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ABS problem after LS400 bbk install

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Old 06-01-11, 11:32 AM   #1
xspsi6
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Default ABS problem after LS400 bbk install

So it seems as if my ABS motor is engaging when I hit the brakes as the car slows down to a stop and this only happens at a certain speed it seems like like around 20- 5mph so I am at a loss as everything is new and I have checked everything over time and time again

Suggestions??
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Old 06-01-11, 11:45 AM   #2
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Dont think I have ever heard of anyone experiencing any problems like this but i'll keep my eyes and ears open for you and if I come across anything i'll let you know.
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Old 06-01-11, 01:00 PM   #3
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Yup it's a very odd problem to have and nothing is out of the ordinary including the ABS sensors on the hub.
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Old 06-03-11, 04:49 AM   #4
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i did the ls400 conversion on my car never had problems, u sure u tightened the brake lines?
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Old 06-03-11, 10:48 AM   #5
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check brake fluid
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Old 06-03-11, 11:24 AM   #6
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My ABS just flat out doesn't work.
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Old 06-03-11, 10:32 PM   #7
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Quote:
Originally Posted by 1FastSc View Post
check brake fluid
Yup brake fluid is still there The problem is way beyond fluid and bolts that are not tight...
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Old 06-04-11, 06:04 AM   #8
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sometimes air pockets get into the abs solenoid (when you open lines to change calipers) sometimes bad enough to engage abs prematurely.. try driving and stomping on the brakes ( in a safe area and not very high rate of speed) to fully engage abs to induce wheel lockup .. do it a few times then go back home and bleed system starting at rear passenger wheel to rear drivers the front pass then driver front but do it when engine running for that causes the abs unit to cycle
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Old 06-04-11, 10:33 AM   #9
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Quote:
Originally Posted by lexforlife View Post
sometimes air pockets get into the abs solenoid (when you open lines to change calipers) sometimes bad enough to engage abs prematurely.. try driving and stomping on the brakes ( in a safe area and not very high rate of speed) to fully engage abs to induce wheel lockup .. do it a few times then go back home and bleed system starting at rear passenger wheel to rear drivers the front pass then driver front but do it when engine running for that causes the abs unit to cycle
I did sort of do that as I went in some wet grass by my house to do this but I will try it a couple more times as soon as I order some more ATE super blue fluid, Thanks!
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Old 07-20-11, 03:51 PM   #10
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i have this problem now!!!1...did you fix your issue?
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Old 07-20-11, 04:02 PM   #11
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Nope not yet and I have bled 2 quarts of fluid through it but I am going to pull it on the hoist next month when I do my t-belt and find the root cause of this problem.
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Old 07-20-11, 07:01 PM   #12
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Please keep me updated on the issue. I was told that it could be the brake modulator.
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Old 07-20-11, 07:22 PM   #13
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I should state that Lexforlife was on to something as when I flushed it it got way better however flushing 25.00 per quart of ate super blue fluid gets costly so I almost think if I flush it 1 more time it will get better yet so try that and report back.
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Old 07-25-11, 05:38 AM   #14
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will do. flushing as in bleeding the system or flushing as in drain it and re-fill?
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Old 07-25-11, 08:03 AM   #15
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Quote:
Originally Posted by FUZION View Post
will do. flushing as in bleeding the system or flushing as in drain it and re-fill?
Bleeding.
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Old 07-25-11, 08:03 AM
 
 
 
 
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1994, 400, abs, bbk, brakes, check, lexus, ls, ls400, module, rear, removal, replace, sc, sensor, solenoid

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