Another sticky Odometer!
Discussion
Driving home one night last week I watched my Chim turn 50,000 miles. A few minutes later I saw the odometer was still showing 50,000 miles and when I got home ... (I hate repeating myself). Looks like it's stuck then!
Having searched the Forums for previous threads, I see lots of 'They all do that Sir' comments - and numerous suggestions that it'll sort itself out in time. The most amusing of which was
simon@63 said:
The speedo that sticks every 9999 miles, and shows 40mph while I'm standing still,
That's nothingI had a test drive in a Tamora that showed 220 mph stationary...
Joking aside, several outings later it still has not budged. Resetting the trip meter has not freed it, not has any tapping of the glass or dash surround.
Can someone tell me how easy it is to get the speedo out, so I can manually help it roll-over, or is it a job for an Indy? Chim's going to Austec on 9th November worst-case...
groucho said:
Why does it do it in TVR's? I have never heard of it happening in any other make of car.
Beats me. Because the Odometer's are crap, maybe?
It won't happen in the new cars as the odo is electronic...
You've got to admire TVR. Their designs get better and better in terms of understanding what they can do to a high quality and what they can't.
Once they understood they couldn't make a glovebox that stayed closed - they designed interiors without a traditional glovebox! Problem solved.
Very clever...
Thanks for your input fella's.
Am happy to report today that judicious thumping
of the dash top (on the move) last night seemed to jiggle the digits enough to have them start recording again. Result! I was on my way to the local Ferrari meet at the time, so perhaps the Chim just thought it'd show me it wasn't as quirky as the Italian lot it went on to share a car park with!
So that's another quirk of TVR Chimaera ownership behind me, what next I wonder...!? Oh yeah - why does my interior light not come on when I open a door?? It works if put in the permanently on position, just not any otherwise...
gbbird said:
I;ve just had my second speedo module fitted within the year on mine. Always sticking. Does your speedo not work either?
The speedometer was fine... the odometer got to 49999 and then stuck rolling over to 50000. The trip meter packed up simultaneously too. Both are fine now though, so it sounds as though I am lucky not to have had to replace the speedometer, unlike yourself!
I had this happen on my chim a few times as well when reaching round thousands, I used to be flick the reset button thingy (needed a quite a few go's some times) just to get a little movement in the wheels and then it would be alright.
And guess what it then happend in the cerb when it hit the round thousand for the first time, a few flicks got it going again.
Not very technical but it worked !!
And guess what it then happend in the cerb when it hit the round thousand for the first time, a few flicks got it going again.
Not very technical but it worked !!
For future reference - this works - even if it's jammed pretty hard and clobbering the dash does not help..... I've had to do it at least once on both TVR's I've had....
Take out speedo from dash.... add and earth cable from the speedo to the earth point behind the dash (so that the speedo will be eletrically connected on an "umbilical" cord.) Now jack up rear wheels and put car in a high gear - fire up engine and engage clutch so wheels spin in mid air and pulses are being sent to speedo..... now keep tapping speedo against the padded dash as hard as you dare - it'll flip over after a bit - job done.
Take out speedo from dash.... add and earth cable from the speedo to the earth point behind the dash (so that the speedo will be eletrically connected on an "umbilical" cord.) Now jack up rear wheels and put car in a high gear - fire up engine and engage clutch so wheels spin in mid air and pulses are being sent to speedo..... now keep tapping speedo against the padded dash as hard as you dare - it'll flip over after a bit - job done.
On mine the sliver bezel at the front is made of aluminium. I just prised up the edge carefully until I could get it off. Then by removing the screws from the back of the unit, the innards come out in one piece. Basically the same as any old-school speedo.
From there, you can see the little electric motor that drives things. If you carefully turn the shaft by hand, you can get the numbers to click over.
Once its back in the car, you can't see the marks on the bezel.
From there, you can see the little electric motor that drives things. If you carefully turn the shaft by hand, you can get the numbers to click over.
Once its back in the car, you can't see the marks on the bezel.
ZooMattTVR said:
For future reference - this works - even if it's jammed pretty hard and clobbering the dash does not help..... I've had to do it at least once on both TVR's I've had....
Take out speedo from dash.... add and earth cable from the speedo to the earth point behind the dash (so that the speedo will be eletrically connected on an "umbilical" cord.) Now jack up rear wheels and put car in a high gear - fire up engine and engage clutch so wheels spin in mid air and pulses are being sent to speedo..... now keep tapping speedo against the padded dash as hard as you dare - it'll flip over after a bit - job done.
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