LS400 Power Steering Idle Up Valve
12-31-15, 01:45 PM
#16
Pole Position
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12-31-15, 07:28 PM
#17
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As has been mentioned on this site before, be careful about getting a 14mm x 1.5 drain plug. I bought one from an auto parts store and it did not thread into the PS pump housing (I would have had to force it). I bought a $1 - 14mm x 1.5 bolt from the hardware store (2-3 inches long) and it threaded perfectly.
Also, I think it was answered in this thread already, but the ACV is generally leaky, especially when it gets old. That means it can leak PS fluid into the vacuum lines and it can also leak PS fluid out of the valve onto the alternator. Tying the vacuum lines together only solves the first leak source. The only way to ensure that the second leak source is stopped long-term is to plug it with a bolt. I would venture to say that all ACV will fail eventually, and it is quite expensive to replace the part with a new one.
Also, I think it was answered in this thread already, but the ACV is generally leaky, especially when it gets old. That means it can leak PS fluid into the vacuum lines and it can also leak PS fluid out of the valve onto the alternator. Tying the vacuum lines together only solves the first leak source. The only way to ensure that the second leak source is stopped long-term is to plug it with a bolt. I would venture to say that all ACV will fail eventually, and it is quite expensive to replace the part with a new one.
12-31-15, 10:05 PM
#18
I don't think you understand what he did. He removed the valve and threw it in the trash. Then he put a solid bolt(I used a spare drain plug that I had laying around) where the valve used to be. He then plugged off the two hoses that used to go to the sensor. My valve was leaking like crazy and was putting oil back into the intakes before I removed the sensor.
01-04-16, 07:32 AM
#19
I don't think you understand what he did. He removed the valve and threw it in the trash. Then he put a solid bolt(I used a spare drain plug that I had laying around) where the valve used to be. He then plugged off the two hoses that used to go to the sensor. My valve was leaking like crazy and was putting oil back into the intakes before I removed the sensor.
https://www.clublexus.com/forums/gs-...ease-help.html
Last edited by rocky5; 01-04-16 at 07:40 AM.
01-01-18, 11:51 PM
#21
Driver School Candidate
Join Date: Dec 2017
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@ors the only way I was able to get it was pulling off the pump assembly, and putting it in a vice. I talked my 17mm wrench with a hammer.to shock loosen the fitting. I also suggest going the Subaru/Honda drain plug route.
03-09-19, 07:25 AM
#22
Racer
As has been mentioned on this site before, be careful about getting a 14mm x 1.5 drain plug. I bought one from an auto parts store and it did not thread into the PS pump housing (I would have had to force it). I bought a $1 - 14mm x 1.5 bolt from the hardware store (2-3 inches long) and it threaded perfectly.
Also, I think it was answered in this thread already, but the ACV is generally leaky, especially when it gets old. That means it can leak PS fluid into the vacuum lines and it can also leak PS fluid out of the valve onto the alternator. Tying the vacuum lines together only solves the first leak source. The only way to ensure that the second leak source is stopped long-term is to plug it with a bolt. I would venture to say that all ACV will fail eventually, and it is quite expensive to replace the part with a new one.
Also, I think it was answered in this thread already, but the ACV is generally leaky, especially when it gets old. That means it can leak PS fluid into the vacuum lines and it can also leak PS fluid out of the valve onto the alternator. Tying the vacuum lines together only solves the first leak source. The only way to ensure that the second leak source is stopped long-term is to plug it with a bolt. I would venture to say that all ACV will fail eventually, and it is quite expensive to replace the part with a new one.
03-09-19, 10:30 AM
#24
Racer
03-09-19, 11:03 AM
#26
Racer
03-09-19, 11:12 AM
#28
Racer
03-10-19, 12:38 PM
#30
I just did a PS pump job recently ask me anything. It took me 5-6 hours with just socket wrench and no power tools. Apparently the PS Pump pulley needs some impact gun so I need to pay someone to get them out.
I wont suggest to delete/plug that value. It has some purpose and apparently the engineers at Lexus spent enough money on it. The valve is like $50 in amazon/ebay Genuine as well and serves easily another 100-200k until something messes up.
I would also suggest you to have PS Pump bolts which mount to the block for this job. As well as the O ring which is required on the top holder which connects the reservoir to PS Pump. You can reuse the top pipe. Also replace the hose with OE only if you're planning to take the PS pump outside. But the value should be accessible from the bottom but be careful in that jungle.
I wont suggest to delete/plug that value. It has some purpose and apparently the engineers at Lexus spent enough money on it. The valve is like $50 in amazon/ebay Genuine as well and serves easily another 100-200k until something messes up.
I would also suggest you to have PS Pump bolts which mount to the block for this job. As well as the O ring which is required on the top holder which connects the reservoir to PS Pump. You can reuse the top pipe. Also replace the hose with OE only if you're planning to take the PS pump outside. But the value should be accessible from the bottom but be careful in that jungle.