Ride height with AHC, and tire presure?

[Cruisera100]

I saw it here somewhere ,but now I can't find it now .What is the distance from the center of the wheel to the fender lip on a standard 2000 mod, ahc 100 ? Front and rear.
I changed all the bushings and balljoints in the front , and rear end. 52 cm front , and 52 cm rear ,is what I have now. The ahc will not settle in high , so I suspect I might have cranked the torsjon bar a little to much. I also see folks here run 35-40 psi in the tires. The packard in mine says 32 psi. (275/75/16). but it's 14 years old ,things might have changed . Thanks for any help.

 

[PADDO]

I saw it here somewhere ,but now I can't find it now .What is the distance from the center of the wheel to the fender lip on a standard 2000 mod, ahc 100 ? Front and rear.
I changed all the bushings and balljoints in the front , and rear end. 52 cm front , and 52 cm rear ,is what I have now. The ahc will not settle in high , so I suspect I might have cranked the torsjon bar a little to much. I also see folks here run 35-40 psi in the tires. The packard in mine says 32 psi. (275/75/16). but it's 14 years old ,things might have changed . Thanks for any help.

Your front is probably a little high, drop it back to approximately 19.75 inch, rear height is in line with stock expectations. What did you do with your torsion bars and front height? you know AHC vehicle height is adjusted via the height sensors and not torsion bars, right? Tire pressures are all over the place depending on P or LT and all up vehicle weight to name but three variables. Pick a pressure that works for you and your tires and how much load you are carrying. 32 to 35 psi is a reasonable pressure for most stock equivalent tires/vehicle weights.



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[Cruisera100]

Your front is probably a little high, drop it back to approximately 19.75 inch, rear height is in line with stock expectations. What did you do with your torsion bars and front height? you know AHC vehicle height is adjusted via the height sensors and not torsion bars, right? Tire pressures are all over the place depending on P or LT and all up vehicle weight to name but three variables. Pick a pressure that works for you and your tires and how much load you are carrying. 32 to 35 psi is a reasonable pressure for most stock equivalent tires/vehicle weights.



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Thanks Paddo
Well, the ride/handeling has been degrading over some time now , And I have changed just about all the wear-parts , except the steering rack and tie rod ends. I've had the senors off ,and cleaned, and have had the upper and lower controll arms off. So everthing has been off the truck , but the ahc has not been sett up afterwords. Everything has impoved the handling problems, new UCA made a big differance. Yesterday I leveled the car by tighting up the rh side torque bar(1" wheel center to fender up). I se she's kind of high in the front and dosen't have a good "feel" at speed(better before this).
I know the final settup will have to be ajusting the presure, with a little help from the toyota dealer, but I'd like to try and get basic ride height/sensor sett up without their help. (they have done a few 4 wheel allingnments for me , and I know AHC isen't something they work on very often/if at all).
This techstream tool is it available somewhere online?Been trying to find it ?

 

[PADDO]

Attached is the height adjust procedure which will help somewhat. For optimal road manners you should shoot for .75 to 1 inch front to rear rake. I suspect you've cranked your torsion bars to the extent that they are over loaded and the AHC system has been unloaded to the extent that it can't function as designed. For AHC vehicles the torsion bars are cranked to adjust for cross level, that's easy to achieve on flat ground with a tape measure so I'd make sure you are cross level to start and maybe back both TBs off a bit and see if the front height comes down a cm or two. You can try setting the sensors using the battery supply, as per the procedure, I haven't tried that but if its in the procedure its gotta work right? Hit up ebay for techstream and make your life much easier, without it you can't practically* measure your neutral pressure. *a pressure gauge is an option for measuring neutrals but I understand it to be a messy PITA.

 

[Cruisera100]

Attached is the height adjust procedure which will help somewhat. For optimal road manners you should shoot for .75 to 1 inch front to rear rake. I suspect you've cranked your torsion bars to the extent that they are over loaded and the AHC system has been unloaded to the extent that it can't function as designed. For AHC vehicles the torsion bars are cranked to adjust for cross level, that's easy to achieve on flat ground with a tape measure so I'd make sure you are cross level to start and maybe back both TBs off a bit and see if the front height comes down a cm or two. You can try setting the sensors using the battery supply, as per the procedure, I haven't tried that but if its in the procedure its gotta work right? Hit up ebay for techstream and make your life much easier, without it you can't practically* measure your neutral pressure. *a pressure gauge is an option for measuring neutrals but I understand it to be a messy PITA.

Thank You very much PADDO, just what I was looking for. I looked Ebay for the mini vci , do you have one specific in mind ?
( I don't Anything about these devices , but I guess the time has come..) There's a few called V9.10.038 , do think that will do the trick?

 

[Wilsil]

Any mini VCI with Techstream should work.

Regarding tyre pressures, I am running 38 psi in my tyres when on road. The tyres are MT ATZ 33".

 

[Cruisera100]

I got the techstream and installed it, but there dosen't seem to be any connection (data information) between the pc and car. Any tips would help. I guess I'll try re installing it tomorrow