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        General >> Problems >> Dodgy rev counter
        
(Message started by: ian on Mar 21^st, 2005, 5:20pm)

Title: Dodgy rev counter
Post by ian on Mar 21^st, 2005, 5:20pm

Ever since I bought my Scorpio it's suffered from an eratic rev counter. It works fine about 10% of the time (idling at about 800 revs, motorway cruising at 3500 revs) the rest of the time it reads roughly treble what I think the correct rpm actually is and the needle fluctuates wildly. When idling it jumps anywhere between 1500 and 3000 revs with no change at all in the engine sound.

Any ideas? I've a feeling it might be a common Scorpio fault as I've seen 2 on ebay with a similar problem.

Title: Re: Dodgy rev counter
Post by Snoopy on Mar 21^st, 2005, 11:03pm

could be something as simple as a loose wire or plug in the back of the dash.....

Title: Re: Dodgy rev counter
Post by SaveTheNight on Mar 21^st, 2005, 11:18pm

fairly unlikely being only the rev counter but try an instrument reset :

http://www.fordscorpio.co.uk/instreset.htm

cheers ...... STN

Title: Re: Dodgy rev counter
Post by nadaman on Mar 22^nd, 2005, 2:06pm

hi
when i had my scorpio the rev counter did just that so you are not alone, must be a common fault.

paul

Title: Re: Dodgy rev counter
Post by Mottsy on Mar 22^nd, 2005, 5:55pm

When I first got my Scorpio I had this problem. It was fixed under warranty and was the diodes in the alternator that were causing the problems.

Hopefully someone here will let you know how to replace them.