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David Towers
Prolific User
Username: xtriple

Post Number: 200
Registered: 6-2010
Posted on Wednesday, 07 February, 2018 - 04:55 am:   Edit PostDelete PostView Post/Check IP

Okay, it's annoying me now, rev counter (tachometer) is erratic, sometimes fine and others, it jumps a few hundred rpm (instantly - far faster than our long stroke engines could increase speed unless propelled by TNT) and stays reading high for a while then returns to normal.

There are places that will repair the DIP but want 400 - 600 plus to do so. I do not wish to spend that amount! So what is it that actually goes wrong with the DIP?
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Omar M. Shams
Grand Master
Username: omar

Post Number: 1405
Registered: 4-2009
Posted on Wednesday, 07 February, 2018 - 05:34 am:   Edit PostDelete PostView Post/Check IP

Dear David,
The DIP and the rev counter are two very different things. The DIP is the centre part of the cluster. The rev counter is a stand alone gauge that is part of the overall cluster. In short there are three items in the cluster. The speedo, the DIP and the rev counter. Getting the DIP overhauled will not fix your rev counter problem.
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Jim Walters
Prolific User
Username: jim_walters

Post Number: 149
Registered: 1-2014
Posted on Wednesday, 07 February, 2018 - 09:26 am:   Edit PostDelete PostView Post/Check IP

An erratic tachometer is usually the sign of an ignition fault as the signal for it is fed from the ignition control module or coil depending on year. Check and clean all wiring connections at the coil and module first. Of course the tach itself could also be faulty. What year is your SZ?

SRH8505 SRC18015 SRE22493 NAC-05370
www.bristolmotors.com
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Omar M. Shams
Grand Master
Username: omar

Post Number: 1406
Registered: 4-2009
Posted on Wednesday, 07 February, 2018 - 11:32 pm:   Edit PostDelete PostView Post/Check IP

I think David has the more modern model that has 8 coils.
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David Towers
Prolific User
Username: xtriple

Post Number: 201
Registered: 6-2010
Posted on Wednesday, 07 February, 2018 - 11:57 pm:   Edit PostDelete PostView Post/Check IP

Yes it's a 98. Specialist thinks its the whole panel that needs repair but I really don't want to spend 600 plus VAT etc on this, but it is irritating me.
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Omar M. Shams
Grand Master
Username: omar

Post Number: 1407
Registered: 4-2009
Posted on Thursday, 08 February, 2018 - 12:17 am:   Edit PostDelete PostView Post/Check IP

Replacing the whole cluster is madness .

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