[TR] Fuel gage / sending unit issue - Spit bodied GT6

[Dave Connitt]

Hi Albert,
I have a TR4A fuel sending unit at home and will measure the resistance range tonight and get back to you. First thing to go is the memory and I forgot what the second thing is😁.
Dave Connitt 

Sent from my iPhone

> On Oct 12, 2022, at 12:27 PM, DAVID MASSEY <dave1massey at cs.com> wrote:
> 
> 
> I'm not sure but I seem to recall that 67 ohms is in the normal range for the sending unit.  I suspect the gauge is faulty.
> 
> If you have a spare or if you know someone with a spare you can try swapping it out.
> 
> Dave 
> 
> 
> 
> 
> -----Original Message-----
> From: aribert neumann <aribertn at gmail.com>
> To: DAVID MASSEY <dave1massey at cs.com>; triumphs at autox.team.net
> Sent: Wed, Oct 12, 2022 6:40 am
> Subject: Re: [TR] Fuel gage / sending unit issue - Spit bodied GT6
> 
> Dave:
> Thanks for the reply.  The gage drops to zero when either wire is removed from the sending unit.
> 
> All:
> Any info on sending unit resistance (even from other Triumph lines such as the TR4, 250, 6) would be appreciated - I am guessing that the same supplier (Smiths) was used for multiple lines and that the values would be somewhat similar.
> 
> On Wed, Oct 12, 2022 at 7:29 AM DAVID MASSEY <dave1massey at cs.com> wrote:
> What happens when you leave the wire off of the sending unit?  Does the gauge still go full-scale or does it read zero?  It could be a short in the wiring.
> 
> Dave 
> 
> 
> 
> 
> -----Original Message-----
> From: aribert neumann <aribertn at gmail.com>
> To: triumphs at autox.team.net
> Sent: Tue, Oct 11, 2022 7:46 pm
> Subject: [TR] Fuel gage / sending unit issue - Spit bodied GT6
> 
> Greetings all.   Long time since I've posted, my car has, up till yesterday, been behaving itself nicely.   Yesterday the driver's door glass dropped off of the window regulator as I was trying to wind up the window prior to backing out of the garage.  Then later the same day the fuel gauge suddenly displayed well past a full tank.  The tank is at about 1/3 to 1/2 full.  
> 
> The water temp gauge is reading correctly so I am thinking the bimetal voltage stabilizer is OK.  I checked the connections at both the tank and gage.  I checked that the ground lead at the tank was grounded.   I am measuring about 67ohm across the sending unit terminals.   The Bently manual is worthless on this subject - simply stating that there is no repair to either gage or sending unit and replacement is the repair method.  No resistance values given for empty and full tank.  Frustrating.  Before I order a fuel tank sending unit, does anyone know what the ballpark resistance values might be?   What am I forgetting to check?   
> 
> TIA.   Off in digest mode awaiting your answers.
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