I have one I am not planning on installing. Pm me if you're interested.
Yellowbox Speedometer Correction Install (1 Viewer)
- Thread starter TexasCrane
- Start date
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Sent you a PM.
I had an older revision on my 80 w/ 4.88s. I noticed a small bit of speedometer lag that only seemed to be an issue in certain conditions when in cruise control. The lag would sometimes cause a small speed oscillation as the speed controller fought with the lag. I didn't have the cruise issue prior to install, but I since sold the vehicle and didn't try to remove to make sure this was indeed the root cause. In reality, nobody noticed in the car but me, but I am just ultra-sensitive to that since I do vehicle calibration for a living.
Anyone else have a similar experience on either a 80 or 100? maybe the newer versions fixed the lag?
92LXAZ
SILVER Star
Well son-of-a-jackal, you know I do have that oscillation when in cruise. I didn't notice it until last year on our road trip. Didn't even think of the Yellowbox until your statement. I always thought the servo was going out or something was wrong with the control itself. Very intuitive, thank you. I'll see if I can remember to test it out on of these days.
Just installed mine after dropping from a 315 to a 285 tire. Speedo and odo were off about 6-7%.
Have the v5, plug & play, and ordered it with a 2m controller cable. Wrapped visible wires under truck with 3M tape, and covered all with loom. Came in through driver floor drain plug, and mounted it above driver fuse block. Quick access for future adjustments.
Simple install, simple adjustment, fair price. Highly recommended.
Thanks to all on this thread for the help.
Have the v5, plug & play, and ordered it with a 2m controller cable. Wrapped visible wires under truck with 3M tape, and covered all with loom. Came in through driver floor drain plug, and mounted it above driver fuse block. Quick access for future adjustments.
Simple install, simple adjustment, fair price. Highly recommended.
Thanks to all on this thread for the help.
is this adjustable of you choose to change tire sizes?
- Thread starter
- #27
Yes.
thanks @TexasCrane . Just ordered one! I never had an issue with me actually going faster than the vehicle showing before re-gearing, but now that I am showing going faster than I actually am, and racking up more miles than actual I needed to nip that in the butt real quick!
jLB
Another one followed me home. Can we keep it?
You can use something like this to get a ballpark idea of the adjustment
Tire Size Calculator - Compare Tire Sizes | Tacoma World
You'll probably have to fine tune it, but that should get you close
Tire Size Calculator - Compare Tire Sizes | Tacoma World
You'll probably have to fine tune it, but that should get you close
finalllllyyyyyyy installed this after having it for 3 months, I know, I am ashamed of myself. Anyways, I am not sure I am adjusting it correctly. I ran it up through my center console. Is it supoposed to be adjustable on the fly while in motion or just while stopped? I am running 4.88 with 305, and my speedo shows me going about 5 miles faster than I actually am. Thanks for the input.
jLB
Another one followed me home. Can we keep it?
You should be able to put it into programming mode, while stopped, by pressing both + & - buttons for 5 seconds & lights flicker. You may be able to adjust while moving, but I think you have to put it into programming mode while stopped.
By my guesstimates and math:
If my memory and math is correct, this would mean your correction should be around 105.7%, which would read flashed as 10570 on the yellowbox.
What correction ratio does your unit show (via LED flashes) when stopped?
(red quick flashes = number, separated by red long flashes = next digit, for a total of five digits)
By my guesstimates and math:
305/65R18 tire adjustment ~7.8% (speedo lower)
4.88 (on a 98-02) gear adjustment ~13.5% (speedo higher)
Adjustment 13.5-7.8=5.7 (speedo higher)
4.88 (on a 98-02) gear adjustment ~13.5% (speedo higher)
Adjustment 13.5-7.8=5.7 (speedo higher)
If my memory and math is correct, this would mean your correction should be around 105.7%, which would read flashed as 10570 on the yellowbox.
What correction ratio does your unit show (via LED flashes) when stopped?
(red quick flashes = number, separated by red long flashes = next digit, for a total of five digits)
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jLB
Another one followed me home. Can we keep it?
It's going to take some pressing (and holding) of the "-" to get back toward 100.00% (10000 or no adjustment)
A long hold of the adjustment button should increment by 1% per sec. A quick press should adjust by 0.01%
A long hold of the adjustment button should increment by 1% per sec. A quick press should adjust by 0.01%
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Ahhhhh!!! Gotcha. Is there a proper way to take it out of the calibration mode?
Bumping an older thread as I just installed my yellowbox today. I noticed a lag when stopping before the gauge reads "0", despite being stopped for 2-3 seconds. The opposite occurs when taking off from a stop. 2-3 into travel before it picks up. Is this what you both were experiencing? And with the cruise control issue, were your speeds actually varying or just the reading on the gauge? I used cruise to hold my speed constant while making adjustment and noticed no issues but would be concerned if they came up. I'm a cruisecontrolaholic.
