Big Hurt

I have purchased 3 sets of front accums for my 00 LK470 from B and B suspension and I am still getting the bounce after about 3 to 4 months of use. I have followed the directions from Keith(owner of B & B) and I get the same result. Are the factory accums that much more reliable and are the after markets just plain faulty? Has anyone experienced anything like this if they have bought aftermarket accums?

It sounds like your ahc pump is having some issues. Keep in mind that your pump motor can still run (so the fault can go undetected) but the pump can fail to move the fluids. Number of reasons cause this issue, inlcuding air creap past the shaft seal into the pump, damages pressure valve and nitrogen depletion (that last one is not likely since you mentioned that your accumulators are fine). The best way to diagnose if this is true is to manually operate the ahc pump and see if fluids are moving. If this is the case, the best solution is replace the pump sub assembly. Don't forget to bleed the system after the replacement :D

-Dave

Thanks Dave,

If the accums are defective will that prevent the pump from working and give me that indication? I have replaced them before with the B & B accums and I have not had much luck I think it's time for me to purchase them from Lexus. And operating the pump manually is that difficult to do and what type of equipment would I need?

My 2000 LX 470's AHC off light is blinking and the truck is in the low position. The manual say it will automatically go into the normal ride height but mine will not. Where do I start to troubleshoot the AHC problem. My accumulators are fine. What else???