for some reason ever since i bought the car the cruise control and the lockuo converter wont work anyone have any ideas someone told me they are connected somewhare?

 

What year car do you have? Could be your VSS Buffer box because it sends the signal to you computer for the Lock-up of your converter and also it sends signal to your cruise control.....Just an idea maybe someone else has something to say about it....

 

Does the speedo work? Tg's used a mechanical and electronic speedo's. With a mechanical cable driven speedo the cable drives the speedo as well as a little Hall generator in the speedo head. Pulses are sent to the VSS buffer module from the Hall unit and then to the ECM for control of TCC, EGR and cruise. Electronic speedo's are basically the same, however at the trans there is a Hall unit in place of the cable drive assy and the pulses are sent to the VSS buffer for the electronic speedo, TCC, EGR and cruise. Normally without a VSS signal the SES light will come on after about 10 min of driving over 35 mph or so.

 

speedo works but the tach only works up to 3000rpm wont go any further and i have a 1989gta.whare is this box your talking about could you tell more and how to fix it?

 

It would be on the Passengers side by the computer Here is a pick of it.......

 

I beleave that your buffer should be the same part number as the one in the pick if so you can get one out of a junk yard from a mid 80's olds Delta 88 for shure don't know about any other models but that is the one I use for my 91 gauge cluster and it works great.

The green wire is 4000ppm that lead goes to you speedo the red wire goes to you cruise the brown goes to you computer for the lock-up and other things both red and brown are 2000ppm

 

i know what your talking about i have taking the computer out a couple of times i put a new one in i saw that piece do you think thaat will fix my problem? noone has ever even told me about that go figure lol.oh yeah if i find one it has to be the same part# right? and it will just plug right in right?

 

if it was the VSS butter (also called the 4 out buffer) your speedo wouldn't be workign as well

 

well so much for that idea i was getting all happy thinking maybe that was it son of a b.well any other ideas?

 

Well the resister could be out for the 2000ppm.....It is very cheap to get one I think it is worth a shot.....

 

while it does seem unlikely, one of the buffer outputs could have failed. the junkyards will probably just about give them away given the number of people that actually buy them, and it's only 5 minutes worth of work to try, so i say go for it.


(also, your 89 will have an electonically driven speedometer)

 

and while you have things apart check the wires for continuity

 

i want to thank everyone for the help i appreciate it.i will try the buffer maybe i will get lucky who knows. its my tach that doesnt work not the speedo o and what is a 2000ppm? resistor?

 

pulse per Mile

 

chris what is the 2000ppm and how do i fix it or replace it?