Digital speedo

September 05, 2011, 11:11:28 AM

Is there a way to make digital speedo read more than 88?

Digital speedo

Reply #1 – September 05, 2011, 12:32:59 PM

Digital speedo

Reply #2 – September 05, 2011, 12:38:32 PM

I've done a lot of those upgrades to those speedos over the years. EASY to do. You do need a steady hand,though, and be very careful soldering. I made a tiny little horse shoe shaped jumper wire, soldered it down, re-assembled it all, good to go. Then , it'll read higher than car will probably ever be able to go.

Digital speedo

Reply #3 – September 05, 2011, 03:15:32 PM

U guys are great!!!

Digital speedo

Reply #4 – September 05, 2011, 04:00:58 PM

Nahh, the guy(s) that figured the mod out are the ones who deserve the praise.

I'm just a messenger here, lol

Digital speedo

Reply #5 – September 05, 2011, 06:53:45 PM

[quo

Digital speedo

Reply #6 – September 05, 2011, 07:20:15 PM

The link is dead...Eric revamped CoolCats.net, so it may be a bit before it rights itself...

Tom, it's a pair of pins on the circuit board on the digi speedometers. It has a "W2" marked on it....just solder a small wire with insulation to those two pins and it's good to go.
When I done mine in 2006, I took 4 strands from a junk extension cord, twisted them together, stuck a piece of heatshrink on, and then soldered the ends to the pins...a quick blast with a hair dryer, and it worked until I went to an buttstuffog cluster. I sold it to a member here...not sure if he ever ran it though, last I heard, he was trying to sell my old cluster.

But anyway, it's a pretty easy mod....it's more work to open up the cluster than it is to add the jumper, IMO.

Digital speedo

Reply #7 – September 05, 2011, 07:42:36 PM

Has anyone figured out if this is possible to do on the 83-84 digital clusters?

Digital speedo

Reply #8 – September 12, 2011, 01:10:52 AM

Quote from: dragon574444;366815

Has anyone figured out if this is possible to do on the 83-84 digital clusters?

not that I know of.............

__________________________________________________ _
speedo mod
remove dash trim (keep yoru shifter in low gear to access screws easy)
remove the lower dash cover just below the column.
remove covers on steering column
have wheel tilt all the way down
undo the plastic clear dash cover (a few 5/16 screws)
remove the dash cluster assy (four torx screws-use log magnet to retrive uppper ones)
undo two connectors on the rear of cluster(may have to pop zip ties to add cable slack)
undo the little flat conn on the rt just below the amp meter
pull cluster forward as far as you can
there is a white looking cable going to the rear of the cluster
follow white cable up to cluster and undo rt side of the little gear shift spring
unhook the gear shift cable which is looped onto the a groove
remove the tiny screw that holds the shifter cable to the cluster.
remove cluster and relocate yourself to a work bench area
remove a couple of bulbs so the center flex print circuit can be layed to the side
remove three screws that hold speedo on the cluster
pry speedo open at the two clips you see holding it together
open speedo assy
gently slip off the 2 left and 2 right circuit card jumper connectors (blue)
look for a place on the lower board called "W2"
W2 will be located in a row of other markings ,, RB1, RB2 ect.
Add (solder)a wire jumper there at w2 and reinstall speedo assy
reinstall cluster and temp hook up rear two connectors
test the speedo,, could jack up the rear of the car and test speed that way.
reinstall everything back to where it was.
you now will be able to see the speedo increase past 85mph.

--------------------------
Troubleshooting the Digital Speedo
Hold the Trip Reset button in
turn the ign switch to run
advance through the tests by pressing trip reset
a steady tone and a "P" on the display says it passed.
example
first display will have
54 in upper left and step number 1 in upper right, P in the center
here are the displays for a passing speedo

54 1 P
78 2 P
E4 3 P or F
nothing 4 P or F
nothing 5 P or F
nothing 6 P or F
nothing 7 P or F
1p 8 P or F

display test prove out is step 9
=========================
Tach/Multi guage diagnostic

all codes are Hexadecimal format and can range from 00 to FF (binary 0000 to 11111111)or (decimal 0 - 128) . While active in the various modes, they can be used as a "wiggle test" to check for shorts and intermittant circuits. Anyway,, display will be in hex format.

hold the guages button in and turn the ign key to RUN
Advance through the tests by pressing the guages button.
A steady Tone and 8 bars lit is a passing test
No tone with 24 bars lit is a fail

To enter the Fuel computer self test
Press and hold the Select button atleast 5 or so seconds until the test display appears then advance thru the tests by pressing on Select over again.