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Lancia Motor Club > Model Technical and Interest > Fulvia > Tacho Problem
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Author Topic: Tacho Problem  (Read 4255 times)
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Peter W
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« on: 17 September, 2009, 10:53:27 PM »
The tacho on my 1600HF has started to play up.  On starting it appears to read correctly for a second or so but then rapidly goes round to 6000 rpm.  At tickover it fluctuates violently from 2000 to 6000 & as soon as I build the revs up a little it reverts to 6000.  The engine is running perfectly.  I am not sure whether to look for a wiring fault or an instrument problem.  Has anyone experienced a similar problem?

Peter
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Kappa Coupe
Beta VX Coupe
S2 Fulvia 1600HF
nistri
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Posts: 564
« Reply #1 on: 18 September, 2009, 07:01:22 AM »
First, I would check carefully the electrical connection of the tacho to the coil. Second, if you are using electronic ignition, the special module between the black box and the tacho to transduce its electrical signals may be damaged (this is a common problem). Otherwise it is likely to be the instrument. Andrea
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Andrea Nistri

Ardea S2
Appia S2
Fulvia GTE
Fulvia Sport 1.3 S
Fulvia Montecarlo
Fulvia Coupe 1.3 S
Peter W
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Posts: 116
« Reply #2 on: 18 September, 2009, 11:13:49 PM »
Hi Andrea.  I am not using elctronic ignition & the tacho connection is firmly attached to one side of the ballast resistor, so it looks as though I will have to source another instrument.

Peter
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Kappa Coupe
Beta VX Coupe
S2 Fulvia 1600HF
lancialulu
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Posts: 5044
« Reply #3 on: 19 September, 2009, 08:40:42 PM »
Peter

Have you checked the earthing behind the dash?

Tim
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Its not the winning but taking part! or is it taking apart?
Lancias:
1955 Aurelia B12
1967 Fulvia 1.3HFR
1972 Fulvia 1600HF
1972 Fulvia Sport 1600
1983 HPE VX
1988 Delta 1.6GTie
1998 Zeta 21.  12v
Peter W
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« Reply #4 on: 20 September, 2009, 11:53:47 AM »
Tim

I am just about to go off sailing for a week but when I get back I will get down to a detailed examination.

Peter
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Kappa Coupe
Beta VX Coupe
S2 Fulvia 1600HF
Dilambdaman
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« Reply #5 on: 23 September, 2009, 12:18:46 AM »
Peter

I've got a spare set of black face Fulvia instruments. Any use to you?

Robin.
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Robin Lacey 3222

1932 Dilambda
1992 Y10 GTie
2012 Delta Mk3
2013 Ypsilon 846
Peter W
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« Reply #6 on: 29 September, 2009, 03:42:47 PM »
Thank you for the offer Robin,  I would like to take you up on that.

Peter
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Kappa Coupe
Beta VX Coupe
S2 Fulvia 1600HF
Dilambdaman
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Posts: 1380
« Reply #7 on: 29 September, 2009, 10:33:49 PM »
Peter,

I've sent you an email.

Robin.
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Robin Lacey 3222

1932 Dilambda
1992 Y10 GTie
2012 Delta Mk3
2013 Ypsilon 846
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