hard to steer when gets hot?

Many car users notice this issue.Power steering going out or steering hard to steer.


This is a very common problem .
On most such cases cases this is normally  caused by a faulty intermediate steering shaft .
If there are universal joints and the shaft that begin to seize up a and make it more difficult to steer.
To inspect this ,remove the steering intermediate shaft from the rack assembly and then turn the wheels back and forth. Check that the wheels move smoothly from one lock to the other.



Properly inspect the lower steering shaft and see if it seems to be in good condition or not. When the vehicle is raised on jack stands see if the steering seems fine without any binding. Also try  bleeding the system and see if there is any air getting out of the system.
On some cases this issue was due to faulty power steering pump,.


Usually when this happens, filling the power steering fluid up will cause the power steering to work again. However, that means that there is just a leak. If the fluid gets too low and the power steering pump gets too hot, then the power steering pump could go bad.

You will have to fill up the system and start the engine up while looking for leaks. Turn the steering wheel back and forth until you see or hear power steering fluid leaking. You will need to fix or replace the bad/leaking part.

If this is excessively then its recommended to get the power steering system hydraulics flushed. Not just a fill and drain of the reservoir as there is quite a bit of fluid in the pump steering rack and hoses. Also, they should check the filter in the bottom of the reservoir to insure it is not plugged.



If this does not correct the condition and it is excessively hard to turn cold the steering pump has likely failed. And it needs replacement.

On some cases you notice that power steering pump is replaced,but still the problem persists or starts after few weeks.This is due to non-branded parts.Please use branded and reputable part.Local third grade after market parts are cheap,but they don't give appropriate results and case more problem.

Also use new fluid, don't use old power steering fluid.

Before replacing the power steering pump again,if you still need to confirm the problem.Get the pressure tested for the pump.


If you have checked the fluid level and it is ok, and the belt is good and tight, then you will be facing either a pump failure of an internal steering box failure.

Ideally we would install a pressure gauge to check if the pump is building enough pressure, but if you don't have that ability, then you can remove the pressure hose from the steering box, and with the engine running check that the pump is producing a good fluid flow to the box. This will give you an indication of whether the pump is functioning or not.

If the pump appears to be working, then you will be looking at replacing the steering box to correct this concern.

Also inspect the power steering pressure hose,if its come off it can be the issue.
The diagram shown below will help.


Connect the pressure hose to the spot it came off of, the left side of gear box when standing in front of the truck,





Here is a diagram of either, A/C or not.
Be sure you have the Belt routed the correct way:

Also inspect power steering pulley.If its faulty it has to be replace.To replace power steering pulley it requires special tools. There is a pulley removal tool and intaller tool.

See the diagram shown below:---







This details will help.
Thanks.

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How to Replace Power Rack & Pinion Steering Gear on Toyota Sienna?

The details to replace Power Rack & Pinion Steering Gear on Toyota Sienna are as follows:---

1. Remove or disconnect the following:
   
   
   Negative battery cable

NOTE

Wait at least 90 seconds before working on the vehicle to allow the Supplemental Restraint System (SRS) system to disarm.

Right and left side fender apron seals

Right and left tie rod ends

1. Place matchmarks on the intermediate shaft.
2. Remove or disconnect the following:
   
   
   Pinch bolt and the intermediate shaft out from under the vehicle

   Power steering line clamp

   Pressure and feed lines

   Stabilizer bar, unbolt it but do not remove it

   Heated Oxygen (HO2) sensor

   Both gear assembly set bolts and nuts, by lifting the stabilizer bar

   Gear assembly from the left side of the vehicle

To install:

1. Install or connect the following:
   
   
   Gear assembly to the left side of the vehicle

WARNING

Be careful not to damage the power steering lines.

Tighten the gear assembly set bolts and nuts to 134 ft. lbs. (181 Nm), by lifting the stabilizer bar

HO2 sensor

Stabilizer bar. Tighten the bolt to 14 ft. lbs. (19 Nm) and the nut to 29 ft. lbs. (39 Nm).

