Help! (Please) AHC issue - rear end bouncing and way too low

[Undefined]

I had this happen last weekend, then it self recovered. Now it has happened again.

Model - '05 LX470
Symptoms - rear end won't go up, even in AHC high mode. It is lower than I've ever seen it before. Driving over a relatively smooth road feels like I'm on a pogo stick.

Height sensor? AHC sphere/globe? What do I need to do to get this sorted out?

-Or-

Anyone know a shop in or near Nashville that can rip the AHC out and put in a traditional suspension?

 

[camino70]

Anyone know a shop in or near Nashville that can rip the AHC out and put in a traditional suspension?

Slow down

Sounds like a rear height sensor.

 

[Undefined]

I've done a little reading on the height sensor - it sounds like some people have managed to replace the springs inside it (which rust) and others have replaced the sensor itself.

I have not found any reference to the specific replacement springs people have successfully used....

 

[camino70]

This thread mentions:

Summary:
89407-60010 Rear Sensor ASSEMBLY including linkage $250-$300
Dorman 924755 SENSOR ONLY (as pictured in images in posts above) $55
-leej

AHC, back really high

jonathn also mentions cleaning and slightly bending the fingers, probably worth a shot.

Ramathorn15 replaced his stockers with King springs:
King Springs AHC KTRS-79

 

[Bomar]

Or drive it to Atlanta to ACC.

 

[Undefined]

This thread mentions:

Summary:
89407-60010 Rear Sensor ASSEMBLY including linkage $250-$300
Dorman 924755 SENSOR ONLY (as pictured in images in posts above) $55
-leej

AHC, back really high

jonathn also mentions cleaning and slightly bending the fingers, probably worth a shot.

Ramathorn15 replaced his stockers with King springs:
King Springs AHC KTRS-79

I just ordered the Dorman sensor (Amazon same day delivery for the win!).

Thank you very much! If this works, you just saved me several hundred dollars and days of waiting for parts.

 

[PADDO]

When you swap potentiometers I'd recommend taking the complete assembly off the vehicle and doing the job on a bench just to ensure the height feedback lever is correctly seated on the new pot's shaft collar. The lever's mounting face fits one way onto a corresponding raised profile on the collar and if it's not seated properly the stub shaft can turn as you tighten down the locking nut. If it turns past its stops (it is constrained to about 180 degrees rotation) then the potentiometer's wiper is no longer aligned to the lever position and it will give dodgy feedback.

 

[2003lx470]

This is for the front. Back should be the same.

 

[Stricmic000]

So bad height sensor cause it to feel like a pogo stick? Just checking before i order stuff

This is for the front. Back should be the same.

 

[Stricmic000]

Thanks!

 

[Stricmic000]

Height sensor did not fix my issue, still feels like a pogo stick on the back but works fine in h mode