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Hit a bump-3 amigos

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Old Oct 4, 2018 | 03:46 PM
  #1  
H Hill's Avatar
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Rock Crawling
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From: Indianapolis, IN
Default Hit a bump-3 amigos

2000 Discovery II, 257K, fixed the 3 Amigos a while back with the forum sticky post about the wire around and has worked great for a number of years.
Now if I hit a fairly good sized bump or pot hole, 3 Amigos come on and only disappear if I shut off the truck and restart. Another bump and the same thing.

where to look. ABS sensor, broken wire, ?

Any thoughts as to where to start?

As always thanks in advance to all the folks on the forum for any assistance.

 
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Old Oct 4, 2018 | 04:11 PM
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I would start by checking for loose speed sensors, and clean out old break dust.
 

Last edited by R0VERGUY; Oct 4, 2018 at 04:16 PM.
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Old Oct 4, 2018 | 04:15 PM
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If you have the older style, check the connectors they are in each wheel well - one could be loose
 
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Old Oct 4, 2018 | 04:22 PM
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Yep as old as these trucks are getting the OEM style sensors with connections at each sensor are starting to just crumble with age. I use 2 wire trailer connectors in place of the OEM setup.
 
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Old Oct 4, 2018 | 08:46 PM
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Originally Posted by Best4x4
Yep as old as these trucks are getting the OEM style sensors with connections at each sensor are starting to just crumble with age. I use 2 wire trailer connectors in place of the OEM setup.
Great idea here.
 
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Old Oct 4, 2018 | 09:09 PM
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Winching
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Also, check the “option B” ground connection. Most use the screw for the AC bracket and it can corrode over time.
 
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Old Oct 5, 2018 | 09:54 AM
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Rock Crawling
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OK, additional info.
Went off again last night, did the key off/key on routine, and the 3 amigos would not clear. I own the "ABS Amigo" from RSW Solutions, and used it. It cleared for but a moment, the chime went off, and the 3 lights appeared again. I plan to clean all the connectors, and check the ground on the "option B" connection.

As well as all the cleaning sensor suggestions.

I'll let you know what I find. Thanks to all!!
 
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Old Oct 5, 2018 | 10:20 AM
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Did the amigo give you a fault code? It sounds like either a shuttle valve switch, bad ground, or a bad sensor connection.

​​​​​​
 
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Old Oct 5, 2018 | 01:09 PM
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A real code reader would help. At least in my case it told me what wheel
 
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Old Oct 5, 2018 | 04:53 PM
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Rock Crawling
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Originally Posted by Ben Matheson
A real code reader would help. At least in my case it told me what wheel
What code reader would you suggest?
 
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