Pressure and feed return lines. Tighten them to 18 ft. lbs. (25 Nm).

Line clamps. Tighten the nut to 84 inch lbs. (10 Nm).

Intermediate shaft, by aligning the joint and main shaft matchmarks. Tighten to 26 ft. lbs. (35 Nm).

Tie rod ends

Fender apron seals. Securely tighten the bolts.

Exploded view of the power steering gear and related components-2001-03

1. Remove or disconnect the following:
   
   
   Steering wheel pad

   Steering wheel
2. Position the front wheels facing straight-ahead. Do this with the front of the vehicle on jackstands.
3. Center the spiral cable.
4. Install the steering wheel at the straight-ahead position. Temporarily tighten the wheel set nut. Attach the wiring.
5. Bleed the power steering system.
6. Check the steering wheel center point. Tighten the steering nut to 26 ft. lbs. (35 Nm).
7. Check and/or adjust the front wheel alignment.

Fig. Steering gear and related parts-2004 models

1. Place the wheels in a straight-ahead position.
2. Remove the wheels.
3. Matchmark and remove the intermediate shaft from the gear.
4. Remove the steering column hole cover from the dash panel.
5. Disconnect the tie rod ends.
6. Disconnect the stabilizer bar.
7. Disconnect the pressure and return lines.
8. Remove the 2 gear mounting bolts.
9. Matchmark the intermediate shaft extension and control valve shaft.
10. Remove the intermediate shaft extension bolt and remove the gear.

To install:

1. Place the gear in position. Align the matchmarks and connect the intermediate extension shaft. Torque to 27 ft. lbs. (36 Nm).
2. Install the column cover plate and clamp.
3. Install the gear mounting bolts. Torque to 52 ft. lbs. (70 Nm).
4. Connect the stabilizer bar. Torque to 12 ft. lbs. (17 Nm).
5. Connect the tie rods ends. Torque to 36 ft. lbs. (49 Nm).
6. Connect the intermediate shaft. Torque to 26 ft. lbs. (36 Nm).
7. Check the alignment.

Fig. Exploded view of the power steering gear and related components

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Remove or disconnect the following:
   
   NOTE

   Wait at least 90 seconds before working on the vehicle to allow the Supplemental Restraint System (SRS) system to disarm.
   
   
   
   
   Negative battery cable
   
   
   
   
   Right and left side fender apron seals

   Right and left tie rod ends
3. Place matchmarks on the intermediate shaft.
4. Remove or disconnect the following:
   
   
   Pinch bolt and the intermediate shaft out from under the vehicle

   Power steering line clamp

   Pressure and feed lines

   Stabilizer bar, unbolt it but do not remove it

   Heated Oxygen (HO ₂ ) sensor

   Both gear assembly set bolts and nuts, by lifting the stabilizer bar

   Gear assembly from the left side of the vehicle

To install:

1. Install or connect the following:
   
   WARNING

   Be careful not to damage the power steering lines.
   
   
   
   
   Gear assembly to the left side of the vehicle
   
   
   
   
   Tighten the gear assembly set bolts and nuts to 134 ft. lbs. (181 Nm), by lifting the stabilizer bar

   HO ₂ sensor

   Stabilizer bar. Tighten the bolt to 14 ft. lbs. (19 Nm) and the nut to 29 ft. lbs. (39 Nm).

   Pressure and feed return lines. Tighten them to 18 ft. lbs. (25 Nm).

   Line clamps. Tighten the nut to 84 inch lbs. (10 Nm).

   Intermediate shaft, by aligning the joint and main shaft matchmarks. Tighten to 26 ft. lbs. (35 Nm).

