Volvo Penta throttle control

[Brad3311]

This has happened twice this weekend. Cruising slow at about 1000 rpm' sand the port engine drops to below 700 and while the shift lever is still in forward the port engine goes into reverse. The only way I could get the engine out of reverse was to shut the engines off. Someone said the fuel filters may need to be changed but I never had an engine flip into reverse without me shifting into it. Can the EDC units on the Volvo go haywire? Just wondering if you had ever heard of that situation?

 

[petem]

Telling us what engines they are might help!

 

[Brad3311]

Telling us what engines they are might help!

Volvo Tamd75

 

[Andyroonot]

Volvo Tamd75

What are your engine serial numbers? There could well be a campaign available for your engines that addresses this issue.

Description of the problem as per the attached, which sounds like it matches your symptoms. 75’s are included in this so if you can send your S/N then I can easily see if it’s covered or not

 

[Brad3311]

Engine S/N's
2071177909
2071177904

 

[Andyroonot]

Yep, both are showing as being covered by this campaign so get in touch with your local VP Dealer, give them those numbers and get it booked in. The work involves fitting an electronic unit (known as a 'Signal Processing Module' or SPM) which detects erroneous throttle signals and prevents them from causing the problem. One SPM will be sufficient for one helm station on a twin engine boat, so if you have a flybridge the Dealer will need 2 x SPM's to complete the work.

Be aware though - whilst this should stop the symptom itself from happening (i.e. it should no longer change gear/RPM of its own accord!), the root cause of loose pins etc. may well lead to fault codes from the SPM, something which can only be resolved by replacing the pins/plugs as required. Basically you might still have a problem to deal with but it should at least prevent the dangerous situation of it going into reverse!

Therefore, whilst the labour, parts and any travel costs for the supply & fitting of the SPM will be covered by Volvo Penta, any subsequent repairs required to the plugs or pins will NOT be covered by the campaign and so would need to be covered by yourself.

 

[BruceK]

Great seeing the forum do what it's best at.

 

[Brad3311]

Yep, both are showing as being covered by this campaign so get in touch with your local VP Dealer, give them those numbers and get it booked in. The work involves fitting an electronic unit (known as a 'Signal Processing Module' or SPM) which detects erroneous throttle signals and prevents them from causing the problem. One SPM will be sufficient for one helm station on a twin engine boat, so if you have a flybridge the Dealer will need 2 x SPM's to complete the work.

Be aware though - whilst this should stop the symptom itself from happening (i.e. it should no longer change gear/RPM of its own accord!), the root cause of loose pins etc. may well lead to fault codes from the SPM, something which can only be resolved by replacing the pins/plugs as required. Basically you might still have a problem to deal with but it should at least prevent the dangerous situation of it going into reverse!

Therefore, whilst the labour, parts and any travel costs for the supply & fitting of the SPM will be covered by Volvo Penta, any subsequent repairs required to the plugs or pins will NOT be covered by the campaign and so would need to be covered by yourself.

Back about 5 years ago a tech from Volvo came to my boat and put something on my controls right under them . Could they have done the fix and not updated my serial numbers? The recall at that time was for a problem where the boat if in neutral could shift into forward unintended. Is there a way to check on past recalls? Thanks for all your help
What and where would the plugs and pins be located?

 

[Andyroonot]

Well that's (potentially) annoying as it could well be the SPM that has already been fitted! The system is showing those engines as still being in need of the campaign though, and there is no claim histroy of any sort to suggest that it's been done, although it could have been claimed against the wrong numbers I guess.

The SPM looks like the image in the attached - can you see something like this under the helm?

 

[petem]

Well that's (potentially) annoying as it could well be the SPM that has already been fitted! The system is showing those engines as still being in need of the campaign though, and there is no claim histroy of any sort to suggest that it's been done, although it could have been claimed against the wrong numbers I guess.

The SPM looks like the image in the attached - can you see something like this under the helm?

Andy, where did that image come from?

 

[Brad3311]

Well that's (potentially) annoying as it could well be the SPM that has already been fitted! The system is showing those engines as still being in need of the campaign though, and there is no claim histroy of any sort to suggest that it's been done, although it could have been claimed against the wrong numbers I guess.

The SPM looks like the image in the attached - can you see something like this under the helm?

I can look. I wonder if those modules ever go bad

 

[Andyroonot]

Certainly possible. At the end of the day though it's not been claimed for, so even if there is one already fitted you've basically got a free ticket to get it replaced so nothing to lose

Where are you based?

 

[Brad3311]

Boat is in Hudson WI

 

[Marcopol]

What are your engine serial numbers? There could well be a campaign available for your engines that addresses this issue.

Description of the problem as per the attached, which sounds like it matches your symptoms. 75’s are included in this so if you can send your S/N then I can easily see if it’s covered or not

The attachment shows only a few lines of text for me. Is there meant to be a link there ?

 

[Marcopol]

I have this problem with my Penta D4 port engine
Engine numbers attached. Can you tell me if they are on the list ?

 

[volvopaul]

I have this problem with my Penta D4 port engine
Engine numbers attached. Can you tell me if they are on the list ?

The SPM wax for the 75p engine range , if you have similar issue with D4 then you have a different system that runs the engine that’s faulty , possibly the potentiometer faulty .

 

[Marcopol]

It happens on both the main and fly bridge throttles.

 

[ANDYFRAN61]

What are your engine serial numbers? There could well be a campaign available for your engines that addresses this issue.

Description of the problem as per the attached, which sounds like it matches your symptoms. 75’s are included in this so if you can send your S/N then I can easily see if it’s covered or not

Hello
I am having problems with my starboard engine losing calibration. I have had new pots fitted, new throttle & the wiring hard wired. The modules have also been swapped over to see if the fault was the module but it is not. The engines are KAD300's . Would you be able to check if our serial numbers qualify for the Volvo Penta SPM upgrade?
The numbers are: 2300075268 2300075246
The boat is a 2004 Gobbi 425SC
The starboard engine will only start when the throttle is in the reverse position, although something is telling it it is in neutral.
Hope you can help.
Andy

 

[jrudge]

What symptoms are you getting on loss of calibration ?

 

[ANDYFRAN61]

What symptoms are you getting on loss of calibration ?

Once it is calibrated the engine will start in the neutral position. When you turn off & start again, it has lost it's calibration. Initially this would happen once in a while, now it is all the time. The only way the engine will start is when the throttle is in the reverse position, the EDC assumes this is neutral.