Fuel gauge issues

[Polly Grigora]

Nicely done, not for the faint-hearted

[Tyre Smoke]

I took the 'buggerit' approach.

But, as with all things TVR, they're not all that complicated, but yeah, you do need to be gently forceful if you know what I mean?

[sixor8]

Ah, a Discworld favourite, foul ole ron.

Known for the phrases "Bugrit!" and "Millennium Hand and Shrimp"....

[indigochim]

I think I'm suffering a very similar issue, fuel gauge reading full most the rtime only dropping to 3/4 full when empty. I've tried a 2nd sender and get the same result.

Could someone sanity check my test before I order a new gauge with a 4-6 week lead time. I took the gauge out of the car and wired it as per the image. With the float moving through it's full range of travel it still reads full dropping to 3/4 when the float is at empty.

[Tyre Smoke]

That's correct.

But...

Are you sure it isn't the sender? Have you a multimeter? If so, set it to ohms and connect across the sender (just the sender, not connected as per your diagram) and it should read 200-240 'empty' and 10-0 'full' and obviously in between as you move the float up and down. If it's all good, then it's the gauge.

Eta if you take the gauge apart, a good auto electrician should be able to fix it cheaply.

[indigochim]

Tyre Smoke said:

That's correct.

Great thanks

Tyre Smoke said:

Have you a multimeter? If so, set it to ohms and connect across the sender (just the sender, not connected as per your diagram) and it should read 200-240 'empty' and 10-0 'full' and obviously in between as you move the float up and down. If it's all good, then it's the gauge.

I have a meter but little knowledge. Yes it looks to read from 4.9 full to 200ish empty. I've also tried a 2nd sender which reads the same on the gauge.

Tyre Smoke said:

Eta if you take the gauge apart, a good auto electrician should be able to fix it cheaply.

Hmm, looks pretty permanently crimped. How did you open yours without leaving it in a mess? Blade/screwdriver around the back lip?

[Tyre Smoke]

Yes, but very gently. You will be able to prise it far enough without damage. But make sure you don't have caffeine jitters or shakes from last night's session!! Take your time.

Needle just pulls off, face is held in with two plastic lugs tweezers are a good idea.

I did both fuel gauge and my speedo when it stuck at 100k.

If you do it right, it's not noticeable once they're back in against the fascia.

[indigochim]

Brill, thanks I've nothing to lose I guess.

[keeling54]

ETB instruments in Southend may be able to help you out, it's certainly worth giving John Gare a ring, they supplied gauges to TVR originally and was very helpful in sorting out my broken speedo.

[Belle427]

And
https://www.caigauge.com/
https://www.speedycables.com/

Edited by Belle427 on Friday 24th June 12:50

[indigochim]

Thanks all, I'd already contacted Caebont, who supplied my oil pressure gauge and they're cheaper for a brand new one than the usual breakers want for a battered 2nd hand one. It's just the time to take to order. I think I'll try and fix mine but order a new one too.

[QBee]

I bought an oil temperature gauge off them a couple of years ago - don't remember it taking that long to arrive.

[indigochim]

I've completed the order this morning so I'm hopeful. The oil pressure gauge they did me last certainly didn't take too long. I think considering what the breakers charge at under £60 delivered they're pretty reasonable.