Cruisers Forum

Thread Tools Search this Thread Rate Thread Display Modes
Old 04-11-2019, 18:23   #1
Registered User

Join Date: Oct 2016
Posts: 105
Volvo Penta 2003 alternator/starter problem

Hi all,

After recently arriving at a new anchorage I discovered the salt water hoses to my heat exchanger where leaking and my alternator has been splashed with salt water and some wires corroded and come apart with one wire to the positive alternator terminal basically disappearing a smaller one not from the battery thatís intact and Not damaged. Anyone have any ideas where the two smaller wires go on the engine ? Itís a delco alternator. I know itís a general question miss some info but any help would be appreciated. At this point I canít start my engine.
JBas is offline   Reply With Quote
Old 04-11-2019, 18:51   #2
Registered User

Join Date: Nov 2018
Posts: 800
Re: Volvo Penta 2003 alternator/starter problem

A long time ago, I was helping a fellow that had a Volvo engine. I donít remember which model. We wanted to start the engine with the alternator physically mounted, but disconnected electrically. No go. After an hour of going through the diagrams, we found that there was a starter relay that was GROUNDED via a pin on the alternator. Without that connection the engine wouldnít crank. My guess was that by connecting the start relay to that point, the relay was grounded when the motor was NOT running, but was at +12v once the engine started. That would keep you from trying to engage the starter when the engine was running.

Something like that would match your problem description.
Bycrick is offline   Reply With Quote
Old 04-11-2019, 18:52   #3
Registered User

Join Date: Jan 2008
Location: SF Bay Area (Boat Sold)
Boat: Former owner of a Valiant V40
Posts: 913
Re: Volvo Penta 2003 alternator/starter problem

Here is the wiring diagram, assuming you have the factory setup. It will be different if you have an external regulator
Attached Files
File Type: pdf 2003 wiring.pdf (237.6 KB, 54 views)
jamhass is online now   Reply With Quote

alternator, penta, volvo

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Volvo Penta 2003 - Electric Control Panel Problem nickbergeron Engines and Propulsion Systems 21 23-06-2021 14:18
Alternator Volvo-Penta 2003 vtomanov Electrical: Batteries, Generators & Solar 8 09-01-2019 18:19
For Sale: Alternator & starter for Volvo-Penta D1-20B engine Seastream General Classifieds (no boats) 0 21-11-2018 08:37
Volvo Penta 2003: Why is starter motor clicking? Joe500 Engines and Propulsion Systems 9 16-08-2016 18:27
For Sale: Volvo-Penta 2003 (2002 and 2001) Spare Parts For Sale- plus high amp AMPLE alternator Paul L Classifieds Archive 15 28-07-2012 08:09

Advertise Here

All times are GMT -7. The time now is 17:40.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.