012