Battery keeps dying
11-29-12, 09:03 AM
#16
Lexus Champion
it would be nice if we could segregate the generations of the cars better and where their PS leaks really are
it seems than in the LS400, the most common place that the PS leaks from has been moving around a bit, depending on the generation of LS400, perhaps Toyota was on the trail of eliminating it.
so when people report how they finally found the PS leaking culprit, they should specify whether their LS400 is a 90-94 or a 95-97 or a 98-2000
it seems than in the LS400, the most common place that the PS leaks from has been moving around a bit, depending on the generation of LS400, perhaps Toyota was on the trail of eliminating it.
so when people report how they finally found the PS leaking culprit, they should specify whether their LS400 is a 90-94 or a 95-97 or a 98-2000
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joetee (11-11-22)
11-29-12, 11:43 AM
#17
trukn1
Question for you ..
I was looking through the PS bible and wondering do you think if I replace all the hoses leading into the PS pump and the PS pump itself would it be fine. Looking online the part seems to cost around 170 with a core charge trade in. I would rather spend more money now then using more time later.
I just want a piece of mind that everything is done in that department so I can move on to the timing belt change. I don't want to revisit this a year or two later
Question for you ..
I was looking through the PS bible and wondering do you think if I replace all the hoses leading into the PS pump and the PS pump itself would it be fine. Looking online the part seems to cost around 170 with a core charge trade in. I would rather spend more money now then using more time later.
I just want a piece of mind that everything is done in that department so I can move on to the timing belt change. I don't want to revisit this a year or two later
It's usually the rubber o rings that go. Smart to make something that protects the alternator as well.
10-20-18, 11:44 PM
#18
Moderator
A fuse has small two metal terminals at top end and all I need to do is to touch the probes to them. A fuse has some small resistance and this causes a small voltage drop. Every load has at least one fuse and I can find the current consuming equipment easily reading the voltage drop. Where any voltage drop exists, there goes a current, you know.
As I check fuses used for Toyota cars, a 10A fuse has a resistance of about 10 mOhm. If a 1A of current goes through this, there will be a voltage drop of 10mV. In case of 30A, it is around 3-4 mOhm and the voltage drop is smaller but still you can read the voltage drop. My multimeter Fluke8060A can read down to 0.01mV and 10mV can be detected easily. I have recommended shop owners to use this method and now they can find the exact line and the unit very quickly.
As I check fuses used for Toyota cars, a 10A fuse has a resistance of about 10 mOhm. If a 1A of current goes through this, there will be a voltage drop of 10mV. In case of 30A, it is around 3-4 mOhm and the voltage drop is smaller but still you can read the voltage drop. My multimeter Fluke8060A can read down to 0.01mV and 10mV can be detected easily. I have recommended shop owners to use this method and now they can find the exact line and the unit very quickly.
To remove many fuses is not very easy and it needs time. You can save a lot of time if you have a multimeter which can read down to 0.1mV order. Because you can check the current draw without removing fuses. For your better understanding, I show you the actual way to check today.
As you see photos below, you can see how my suggesting method works. The left photo shows the current going to a bulb 12V 5W attached to the MPX-B fuse line. The current actually measured is 365.4mA and the voltage drop at the fuse 10A shows 3.26mV (right photo). You even can calculate the resistance of the fuse.
3.26mV ÷ 365.4 ≒ 9mΩ.
My Celsior's 10A fuse for the MPX-B has a resistance 9mΩ and this causes a voltage drop 3.26mV when there goes 365.4mA.
Since all fuses have some small resistance and there always exists voltage drop. A good multimeter can save your time just reading the voltage drop.
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