Diagnostic Long shot...

Tacoma lovers and fellow forum browsers lend me your knowledge!

I have a diagnostic long shot I figured I would post up for the internet to give a whack at before I went and chatted with a dealer.

So here it is:

My rig is a 2015 TRD OR 6-SPD manual transition with the following (possibly) pertinent upgrades:
- Method NV305 Wheels 16" 4.5" backspace & 0 offset dressed with 265/75/16 Duratraks
- OME Coilovers 90000 struts & 886 coils with a 5mm spacer on the driver side for lean (no steel front bumper but front IFS RCI skid)
- SPC LR UCA's

The problem: This has happened to me 3 times total now in the past year and I will do my best to describe it so bear with me. I experience something rather terrifying when going around sharp(er) right-hand turns at speeds in the 40-60 MPH range when compression on the left front wheel seems to be at a notably high level. The best way I can describe it is the front left wheel seems to lock up for a period of 1-2 (terrifying seconds) almost as if either A) the ABS is kicking in or B) the tire is rubbing on the UCA. It happened most recently yesterday when I was coming into a down-hill graded right-hand turn hard and was decelerating/turning right. This time I noted that the brake pedal seemed extremely stiff until (what I believe was) the compression on the front left wheel decreased enough for the problem to stop and suddenly I had full control of the vehicle again and it drives perfectly fine. When this does occur however there is an extremely strong pulling of the vehicle to the left which for obvious reasons is very bad mkay. The last time this happened I was actually accelerating hard through a longer uphill graded right turn with again lots of compression on the driver's front wheel closer to 60MPH. This oddly (and thankfully) does not happen at interstate speeds and I can't for the life of me seem to recreate it. Lastly, the first time it happened I never actually felt like I lost control of the vehicle and it sounded much more like a rubbing of the tire on the UCA. This was on a longer, gradual right-hand turn highway on-ramp I was booking it through.

Some things I've checked:
- Doesn't appear to be any pinched ABS wires or brake lines on full lock either way on the front wheels.
-Power steering fluid is fine
-There does appear to be a minor polished spot on the left UCA which is of great concern for tire rubbing but the tire is nowhere near the UCA even when I try to recreate some of the compression by running up the driver side on a ramp. Also I feel like this would NOT account for the stiff brake pedal. There is also NO MARKING on the tire itself.
-No error lights generated with this and I don't believe the ABS or traction control lights ever came on during the incidents but my dinner plate eyes were locked on the road and trying to control the beast.

Any and all thoughts are greatly appreciated. Again I have NOT been able to recreate this by trying it's only happened when I'm really pushing the rig through corners, and I know the simple answer would be DON'T DO THAT but I'd rather fix the problem. And it's also a 6-speed with a SS. How can I not drive it like a race truck?

Cheers, Nick in VT.

 

Try a VSC calibration
https://www.tacomaworld.com/threads...ibrate-your-vsc-computer-the-easy-way.467485/

 

Interesting I will give that a go. Have never been done to my knowledge. I've never seen those lights described by the OP though.

 

This is the answer.

 

And the wire gauge doesn't matter correct? Just whatever I have lying around? It's gotta fit in there obviously

 

Made it work with an old micro usb cord stripped down. Hopefully this does the trick. Thanks gents!!!