Did I just pull my IACV, or something else?
03-01-14, 02:11 PM
#1
Did I just pull my IACV, or something else?
All,
I have been working on my '95 400 today, going through the steps to eliminate a hesitation under light acceleration.
I came to the IACV and followed the steps outline here:
In order to follow SC400Slide's DIY tutorial, here: https://www.clublexus.com/forums/per...acv-sc400.html
It wasn't until I got the part off that I noticed how unlike mine was from the one in Slide's write up. In fact, it looks like I have an identical part to his, but it's sitting further back on the plenum, on the driver's side. See my pics below.
Now I'm stumped. The part I pulled does not have the screws to disassemble it. The other part I'll point out does. Thoughts?
Part I pulled:
Where it came from:
Other part that looks like Slide's IACV:
I will be searching as well, but I need my car back on the road by tomorrow. Hoping for the fastest responses. Thanks.
I have been working on my '95 400 today, going through the steps to eliminate a hesitation under light acceleration.
I came to the IACV and followed the steps outline here:
Another possible culprit of hesitation is the idle air control valve. Located right on the front of the plenum you have a few options for checking it.
Click the image to open in full size.
You will have to carefully remove the plug wire tray to get to this.
Undo the 2 bolts holding it to the plenum. Disconnect the cooling lines. Disconnect the connector and pull it out.
Click the image to open in full size.
Do your resistance checks and if you feel real adventurous, connect your battery leads to it and stroke the valve to verify operation.
You can go one step further and remove the 3 phillips screws holding the stepper motor assembly to the mounting body. Now the full valve is exposed along with the motor armature. Spin it in and out a few times to verify it moves smooth. Clean it up, lube it up and reinstall. OF course replace if any readings are out of spec.
Click the image to open in full size.
You will have to carefully remove the plug wire tray to get to this.
Undo the 2 bolts holding it to the plenum. Disconnect the cooling lines. Disconnect the connector and pull it out.
Click the image to open in full size.
Do your resistance checks and if you feel real adventurous, connect your battery leads to it and stroke the valve to verify operation.
You can go one step further and remove the 3 phillips screws holding the stepper motor assembly to the mounting body. Now the full valve is exposed along with the motor armature. Spin it in and out a few times to verify it moves smooth. Clean it up, lube it up and reinstall. OF course replace if any readings are out of spec.
It wasn't until I got the part off that I noticed how unlike mine was from the one in Slide's write up. In fact, it looks like I have an identical part to his, but it's sitting further back on the plenum, on the driver's side. See my pics below.
Now I'm stumped. The part I pulled does not have the screws to disassemble it. The other part I'll point out does. Thoughts?
Part I pulled:
Where it came from:
Other part that looks like Slide's IACV:
I will be searching as well, but I need my car back on the road by tomorrow. Hoping for the fastest responses. Thanks.
Last edited by MongooseGA; 03-01-14 at 02:14 PM.
03-01-14, 05:26 PM
#3
It appears there were different part numbers for different years. Mine is PN#22270-50020.
Older ones like in the DIY are PN#22270-50010.
Couldn't guess what mine is different. Could be because the car has traction control while others didn't? Could just be the year?
Either way, has anyone successfully opened one like mine to clean? I'm a bit reluctant to put a flat edge under the plastic cap and start prying. Especially on a part that I don't know yet is bad.
Anyone able to tell if the PN# ending in 50010 would be compatible with my car? With the exception of shape of the pin I can see inside of mine, they're identical.
Older ones like in the DIY are PN#22270-50010.
Couldn't guess what mine is different. Could be because the car has traction control while others didn't? Could just be the year?
Either way, has anyone successfully opened one like mine to clean? I'm a bit reluctant to put a flat edge under the plastic cap and start prying. Especially on a part that I don't know yet is bad.
Anyone able to tell if the PN# ending in 50010 would be compatible with my car? With the exception of shape of the pin I can see inside of mine, they're identical.
Last edited by MongooseGA; 03-01-14 at 06:42 PM.
03-01-14, 07:38 PM
#6
No worries. The write-up was definitely great. Just unfortunate it doesn't relate to mine right now.
I'm meeting with a guy locally tomorrow to pick up a TPS and new IACV from a '97 to test out. He did seem to think that any model #IACV was interchangeable throughout the OBD1 cars.
I'm meeting with a guy locally tomorrow to pick up a TPS and new IACV from a '97 to test out. He did seem to think that any model #IACV was interchangeable throughout the OBD1 cars.
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