
Originally Posted by
Woof
For simple mechanical rattling from normal wear and tear, there is actually a very simple fix. You just need to tighten the rack guide by 1/8 turn (40 degrees to be specific) and your steering is good as new. Don't listen to the P80K replacement offered by the casa or the P5k "overhaul with engineering plastic bushing" BS offered by roadside hacks.
There is a rack guide adjustment service and a special tool (PN: 07AAA-TL2A100) from Honda that makes this in-situ service possible and quick - less than an hour if the mechanic knows what he's doing. There is no need to bring down the subframe or align wheels after. Only the bottom cover needs to be partially bent down to perform the procedure.
This "rack guide" (by Honda's lingo), "yoke", "preload", "slipper", "half-moon" (in local lingo) adjustment is present in all rack and pinion steering systems - hydraulic or EPS. So this applies to non-honda vehicles as well.
If your unit is relatively new, by all means claim the entire EPS assembly under warranty. If not, this simple rack guide adjustment should buy you some time before a replacement. You can probably get away with one or two adjustments before the clearances become too big to be mitigated by the adjustment. Greasing the rack guide port and the rack itself also helps. Use tacky (NLGI grade 1 or 2) lithium or calcium-based grease as normal mineral grease would degrade the rubber o-rings and plastic bushings/gears in the EPS unit.