If you are unsure of the history of your previa, I would suggest
doing
this as part of the maint task list. If you seen my earlier post
with previadiaries and TheMan's images, their IACV needed the
cleaning. I feel the flake filter is a MUST DO. This is a problem for
supercharged
previas. Going down to the IAC valve and cleaning it out is just good
maint. and this can be were problems arise.
The parts I ordered:
For under the hood:
- Fram G15 inline filter - this for the flakes going into the ventilation tube.
- 2 small hose clamps for the filter.
- Throttle body gasket - 22271-76020
- IAC valve rubber gasket - 22215-76010 - gasket between the IACV and Throttle body
- IAC valve screws (set of 4) - 21821-25180 - holds the IACV to the throttle body
Removed air duct and some of the big hoses that are in the way.
After detaching hosing to the Throttle body and removal (4 bolts, 2 tiny hoses, 3 big hoses, 2 sensors), I immediately cleaned out the ventilation pipe. There was some flakes and carbon build up. I then cut the hose and installed the inline filter.
I cleaned the throttle body and IAC valve a bit and checked function.
The long ventilation tube.
Undo the hose at the T junction
I cleaned out the T junction to the best of my ability
Next was undoing the small hoses and sensors attached to the throttle body.
My IACV was clean. Even though my motor was rebuilt, this was not part of it and I was glad to see it was clean and now I know. 4 screws held this in place and one of the screws was seized.
While I used a philips head, it was mentioned to use a JIS screwdriver by TheMan.
If you are unsure of the history of your previa, I would suggest doing this as part of the maint task list. If you see in my earlier posts with previadiaries and TheMan's images, their IACV needed the cleaning. I feel the flake filter is a must. This is a problem for supercharged previas. Going down to the IAC valve and cleaning it out is just good maint. and as you seen, this can be were problems arise.
The hose going to the ventilation tube (with the T junction), I cut it to be smaller and attached the G15 filter with the arrow pointing towards the T junction.
The parts I ordered:
For under the hood:
- Fram G15 inline filter - this for the flakes going into the ventilation tube.
- 2 small hose clamps for the filter.
- Throttle body gasket - 22271-76020
- IAC valve rubber gasket - 22215-76010 - gasket between the IACV and Throttle body
- IAC valve screws (set of 4) - 21821-25180 - holds the IACV to the throttle body
Removed air duct and some of the big hoses that are in the way.
After detaching hosing to the Throttle body and removal (4 bolts, 2 tiny hoses, 3 big hoses, 2 sensors), I immediately cleaned out the ventilation pipe. There was some flakes and carbon build up. I then cut the hose and installed the inline filter.
I cleaned the throttle body and IAC valve a bit and checked function.
The long ventilation tube.
Undo the hose at the T junction
I cleaned out the T junction to the best of my ability
Next was undoing the small hoses and sensors attached to the throttle body.
My IACV was clean. Even though my motor was rebuilt, this was not part of it and I was glad to see it was clean and now I know. 4 screws held this in place and one of the screws was seized.
While I used a philips head, it was mentioned to use a JIS screwdriver by TheMan.
If you are unsure of the history of your previa, I would suggest doing this as part of the maint task list. If you see in my earlier posts with previadiaries and TheMan's images, their IACV needed the cleaning. I feel the flake filter is a must. This is a problem for supercharged previas. Going down to the IAC valve and cleaning it out is just good maint. and as you seen, this can be were problems arise.
The hose going to the ventilation tube (with the T junction), I cut it to be smaller and attached the G15 filter with the arrow pointing towards the T junction.
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