Rev counter dancing all over the place

[flyfisher]

Over last few weeks my bongo (2.4 diesel) rev counter has been going nut’s one minute its fine and then starts dancing all over the place and then will settle back down

Any one know what the cause is and any advice, is it something that should concern me ?

I ran this past Ian who had not heard of the fault before!

Thanks (new forum member but long term club member)

[missfixit70]

Welcome to the forum
I assume you mean 2.5l turbo diesel, there is no 2.4 Sounds like it could be the the sensor, thread here that should help - http://www.igmaynard.co.uk/bongo/forum/ ... =3&t=24171

[flyfisher]

Yes that was quick and yes mean 2.5

Thanks

[Northern Bongolow]

could be worth checking the speedo correction chip,and that the alternator is doing what it should be too.

[karena]

defo check the alternator mine was doing that when my alternator went.also have you plugged amything new into the cigarette socket once put a cheap phone charger in and had similar effects.

[flyfisher]

Thanks Guys

I have a cheapo phone charger will check if it only happens when plugged in like to look at simple options first

[missfixit70]

The alternator output should be somewhere between 13.8v - 14.6v, if it's less than that, it may be your issue, may be accompanied by sediment & charge light glowing, may not though