Rapido643 Posted April 6, 2017 Share Posted April 6, 2017 Hi everyone I know it's been mentioned before but I can't seem to find the thread and get a fix to this problem. It's a 2011 Rapido 643 Ducato 2.3 multi jet. The fault is when starting, after a few seconds the tick over gradually increases to 1200rpm. If you leave it, after about 3 minutes the alternator charge light comes on and will stay on. However if you rev the engine to 1900/2000rpm the charge light goes out and the tick over gradually reduces back to normal. It's been like this for a long time and have just lived with it as the battery is being charged but I would like to get it sorted now. I guess the ECU is compensating for the lack of initial charge, but don't want to change the alternator or regulator needlessly if it's a more simple fix. I did try a temporary earth wire from the alternator to the earth pin but to no effect. Thanks for your help Link to comment Share on other sites More sharing options...
Keithl Posted April 6, 2017 Share Posted April 6, 2017 Check your engine earth straps! Quick check is to connect a single jump lead from battery negative post directly to a good clean earth point on the engine, ie a lifting eye or similar. Keith. Link to comment Share on other sites More sharing options...
Airstream Posted April 6, 2017 Share Posted April 6, 2017 Hi, Same thing happened to our van It was the alternator regulator brush pack Info on how to change is on YouTube as is common failure Took an hour to replace on our ducato x250 as no need to remove alternator Part was about 15 quid off ebay Ray Link to comment Share on other sites More sharing options...
aandncaravan Posted April 6, 2017 Share Posted April 6, 2017 The thread where Nick documents the issue is here : http://forums.outandaboutlive.co.uk/forums/Motorhomes/Motorhome-Matters/X250-Engine-earth-fault/21815/ Nick mentions that the fault may only occur if the Head lights are turned on, or if there is a load on the Alternator. Obviously on a Motorhome there may be the 'unseen' load on the Alternator of charging the habitation batteries. Link to comment Share on other sites More sharing options...
Rapido643 Posted April 8, 2017 Author Share Posted April 8, 2017 Hi today tried the jump lead test from the negative battery terminal to the engine lifting bracket, but no difference. Then connected the jump leads to the battery of my car with the engine running and it cured the problem. Moved the earth jump lead to the bonnet catch and still ok. So I guess its the voltage regulator being lazy we'll see when I change it this week. Link to comment Share on other sites More sharing options...
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