[ROVERNET - UK] Tachometer and electronic ignigition P6

Ron Morey morey814 at hotmail.com
Sat Jul 3 03:28:02 BST 2004

Damien, since you have recently aquired the car I suspect, cynical me, that 
the problem was there before you bought it. I doubt it is related to the 
electronic ignition-note the email that describes the low current fault-but 
is more likely to be the tach electronics. If you know someone who is good 
in electronics get them to replace all the electrolytic capacitors in the 
tach and to check for bad connections or shorting transistors. These are 
more likely the cause. The capacitors dry with age. Any time after 10 yrs is 
not predictable. Transistors, especially old ones, dont like heat. It gets 
real hot under that dash in the sun. I did this repair to the tach in my TC 
about 15 yrs ago and have not had trouble since. It too was erratic and 
would occasionally pin or jump about. The cost of parts will be about $10 or 
less from an electronics supplier-not Radio Shack. No offence to Tandy.
Hope this helps, Ron.

>From: "Damien" <koffee at iprimus.com.au>
>Reply-To: rovernet at lyris.ccdata.com
>To: <rovernet at lyris.ccdata.com>
>Subject: [ROVERNET - UK] Tachometer and electronic ignigition P6
>Date: Fri, 2 Jul 2004 12:36:47 +1000
>Hi I was wondering if this is usual. The 3500S I recently acquired has
>electronic ignition (not sure of the brand) but either the tachometer
>isn’t working or this motor loves revs it seems to stay up in the 6000 +
>range as soon as I get over about quarter throttle. But my gut feeling
>says it is the tacho is stuffed and not the engine being just too good
>lol. Now is it the gauge or the electronic ignition. If it is the latter
>how can I fix it? The gauge has 3 connections coming out of the back of
>it, the only other one I have has 2 connections. Please help me as the
>swinging needle is driving me mad
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