steering mods - Toyota Yaris Forums

yaris9876 · 03-09-2020, 03:19 PM

This is about a 99 sienna Van but its a Toyota and I have a Yaris....640K miles truly.Original all including clutch. But it shudders a little bit..
If I ask about mods on most sites the establishment jack asses always get scared and say dont do mods...stick to stock...they make me sick.Yaris people tend to have guts or they wouldnt have bought a tiny Yaris anyway.
The power steering H pump on the Sienna needs replace. I really would like to change it back to a simpler set up. Pull out the hydraulic ram and just go bck to rack and pinion
with a old style steering box. The hydraulic set up on Siennas is known for failing.
I dont know if those steering boxes have power or not. I know they have oil of some kind.
Has anyone here done any mods on their steering systems???? Can you get a 12v powered steering box that would help turn an offset knuckle like you find on Rack and Pinion.??? I dont know if we have many mechanics on the forum...I hope there are some..

Brighton · 03-10-2020, 10:03 AM

The toyota electric steering systems are oil-less I believe and Toyota likes to keep things modular so you could probably find a complete hydraulic system from an older SUV/Truck in the junkyard. I'd stick with pulling it from a 4Runner, Pickup or Previa? You're in uncharted waters but make sure to get a system rated for about the same weight as a Sienna.

remcafee · 03-10-2020, 04:35 PM

So for a 99 sienna you have 2 options, either replace the rack and pinion assembly with a new one (not cheap) or you can bypass power steering all together by looping around the rack lines and get a drive belt with no power steering, only thing is it would be hard to turn standing still

yaris9876 · 03-13-2020, 08:03 PM

the stock system is hyd ram..not RP....what do you mean by drive belt?
I see on the net that there are elctric assist steering boxes that will do rack and pinion..and that is a kind of power steering.

03-09-2020, 03:19 PM	#1
yaris9876 Drives: yaris hatch 07 640K original m Join Date: Mar 2007 Location: usa Posts: 285	steering mods This is about a 99 sienna Van but its a Toyota and I have a Yaris....640K miles truly.Original all including clutch. But it shudders a little bit.. If I ask about mods on most sites the establishment jack asses always get scared and say dont do mods...stick to stock...they make me sick.Yaris people tend to have guts or they wouldnt have bought a tiny Yaris anyway. The power steering H pump on the Sienna needs replace. I really would like to change it back to a simpler set up. Pull out the hydraulic ram and just go bck to rack and pinion with a old style steering box. The hydraulic set up on Siennas is known for failing. I dont know if those steering boxes have power or not. I know they have oil of some kind. Has anyone here done any mods on their steering systems???? Can you get a 12v powered steering box that would help turn an offset knuckle like you find on Rack and Pinion.??? I dont know if we have many mechanics on the forum...I hope there are some..

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
No power steering on '08 Yaris after airbag recall done	madradjessica	DIY / Maintenance / Service	14	12-18-2018 08:14 PM
DIY aftermarket steering wheel install with horn and airbag delete	tmontague	Performance Modifications	19	11-30-2018 12:19 PM
The Yaris Steering Wheel	wornways	General Yaris / Vitz Discussion	12	10-09-2012 01:41 PM
Steering wander, adjusting EPS assist	Snubba	Wheels, Tires and Suspension Forum sponsored by The Tire Rack	6	05-22-2012 05:39 PM
How much would you pay for a warranty supported steering wheel extension? (3d try)	wornways	General Yaris / Vitz Discussion	36	09-16-2009 10:16 AM

03-10-2020, 10:03 AM	#2
Brighton Knower of little Drives: None Join Date: Jul 2019 Location: NO Posts: 87	The toyota electric steering systems are oil-less I believe and Toyota likes to keep things modular so you could probably find a complete hydraulic system from an older SUV/Truck in the junkyard. I'd stick with pulling it from a 4Runner, Pickup or Previa? You're in uncharted waters but make sure to get a system rated for about the same weight as a Sienna.

03-10-2020, 04:35 PM	#3
remcafee Drives: 2007 Toyota Yaris 3 door Join Date: Sep 2018 Location: Arizona Posts: 403	So for a 99 sienna you have 2 options, either replace the rack and pinion assembly with a new one (not cheap) or you can bypass power steering all together by looping around the rack lines and get a drive belt with no power steering, only thing is it would be hard to turn standing still

03-13-2020, 08:03 PM	#4
yaris9876 Drives: yaris hatch 07 640K original m Join Date: Mar 2007 Location: usa Posts: 285	the stock system is hyd ram..not RP....what do you mean by drive belt? I see on the net that there are elctric assist steering boxes that will do rack and pinion..and that is a kind of power steering.