is your cel light working? here is the link http://supraforums.com/forum/showthread.php?t=447592

 

Everything else is fine, except the damn speedo.

 

Have you checked your vehicle speed sensor? A buddy of mines had a similar issue, his speedo would stop working at times, then jump to like 120 and what not.

 

Im going to try and check the cluster first and if thats fine, then i'll take the VSS out and test it with the MKIV testing procedures.

 

Does anyone know where IJ1 Plug is and if so location/color of the plug would be great...? Thanks.

 

Update,

Traced the wires for the vss into IKI and IJ1 and everything checks out fine, also swapped clusters and problem still exists. Tommorrow I plan to remove the VSS and test it per the OEM instructions, will keep you updated.

 

Haven't tested the VSS yet, but plan to tommorrow. Man i'm tired of this ****....

 

don't give up... you will be compensated later....when I do my swap...

 

Did ya fix it??

 

Supra Dr:

Well all the wiring was fine, so I got under the car to remove the VSS and I found out that I had to drop the trans inorder to get it out... so I was getting ready to R&I it when I decided to remove the wiring harness/plug that connects to the vss and check to see if the connection was out. Well I think this is part of the problem.

Cause I noticed that after I tinkered with the plug harness, the speedometer is working like its suppose to but it only goes buzzerk after about 100 mph, it doesn't go crazy like it use to at any speed. So I think this was part of my problem, but as soon as I get some time i'll drop the trans and do a complete test on the vss. At least now im able to get an accurate speed..up to about 100.

 

And why are you going over 100mph

 

Testing the speedo out and that was after midnight when traffic died out.... so

 

Yea a link would be nice.

 

Why would you drop the tranny to test te vss?