Fox T-Bird/Cougar Forums

Technical => Engine Tech => Topic started by: Stratfellow3 on April 17, 2006, 11:03:40 PM

Title: speedometer limit at 85 will that trick work on 86 continentals?
Post by: Stratfellow3 on April 17, 2006, 11:03:40 PM
I have 86 continental and i just wanted to see if that mod to make speedometer go past 85 is same in my car or if not if anyone knows where that spot to use jumper wire is for my car?
Title: speedometer limit at 85 will that trick work on 86 continentals?
Post by: thunderjet302 on April 17, 2006, 11:16:51 PM
Hmm I don't know what the speedo looks like in a 86 Conti. Can you post a pic of it and the back of it as well? Perhaps some of the electrical people will chime in :D
Title: speedometer limit at 85 will that trick work on 86 continentals?
Post by: Stratfellow3 on April 18, 2006, 12:43:32 AM
Here are images of speedometer


(http://i51.photobucket.com/albums/f370/Stratfellow3/MVC-194F.jpg)

(http://i51.photobucket.com/albums/f370/Stratfellow3/MVC-192F.jpg)
Title: speedometer limit at 85 will that trick work on 86 continentals?
Post by: 84t-bird on April 18, 2006, 12:46:17 AM
what is this mod and how do you do it. i hate that my speedo ends at 85
Title: speedometer limit at 85 will that trick work on 86 continentals?
Post by: Stratfellow3 on April 18, 2006, 12:50:13 AM
well it works for cougars and t-birds, but my car too has digital that normally stops at 85 so i am asking if anyone knows for sure if its same location to solder jumper wire

Here is the link in pic it shows place to solder jumper wire for unlocking speedo!
http://www.coolcats.net/tech/advanced/199speedo.html

just hopes it can work on my car too!
Title: speedometer limit at 85 will that trick work on 86 continentals?
Post by: SSX on April 18, 2006, 02:10:35 AM
About the easiest way to tell would be to pop out the dash and see if the internals are similar.
Title: speedometer limit at 85 will that trick work on 86 continentals?
Post by: Master_xzavior on April 18, 2006, 11:04:37 AM
:iagree:
Title: speedometer limit at 85 will that trick work on 86 continentals?
Post by: Thunder Chicken on April 18, 2006, 02:30:01 PM
I can pretty much guarantee that the internals will be completely different. The 84 and older models use a vacuum flourescent display (emits its own light, no backlight required) while the 85 and newer use LCD (requires backlight). VFD operates at a high voltage so there'll be an inverter of some sort in the pre-84 dash as well, while LCD uses a very low voltage. The display driver IC would be totally different.
Title: speedometer limit at 85 will that trick work on 86 continentals?
Post by: Stratfellow3 on April 18, 2006, 02:43:15 PM
the mod says 85-88 t-birds and cougars? so wouldnt this be for LCD style display, or did cougars and t-birds still not use newer style til past 88?
Title: speedometer limit at 85 will that trick work on 86 continentals?
Post by: t-bird85 on April 18, 2006, 05:30:59 PM
Quote
Now the physical changeover of the speedo from 85mph to 140mph is fairly simple. But by no means does it imply that your car will actually attain those speeds. This mod is simply to make your car have a higher reading and does not warrant excessive speeding for usage!

I love this disclaimer on coolcats page.
Title: speedometer limit at 85 will that trick work on 86 continentals?
Post by: bondocougar on April 18, 2006, 06:57:04 PM
Does the speedo actually have a 3rd digit?

Does it have Metric mode, and if so can you exceed 136 km/hr?

If the answer to one/both is yes, I bet there is somewhere hidden in there a configuration set point that could be changed.
Title: speedometer limit at 85 will that trick work on 86 continentals?
Post by: Thunder Chicken on April 18, 2006, 07:13:33 PM
Quote from: Stratfellow3
the mod says 85-88 t-birds and cougars? so wouldnt this be for LCD style display, or did cougars and t-birds still not use newer style til past 88?
You misunderstood, young feller me lad ;) The speedo in your Conti is VFD, like the older T-Bird/Cougars. I think the Linkin's (even the Mark VII's and Town Cars) used VFD displays right up until they were discontinued. The W2 mod will only work in 85-88 LCD displays, and even then, likely only in T-Bird/Cougars (and not, for example, Probes). Like Bondocougar says, there is probably something on the circuit board that allows for the modification. They key is finding that "something" without shorting out and destroying your display.
Title: speedometer limit at 85 will that trick work on 86 continentals?
Post by: Master_xzavior on April 18, 2006, 07:16:52 PM
could it be possible theres a spot in there labeled W2?
Title: speedometer limit at 85 will that trick work on 86 continentals?
Post by: Stratfellow3 on April 18, 2006, 07:48:44 PM
yes it does have the third digit 1, and not sure on the exceed 136, i have switched so that it is 100something in km/hr to scare a gullible friend
Title: speedometer limit at 85 will that trick work on 86 continentals?
Post by: Stratfellow3 on April 18, 2006, 07:49:42 PM
well if 136 is about 85mph then i have gone past 85mph and thats obviously where it stops reading and car keeps going
Title: speedometer limit at 85 will that trick work on 86 continentals?
Post by: Thunder Chicken on April 18, 2006, 10:23:12 PM
Quote from: Stratfellow3
well if 136 is about 85mph then i have gone past 85mph and thats obviously where it stops reading and car keeps going

If your display stops at 136km/hr it's likely it is not modifiable at all. The key with the 85-88 clusters is that while Americans were stuck with an 85 MPH limit, Canadians got 199km/hr (aprox. 120 MPH). They're all the same cluster, though - even though all 85-88 clusters only read up to 85 MPH they are also all capable of reading up to 199km/hr, whether the car was sold in USA or Canada - it's just a matter of pressing the english/metric button. What Bondocougar figured out is that if the cluster is capable of displaying speeds higher than 85 by simply pressing a button then the 85 max was not a limitation of the cluster - Ford purposely dumbed it down to 85. Bondocougar figured out how to "un-dumb" it :D. Before the W2 mod the only way to find out how fast you were travelling over 85 was to switch to metric and convert the reading into MPH.

The 85 max was something the big three came up with in the 70's as a fuel economy measure (smart, huh?) and in the case of Fords, stayed in effect into the late 80's. They only did it in the US, though - in addition to the 199km/hr limit we Canadians got with the digital speedo, even our buttstuffogue speedos (as installed in Turbo Coupes, XR7's and 88 Sports) were calibrated to 200 km/hr (120MPH).
Title: speedometer limit at 85 will that trick work on 86 continentals?
Post by: Stratfellow3 on April 18, 2006, 10:37:18 PM
ohhh i see, okay well next time im that fast ill pop over to km/hr and see if that reading still increases