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TR4A fuel gauge (was Re: Questions, No chat.)

To: DShoop7572@aol.com, triumphs@autox.team.net
Subject: TR4A fuel gauge (was Re: Questions, No chat.)
From: ArthurK101@aol.com
Date: Fri, 20 Aug 1999 11:49:40 EDT
In a message dated 19-Aug-99 16:51:21 Eastern Daylight Time, 
DShoop7572@aol.com writes:

> 1. I have all lights working exterior but only have the high beam indicator 
>  working on any of my gauges. My Haynes manual shows trouble shooting but 
not 
>  for gauge lighting, at least I can't find it. I have no idea where the 
>  reostat is if there is one.

Sounds like a bad ground.  There is a black wire behind the dash.  This wire 
runs from ground IN SERIES to all the gauges.  Check it for continuity and to 
see whether it is connected to all the gauges.
The rheostat should be in the center switch cluster (it should be the 
left-most switch from the ignition key).  If the rheostat is bad come back to 
me and I'll tell you how to fix it.

>  2. My fuel guage registers 1/4 when tank is full . The manual shows 
trouble 
>  shooting for no reading or always full reading. 

Could be:  1) high resistance ground between sending unit and gauge  2) bad 
sending unit  3) bad voltage stabilizer or 4) bad gauge.  Suggest that you 
first check the wiring and connections.  Check the wiring voltage to ground 
throughout the circuit.  See the wiring diagram (p.209 Haynes) and fig. 10.21 
for details.  You are looking for opens or high resistance in the wires and 
connectors. This would cut down on current flow to the gauge.  If OK then 
move on to sending unit (see Joe's Curry's comments on that, the stabilizer, 
and the gauge itself. 

>  3  Both TRF and Moss don't have new Speedo cables in stock any other 
source?
>      Would anyone risk buying a used one if it's available? Does any lister 
>  have one?

I might have a new TRF one in its shipping bag.  Let me know if no-one else 
has one.  I was keeping it as a spare.  I ordered it but before I put it in 
the trouble with my speedo cleared up.

> 4. By the way the car is a 67 TR4a

Right.  Hope this helps.  Cheers.

Art Kelly


> 

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