liv2ryde100
Active Member
Ordered it from defender. Has the flange on one end and hose fitting for 1” hose on the other.
see ray
Active Member
- Sep 28, 2008
- 512
- Boat Info
- NEW 05-360 DA ,
(SOLD) 06 40DA HARD TOP. 8.1L HO 420 hp L
Previous boat 05 340 DA 8.1L 370 hp
- Engines
- 8.1L HO 420hp
V Drives
I have a brand new port side switch panel module for a 340 for sale
In the parts for sale let me know if needed
In the parts for sale let me know if needed
KevinC
Well-Known Member
I probably ordered it online - that was a long time ago. When I replace mine I did the entire basket and the 90 degree turn. If that is all that is broken then I would just get the turn and replace it.
The one in the picture looks like the drain I had in the cockpit sink of my 260DA.
This is also on my long term to-do list because my gallery drain basket is corroded and discolored - for the time being it is hidden below a drain screen so out of sight.
-Kevin
liv2ryde100
Active Member
Yea min isn’t the best looking either but with everything else I need to work on that’s way at the bottom of the list
liv2ryde100
Active Member
just changed out the iac muffler sponge thing. i cant seem to find where the iac valve is mounted? if its the original will it be painted black?
dagerringer
Member
- Apr 2, 2019
- 49
- Boat Info
- 340SDA Sundancer 2003
- Engines
- 8.1S Horizon
If you're referring to the 8.1s Mercruiser, on my 2003 editions the IAC is located on the opposite side from the serpentine belt. Small silver metal object with a couple of bolts holding it on. Nothing hard or magical about replacing it. A 5 min job.
dagerringer
Member
- Apr 2, 2019
- 49
- Boat Info
- 340SDA Sundancer 2003
- Engines
- 8.1S Horizon
Unless you have digital controls. Then the IAC is built into the throttle body itself.
liv2ryde100
Active Member
2005 so cable controls I’ll look on the throttle body thanks.
dagerringer
Member
- Apr 2, 2019
- 49
- Boat Info
- 340SDA Sundancer 2003
- Engines
- 8.1S Horizon
Input your engine serial # in the upper right and you'll find your engine. Then look for Throttle Body and you'll get a good pic and part nymbers. https://www.mercruiserparts.com/v-8-inboard-engines
dagerringer
Member
- Apr 2, 2019
- 49
- Boat Info
- 340SDA Sundancer 2003
- Engines
- 8.1S Horizon
I've exhausted my search and also reached out to Mercruiser with no help. There is no published info for COOLANT PRESSURE. I've got my Port reading 5psi and my Stb reading 35psi after coming up to temp and running at 1200 rpm. Can someone help me by checking theirs and letting me know what you're getting? This seems to be the only spec that is differing between the two engines.
techmitch
Well-Known Member
- May 1, 2008
- 8,400
- Boat Info
- 1999 270 DA
- Engines
- Twin 4.3s W/Alpa I Gen II's
Maybe you should check the actual pressure on both engines with a gauge.
dagerringer
Member
- Apr 2, 2019
- 49
- Boat Info
- 340SDA Sundancer 2003
- Engines
- 8.1S Horizon
Even if I knew that they were correct in the system by doing a manual check, it still wouldn't tell me what it is supposed to be. So I figure, law of averages by going with other peoples readings will tell me if something is out of whack and which one.
trukschroeder
New Member
Does anyone know where the Digital Sounder Module is located on the 2003 340 SDA? I'm getting an intermittent "sonar not available" message and i'm hopping my problem is the hsb2 connection at the DSM250... but i can't locate it.
rmlsll
Active Member
- Oct 11, 2009
- 242
- Boat Info
- 340 Sundancer 2004 (SOLD)
24' Avalon Tritoon 2019
10' Zodiac (WENT WITH 340)
- Engines
- Twin 8.1 Mercruiser V-Drive
150 hp Mercury outboard 4 stroke
I think behind top helm panel.... the one with tach's and speedo
trukschroeder
New Member
I did try to peek up that way when i had the display unit out and i didn't see anything that looked like a DSM250 but I'll definitely pull the panel and have a look. Thanks!
Ididntdoit
Well-Known Member
Think about it......35psi would be blowing out gaskets......i ran 2-3psi at idle and 8 or so at 2800 rpm.....the senders are notoriously bad IIRC its a late 90s chevy pick up oil pressure sender repurposed by mercruiser.
dagerringer
Member
- Apr 2, 2019
- 49
- Boat Info
- 340SDA Sundancer 2003
- Engines
- 8.1S Horizon
What engines and setup do you have?
Also, here is an update after a good run yesterday....After getting up to speed and settling in around 3600 rpm, the pressure on both stayed around 35-37 psi. Back to trolling around 1500 rpm or less and the port will drop to or below 5 while the strbd stays around 35. Temps on both engines stayed below around 165-167. Of note, the port circulating pump was replaced last year. So I, can we assume the port is acting 'normal' and the strbd staying high at idle needs replacing?
dagerringer
Member
- Apr 2, 2019
- 49
- Boat Info
- 340SDA Sundancer 2003
- Engines
- 8.1S Horizon
Another issue....gotta love boating.....has anyone had to replace the wiper motors on their 340? Specifically, 2003-2008 models.
trukschroeder
New Member
checked today... nothing there. i tried to follow the hsb2 cable from the display, it appears to pass thru the helm "circuit breaker" access panel under the steering wheel and disappears down and to the starboard. In the installation section in the manual that came with the boat it states not "intended for bilge area" or something like that, but who knows...
dagerringer
Member
- Apr 2, 2019
- 49
- Boat Info
- 340SDA Sundancer 2003
- Engines
- 8.1S Horizon
I would guess that it is attached to the hub that is with the strbd engine. On mine, twin 8.1s inboard, my paddle wheel / sea temp has it's connections there. Worth a look....
