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Old 03-07-2014, 03:10 PM   #1
biased99
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Default Gearbox Speedo transducer options...

Hopefully, I have the terminology right...

I have an AU2 V8 Falcon Ute, which has had a 3.9 ratio LSD installed. As a result, the speedo (and odo/trip meters) read "fast"; the speedo by ~20KPH at all speeds...

Short of sourcing a 3.45 ratio diff to restore speedo accuracy, the other option was to replace the transducer with one "geared" for a 3.9 ratio diff. Problem is that the biggest on Ford stocks is a 23-tooth version (original was 22 teeth), so the correction has meant that the speedo still over-reads by 10KPH through the range.

Question is, does anyone know of transducer units compatible with the T5 gearbox which may have been sold in the US or UK (for example) that are 24 teeth (which will restore the speedo to near-accuracy)? Or, does anyone know where I might find that information?

Thanks in advance for any/all assistance.

Michael

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Old 03-07-2014, 05:58 PM   #2
Casper
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Default Re: Gearbox Speedo transducer options...

You will need to fit a "Speedo Corrector". A little electronic box that splices in to the sender wire to the speedo and allows you to adjust it.
I bought one a long time ago but never got around to fitting it before I sold the car (had 4.11 diff in the AU).
Not sure what they are worth now, mine was $50 fully assembled.
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Old 03-07-2014, 06:07 PM   #3
biased99
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Default Re: Gearbox Speedo transducer options...

Thanks mate, sounds like the GO. Will have a hunt around for one. Cheers.
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Old 03-07-2014, 06:14 PM   #4
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Default Re: Gearbox Speedo transducer options...

Quote:
Originally Posted by Casper View Post
You will need to fit a "Speedo Corrector". A little electronic box that splices in to the sender wire to the speedo and allows you to adjust it.
I bought one a long time ago but never got around to fitting it before I sold the car (had 4.11 diff in the AU).
Not sure what they are worth now, mine was $50 fully assembled.

Just as an aside, do you remember where you got your from? There are a sh*tload of (what look like) bike-specific ones out there, but not many for cars...(Do you still have yours, perchance?)
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Old 04-07-2014, 10:55 AM   #5
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Default Re: Gearbox Speedo transducer options...

Yeah, I still have mine stashed away still in the original bubble wrap packaging. If you want it PM me and we can sort something out I'm sure.
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Old 04-07-2014, 11:21 AM   #6
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Default Re: Gearbox Speedo transducer options...

Hi Michael. I am pretty sure Jaycar sell them. Good luck.

Stu
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Old 04-07-2014, 05:39 PM   #7
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Default Re: Gearbox Speedo transducer options...

Micheal you can buy this

cheers Dean

http://www.ebay.com.au/itm/Speedomet...fa49712&_uhb=1
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