Rev Counter on 97 Isuzu 1.7TDS Astra

The rev counter has packed up on the above car, any ideas what it can be?

Thanks in advance

Jon

 

Alternator might be worth checking

 

The rev counter is driven off the back of the altenator.
Check that the drive cable is ok.
Dave

 

Any squealing noises from the alternator belt, check if it is tight enough,
if so then the alternator is poorly, I've had it twice.


Michael Shaw

 

AND dont forget that the altenator also drives the vacumn pump for the
brake servo - a bit safty critical that.
As the OP mentions if it squeals loundly under load and the belt is
tight enough you are in for a bit of a nasty suprise. New ones cost £160
+ from Vauxhaul. Dont know about re-conditioned units or repairing the
old one.
Dave

 

Recon £120 from S&B Auto Electrical in Bristol.

 

Still painfull though :=)
Dave

 

the vacuum pump and charging circuit of alternator are both ok at the
moment, is the failure of these immenent (dodgy spelling i know)?
cheers

Jon