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Old 01 June 2014, 10:49   #1
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mercury 150hp optimax problems

Hi Guys

Wondering if any of you can help me out, Got a 2004 150 opti. was out on it and all of a sudden i got.

Temperature alarm fault
temp fault
oil level fault
tps fault
mat fault
engine temperature sensor
sensor fault
limphome throttle
oil tank reserve 31% remaing.

wondering if anyone can help with any of the codes.

i have stripped all conections and earths cleaned them all and re fitted.

done a compression check on all cylinders top left is 118psi middle left 128 psi bottom left 128 psi top right 135 psi middle right 140 psi bottom right 140 psi.

cheers.
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Old 01 June 2014, 11:15   #2
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Country: UK - England
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Boat name: Hissing Sid
Make: Ross Smith Cobra
Length: 6m +
Engine: 200HP Optimax
MMSI: 235038046
Join Date: Jun 2002
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Sounds like a dodgy connection to me. Data bus....
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Old 01 June 2014, 13:11   #3
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Country: UK - Scotland
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Boat name: Delta Bouy
Make: Delta Dash 2
Length: 6m +
Engine: Mercury optimax 150
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Cheers for the reply Jizm, all connection have been stripped and clean and still no difference.

does anyone know where i would get technical information on the wiring of these engines?
I have tested all components and got the figures but not got any technical data to compare these figures too. cheers
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Old 01 June 2014, 13:17   #4
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Country: UK - England
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I have it electronically and lots of spares. Did the motor go into guardian mode?
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Old 01 June 2014, 13:24   #5
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Country: UK - Scotland
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Boat name: Delta Bouy
Make: Delta Dash 2
Length: 6m +
Engine: Mercury optimax 150
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yeah me too bud. no was cruising at 20 knots and all of a sudden got all the codes come up. the engine was hunting giving me power then with drawing it. i have tested the 5 volt system and i am getting power to all the sensors. i have tested the sensors on ohms and have a list of readings but i require information to compare them too. if i can confirm that the sensors are ok then i suspect it being the pcm (ecu)
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Old 02 June 2014, 10:43   #6
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Country: UK - England
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Boat name: Southern Comfort
Make: NorthCraft 5.5
Length: 5m +
Engine: 150 Optimax
MMSI: 235033276
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Send a message via MSN to Under the Thumb
All the Opti manuals free download here

http://northernexposurerescue.org.uk/resources/ner-policies/boating-resources/
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Old 02 June 2014, 11:51   #7
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Country: UK - Scotland
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Cheers bud, will have a look and give it a go tonight.
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Old 05 June 2014, 04:56   #8
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Country: UK - England
Town: Southampton
Boat name: Kingfisher
Make: Osprey Vipermax
Length: 6m +
Engine: Mercury Optimax 150
Join Date: Jan 2007
Posts: 89
I had a problem last year when my 150 Opti would suddenly go into limp mode and give all sorts of errors on the SmartCraft (unfortunately can't remember what they were...)

Eventually was traced to the paddle wheel on the transom. Had a fault and was pulling the supply voltage down to 1V instead of 5V and then messing up lots of other sensors. The easy solution would be to unplug the paddle wheel (the dealer who fixed it said he doesn't fit them since they're more bother than they're worth), but I got it replaced. You probably don't have a paddle wheel fitted, but certainly worth continuing to look at supply voltages to sensors....

Gerry
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Old 06 June 2014, 12:52   #9
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Country: UK - Scotland
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Engine: Mercury optimax 150
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Thanks Gerry, will give it a try and see. I am getting 5 volts to every sensor but its worth a try cheers.
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