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Location:
Surrey Hills, Melbourne
Registered:
August 2003
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MA61 Digi Dash problem...
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Sun, 15 February 2004 13:45
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Honestly officer, I was doing 0kph, see, even the speedo says I was only going 0kph...How could I possibly be speeding?
Hi,
The digital dash on my supra seems to have given up somewhere...It works but it only reads 0 regardless of the speed of the car. Rest of the dash works fine AFAIK just the speedo...
Any ideas what it could be? Any possible quick fixes or am I gonna have to pull the whole dash out and get a crash course in automotive electronics on the fly?
Any suggestions appreciated...
Cheers,
Ben
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I supported Toymods
Location:
south of the big smoke
Registered:
May 2002
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Re: MA61 Digi Dash problem...
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Sun, 15 February 2004 22:06
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check ya speedo cable as far as i know these dashs are mechanical
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Registered:
August 2002
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Re: MA61 Digi Dash problem...
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Sun, 15 February 2004 22:07
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A few possibilities:
Speedo cable has come lose at the back of the dash
Speed sensor has died
Speedo gears have died
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Location:
Adelaide
Registered:
September 2003
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Re: MA61 Digi Dash problem...
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Sun, 15 February 2004 22:16
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Try here
http://www.cygnusx1.net/supra/library/TSRM_MKII/be /BE_027.html
Look at the fault finding section for the Electronic guages.
I have something similar in mine, but it is intermittent, but with another dash installed it is fine, so it may be the speed sensor which I beleive is in the dash, but haven't found it yet.
One of the drivers to get the analogue dash installed !!!!
Cheers
Michael B
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Registered:
August 2002
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Re: MA61 Digi Dash problem...
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Sun, 15 February 2004 22:21
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The digi dash is all class 
Its all about reving well into the redline of ye old 5me 
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Location:
Brisbane
Registered:
May 2002
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Re: MA61 Digi Dash problem...
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Sun, 15 February 2004 23:09
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Almost certainly a loose or broken speedo cable. I had this happen to me a couple of times.
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Location:
Canberra
Registered:
October 2002
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Re: MA61 Digi Dash problem...
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Mon, 16 February 2004 02:41
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I have the same problem in my GZ20 soarer, are these dash's similar?
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: MA61 Digi Dash problem...
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Mon, 16 February 2004 03:48
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there's an "L" bend in the speedo cable - and this is almost always where the ma61/ra6x/sa6x cable breaks.
You'll also be happy to know these are hard to come by, and expensive as hell from toyota 
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Location:
Adelaide
Registered:
September 2003
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Re: MA61 Digi Dash problem...
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Mon, 16 February 2004 04:31
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Hmmm, interesting.
I had (actually have) the problem of an intermittent '0' reading in my digi dash.
As part of the fault finding, I installed another dash and the speedo worked without any problem, so I am assuming that the speed sensor in my original dash is a bit corrupt.
But having begun the conversion from Auto to manual, I disconnected the so called 'speedo elbow' and will have a good look to make sure that this is connected properly and try running the original dash again just to eliminate the above discussed possibilities
Cheers
Michael B
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Location:
Brisbane
Registered:
May 2002
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Re: MA61 Digi Dash problem...
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Mon, 16 February 2004 15:19
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Hmmm, neither of my Supra's had this L-bend you speak of...
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Location:
Adelaide
Registered:
September 2003
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Re: MA61 Digi Dash problem...
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Mon, 16 February 2004 21:11
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Maybe it is just an auto part ?
My car was an auto (it is now sitting on the garage floor along with a shit load of oil  - I hate farking auto trans)
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Location:
Brisbane
Registered:
May 2002
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Re: MA61 Digi Dash problem...
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Mon, 16 February 2004 23:49
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Well both my Supras were originally auto, and no L-bend!
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Location:
Adelaide
Registered:
September 2003
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Re: MA61 Digi Dash problem...
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Tue, 17 February 2004 00:31
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Hmmmm, the mystery deepens.
Maybe a year dependant ?
Mine is a 11/83 bodyshell with a 1/84 Aus compliance plate.
Maybe it is just the way of the world !!!
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Location:
Brisbane
Registered:
May 2002
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Re: MA61 Digi Dash problem...
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Tue, 17 February 2004 04:59
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Both mine were mid 84 build from memory, so that may be an explanation. 
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: MA61 Digi Dash problem...
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Tue, 17 February 2004 07:02
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My 86 Cressida has the bent one.
But the 82(ish) parts car me and frank had, had the cast alloy elbow.
ie, it wasnt a bent pipe like my Cressidas, but a sort of 2 piece thingamajig
The plot gets deeper
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: MA61 Digi Dash problem...
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Tue, 17 February 2004 07:03
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That said, my money is on a dodgy speedo cable as listed above
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Location:
Surrey Hills, Melbourne
Registered:
August 2003
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Re: MA61 Digi Dash problem...
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Sun, 22 February 2004 14:48
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Hi all,
Thanks for all the suggestions...I pulled the interior apart a couple of days ago and it was the speedo cable.
I jacked the car up on stands to see if the cable turned with the wheels turning while the dash was disconnected...Sure enough, it wasn't turning so i figured the problem was somewhere further along the cable...
Trace the cable back to the box, pull out the speedo gear to find some of the plastic teeth have worn away...problem diagnosed!
Funnily enough, I had a corona box lying around and substituted the said gear. They had the same amount of teeth and were visually the same so I put it in and it seems to work ok. End of problem, unless I get a speeding fine telling me otherwise 
Thanks a lot people, I've said it plenty of times before but these forums are full of useful information and previous experience. Everyone seems nice enough too so putting forward problems is no daunting matter...
Cheers,
Ben
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