   Tie rod ends

   Fender apron seals. Securely tighten the bolts.
2. Remove or disconnect the following:
   
   
   Steering wheel pad

   Steering wheel
3. Position the front wheels facing straight-ahead. Do this with the front of the vehicle on jackstands.
4. Center the spiral cable.
5. Install the steering wheel at the straight-ahead position. Temporarily tighten the wheel set nut. Attach the wiring.
6. Bleed the power steering system.
7. Check the steering wheel center point. Tighten the steering nut to 26 ft. lbs. (35 Nm).
8. Check and/or adjust the front wheel alignment.

Fig. Exploded view of the power steering gear and related components-2000-03

1. Before servicing the vehicle, refer to the precautions section.
2. Remove or disconnect the following:
   
   NOTE

   Wait at least 90 seconds before working on the vehicle to allow the Supplemental Restraint System (SRS) system to disarm.
   
   
   
   
   Negative battery cable
   
   
   
   
   Right and left side fender apron seals

   Right and left tie rod ends
3. Place matchmarks on the intermediate shaft.
4. Remove or disconnect the following:
   
   
   Pinch bolt and the intermediate shaft out from under the vehicle

   Power steering line clamp

   Pressure and feed lines

   Stabilizer bar, unbolt it but do not remove it

   Heated Oxygen (HO ₂ ) sensor

   Both gear assembly set bolts and nuts, by lifting the stabilizer bar

   Gear assembly from the left side of the vehicle

To install:

1. Install or connect the following:
   
   WARNING

   Be careful not to damage the power steering lines.
   
   
   
   
   Gear assembly to the left side of the vehicle
   
   
   
   
   Tighten the gear assembly set bolts and nuts to 134 ft. lbs. (181 Nm), by lifting the stabilizer bar

   HO ₂ sensor

   Stabilizer bar. Tighten the bolt to 14 ft. lbs. (19 Nm) and the nut to 29 ft. lbs. (39 Nm).

   Pressure and feed return lines. Tighten them to 18 ft. lbs. (25 Nm).

   Line clamps. Tighten the nut to 84 inch lbs. (10 Nm).

   Intermediate shaft, by aligning the joint and main shaft matchmarks. Tighten to 26 ft. lbs. (35 Nm).

   Tie rod ends

   Fender apron seals. Securely tighten the bolts.
2. Remove or disconnect the following:
   
   
   Steering wheel pad

   Steering wheel
3. Position the front wheels facing straight-ahead. Do this with the front of the vehicle on jackstands.
4. Center the spiral cable.
5. Install the steering wheel at the straight-ahead position. Temporarily tighten the wheel set nut. Attach the wiring.
6. Bleed the power steering system.
7. Check the steering wheel center point. Tighten the steering nut to 26 ft. lbs. (35 Nm).
8. Check and/or adjust the front wheel alignment.

Fig. Steering gear and related parts-2004-06 models

1. Place the wheels in a straight-ahead position.
2. Remove the wheels.
3. Matchmark and remove the intermediate shaft from the gear.
4. Remove the steering column hole cover from the dash panel.
5. Disconnect the tie rod ends.
6. Disconnect the stabilizer bar.
7. Disconnect the pressure and return lines.
8. Remove the 2 gear mounting bolts.
9. Matchmark the intermediate shaft extension and control valve shaft.
10. Remove the intermediate shaft extension bolt and remove the gear.

To install:

1. Place the gear in position. Align the matchmarks and connect the intermediate extension shaft. Torque to 27 ft. lbs. (36 Nm).
2. Install the column cover plate and clamp.
3. Install the gear mounting bolts. Torque to 52 ft. lbs. (70 Nm).
4. Connect the stabilizer bar. Torque to 12 ft. lbs. (17 Nm).
5. Connect the tie rods ends. Torque to 36 ft. lbs. (49 Nm).
6. Connect the intermediate shaft. Torque to 26 ft. lbs. (36 Nm).
7. Check the alignment.

These details will help.

Thanks.

FOR MORE HELP GO TO: ---

Car repair guide?

http://technoanswers.blogspot.in/2012/03/car-repair-guide.html