FREE way to get speedo to work in th350/th400.

SUX2BU · 03-30-2006, 11:34 PM

Posted this a long time ago but since the search doesn't go that far back anymore thought i would repost it.
splice your speed sensor into your front wheel sensor. if were an M6 put in 2.76 for your gear ratio, measure your front tires and put that in as your tire size.
You will lose your ABS.
Ok if you were an A4 you put in 1.175 for your gear ratio. and front tire size for "tire size".
Oh and if you want your speedo accurate please measure the circumferance of your front tire and divide it by pi (3.14) and that is your EXACT tire heigth.

Your welcome.

SLowETz · 03-31-2006, 09:32 AM

Sux.... yer a good man.

CAT3 · 03-31-2006, 12:27 PM

Needs to be a stickie for real. B/w you and I, I'd think we answered this question too many times. Your way is good for those not desiring to keep ABS. My way, call Rossler, and get the reluctor wheel and modified tailshaft housing that accepts a VSS, bolt-on and go. You can pull your reluctor wheel off your stock trans, but its a PITA and the new wheel is only $25 or so.

SUX2BU · 04-10-2006, 01:51 AM

tttttttttttttttttt

gator's 99TA · 04-10-2006, 10:06 AM

great post!

Slow Z28 · 04-18-2006, 06:29 PM

what wire on the VSS? i haven't looked at my car in months, so is there only one wire to being with? let's get a tiny bit more specific

but just basically run a wire from the VSS up to the wheel speed sensor and splice/solder those together?

SUX2BU · 04-18-2006, 09:19 PM

there are two wires going to your VSS and there are two going to your ABS sensor.

Zombie · 04-19-2006, 11:50 AM

It should be possible to use a op amp as a buffer (such as a lm328) and keep ABS AND use it for a speedo pickup.

Slow Z28 · 04-19-2006, 01:39 PM

Quote:

Originally Posted by SUX2BU

there are two wires going to your VSS and there are two going to your ABS sensor.

I'm sorry bout this, but... so just connect those two wires then? any specific color match ups? It's a good idea that I'd like to take advantage of

SUX2BU · 04-19-2006, 09:31 PM

Quote:

Originally Posted by Slow Z28

I'm sorry bout this, but... so just connect those two wires then? any specific color match ups? It's a good idea that I'd like to take advantage of

yeah just cut off one pig tail and swap it for the other. i don't think the colors matter. its just a magnet that pulses. so it pulses either way.

vtec · 04-21-2006, 11:46 PM

would a rear speed sensor work? if so, the 4 channel abs guys could just mount another speed sensor to read one of the reluctor wheels and keep their abs.
just an idey...

ls2formula · 05-14-2006, 07:26 PM

Could you use the rearend abs sensor?The 3 channel one.

SUX2BU · 05-14-2006, 11:49 PM

Quote:

Originally Posted by ls2formula

Could you use the rearend abs sensor?The 3 channel one.

yeah but you would have to calculate the different teeth. if you count the teeth i could figure it out for you.

SUX2BU · 05-14-2006, 11:50 PM

Quote:

Originally Posted by vtec

would a rear speed sensor work? if so, the 4 channel abs guys could just mount another speed sensor to read one of the reluctor wheels and keep their abs.
just an idey...

yeah. still use the gear ratio's i stated above, but imput the tire size for the rear tire instead.

Strahley · 05-15-2006, 12:24 AM

For those of us who don't know where these wires are located, are there any pictures you have? Or any tips on how we can find this?

Luis Castellanos · 05-15-2006, 05:00 AM

suscribing...

SUX2BU · 05-15-2006, 05:01 PM

Quote:

Originally Posted by Strahley

For those of us who don't know where these wires are located, are there any pictures you have? Or any tips on how we can find this?

well the speedo wires go to the speedo sensor on the back of the original trannies. Its a black plug,
The ABS sensors are on the inside side of the hub on the front wheels. the rear sensors are on the back of the E brake backing plates (4 channel ABS/traction control cars) and on the top of the rear end (3 channel ABS/ no traction control cars.

Mr_president · 06-07-2006, 01:41 AM

UP for good man! and good info, im still confused but im sure i can figure it out!

SUX2BU · 06-08-2006, 09:52 AM

someone should sticky this. i've gotten seven pm's in the last few days asking how to do this.

Mr_president · 06-12-2006, 11:18 PM

ok to explain this a little more what i have gatherd is

1: remove the speed sensor from the tranny it has a pig tail on it!

2: on the inside of the front tire there is a sensor (ABS sensor), that you are suposed to swap the (VSS)-speed sensor into your ABS SENSOR..( ABS sensor) hents you wont have ABS anymore . who needs it anyway!

3: then if were an M6 put in 2.76 for your gear ratio, ALSO AS STATED measure your front tires and put that in as your tire size. to be accurate measure the circumferance of your front tire and divide it by pi (3.14) and that is your right tire heigth.

sux2bu correct me if im wrong thanks!