left front wheel-erratic sensor readings help please - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 09-15-2011, 08:32 PM   #1
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Default left front wheel-erratic sensor readings help please

so about a year ago my car started lighting up the abs/trac lights. i figured it was no big deal but took it to midas where one of my friends works and he threw the computer at it. he said its saying the left front wheel is putting out erratic signals and its causing the abs and trac to turn off.

on a side note, if its below about 65 degrees they wont kick on (lights) but my trac loves to kick on and limit my power when im trying to, oh i dunno MERGE ONTO A FREEWAY and the abs absolutely loves to scare the **** out of me when im pulling up to stopsign and make me roll halfway through them.

but i replaced that bearing/speed sensor in march, thinking that would fix it but it didnt. i traced the wires as far as i could see/feel them and they looked fine... do you guys have any ideas? ive got my multimeter now if you know any voltages/resistance im supposed to check for.

id just really like to get this fixed before winter. because, to stay on my moms insurance ive gotta keep it registered to her in lake county. one of only 2 counties in indiana which require my car go through a saftey/emissions test.(by 12/9/11) and if my car came stock with a saftey feature it wont pass unless its working.....

thanks alot for any/all suggestions.
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Old 09-15-2011, 09:43 PM   #2
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Here is a test. https://www.gmforum.com/trouble-shooting-test-procedures-141/wss-wheel-spin-sensor-test-296556/ But seeing you have replaced that sensor and the problem is still there, I would suspect the wires. I've seen odd ABS signals come from water in the plugs.
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Old 09-16-2011, 09:15 AM   #3
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Can you get your buddy to scan it again?
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Old 09-16-2011, 09:20 AM   #4
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Yeah, but hes 10 hrs away in hobart... I might br abke to get in hood with the midas here. I've gotta get ny oil done in the next 500 miles or so...

Sorry for the typos. I'm on my phone. Stupid touchscreens lol.
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Old 09-16-2011, 09:28 AM   #5
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Most transmission shops can scan it as well.
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Old 09-17-2011, 09:31 AM   #6
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clean the connectors like dan said and did you clean out the hole it sits in? its got to be clean and seated good, they are very touchy
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Old 09-24-2011, 12:58 AM   #7
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I've seen wheel bearings throw abs codes fresh out of the box. I've also had to replace 2 front ones on my PA under warranty for that reason as well.
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Old 09-24-2011, 09:03 AM   #8
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Quote:
Originally Posted by eltatertoto View Post
so about a year ago my car started lighting up the abs/trac lights. i figured it was no big deal but took it to midas where one of my friends works and he threw the computer at it. he said its saying the left front wheel is putting out erratic signals and its causing the abs and trac to turn off.

on a side note, if its below about 65 degrees they wont kick on (lights) but my trac loves to kick on and limit my power when im trying to, oh i dunno MERGE ONTO A FREEWAY and the abs absolutely loves to scare the **** out of me when im pulling up to stopsign and make me roll halfway through them.

but i replaced that bearing/speed sensor in march, thinking that would fix it but it didnt. i traced the wires as far as i could see/feel them and they looked fine... do you guys have any ideas? ive got my multimeter now if you know any voltages/resistance im supposed to check for.

id just really like to get this fixed before winter. because, to stay on my moms insurance ive gotta keep it registered to her in lake county. one of only 2 counties in indiana which require my car go through a saftey/emissions test.(by 12/9/11) and if my car came stock with a saftey feature it wont pass unless its working.....

thanks alot for any/all suggestions.
I suggest try getting it serviced by a dealer. If you have any questions about your car, you can call GM Buick Division @ 1-800-521-7300. I tried calling before and they were able to help me out. I paid for the repair but I was glad it got fixed and everything'* fine now.
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Old 09-28-2011, 08:40 PM   #9
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Moved to Park Ave Mechanical and Maintenance. Please stop using General Chat for mechanical problems in which you have a Section.
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Old 09-28-2011, 08:47 PM   #10
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Quote:
Originally Posted by GXP Venom View Post
Moved to Park Ave Mechanical and Maintenance. Please stop using General Chat for mechanical problems in which you have a Section.
in this particular instance i figured the general section was just as relevant because the c bodies all had the same hubs, and the park ave forum doesnt pop up in the "latest threads" bar, so there is alot less traffic.

point taken though. sorry for disorganizing the forum
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