AHC question...can I raise just one front corner?

[flintknapper]

1999 LX470
186K

My Drivers side front is 1" lower than the Passenger side.

I am soon going to change the fluid, replace the rear coils, adjust the TB's up front as necessary and check the balance front to back once I get all the necessary parts and Techstream software.

But in the meantime....I was wondering if adjusting height sensor on that corner will bring it up (assuming I don't have a weak/bad globe on that corner)?

Thank You in advance,

Flint

 

[Somebodyelse5]

I am not sure about AHC, but i know that my '99 LC measured about 3/4" lower on the DS when i did my 'pre lift hub to wheel well measurement' May just be a TB issue?

either way, here is a bump for you, someone will know!

 

[HaiiroKuma]

Another bump. I have a similar issue and tried to adjust sensors but it didn't stick. It looked right just after adjustment but went back to lower afterwards. It may just need some more tweaking or tb issue or weak actuator on that corner. I'd love to get feedback as well!

 

[ihadmail]

Yes. You adjust left/right bias by adjusting up on the low side torsion bar while adjusting down on the high side torsion bar.

Once you achieve cross level, then it's time to raise both torsion bars equal amounts until you get your neutral pressures in spec.

Hope this makes sense. You'll need techstream to get your pressures right again.

 

[ihadmail]

Also, if you haven't ordered a cable and techstream yet, the cheapest place I've found to get the correct firmware cable is on aliexpress.com. Search there for "mini vci 2.0.4" there is only one result and it is $30 shipped. The older firmware cables that are all over Amazon and eBay don't have full features for adjusting some of the customize menus. The firmware 1.4.1 will work for reading pressures though.

 

[ihadmail]

Also, this thread here: Definitive list of AHC maintenance items

Has a ton of information in it about AHC and how it works and how to adjust/diagnose lots of issues. Pay special note to the posts by @PADDO @uHu and myself. My posts there are mostly reiterations of things Paddo has put out in other threads.

 

[HaiiroKuma]

Anyone in Houston area that already has techstream and cable looking for a quick buck?

 

[LandCruiserPhil]

Anyone in Houston area that already has techstream and cable looking for a quick buck?

Got Amazon Prime?
Order today(Saturday) and get it tomorrow (Sunday)
And you dont even need to leave your home

 

[uHu]

1999 LX470, 186K
My Drivers side front is 1" lower than the Passenger side....
...But in the meantime....I was wondering if adjusting height sensor on that corner will bring it up (assuming I don't have a weak/bad globe on that corner)?

The ahc doesn't do anything with the L/R lean, it uses the average of the two front sensors to set the front height.
To lift one side, you just turn the torsion bar. It's only the steel springs which balance lean L/R, when stationary.
A bad globe does not affect the height levels at all. The ahc system does not look at the state (or presence) of globes at all.

 

[flintknapper]

Also, this thread here: Definitive list of AHC maintenance items

Has a ton of information in it about AHC and how it works and how to adjust/diagnose lots of issues. Pay special note to the posts by @PADDO @uHu and myself. My posts there are mostly reiterations of things Paddo has put out in other threads.

THANK YOU gentlemen.

That not only answers my question, but also points me to sources of more information.

Nice not to have had someone tell me to 'search' !

Good job, I really appreciate your time and efforts.

Flint.

 

[planomateo]

@flintknapper I recently purchased a 2004 LX and replaced the suspension fluids. Not sure if its normal to see this change, but my numbers are now much closer to stock. I'm going to be replacing a links/bushings within the next month or so time permitting. Too much travel and other things going on at the moment, my to-do list on the LX is getting somewhat long.

Prior to fluid swap
front pressure 4.1
rear pressure 8.2

After fluid swap
front pressure 7.5
rear pressure 7.1