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1986 Porsche 928 - ABS type hub carrier & sensor issues

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Old 04-07-2020, 05:43 PM
  #31  
icsamerica
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Originally Posted by JayPoorJay
Got to swapping out the rear RH carrier, Axle and ABS sensor today. Took it apart, buttoned it up with new old parts, and BAM! ABS warning glowing just like it was! 😝

Shouldah knowd it!
Nothing can be as "simple"...

The chase continues,,, haha, or just begins.
Ahhhhh,,, love me some ABS issues - PITA
all my cars but one!
Try to see what the ABS computer sees. So start by checking for wheel speed sensor resistance across the pins at the ABS module. Should be something like 9 to 12 ohms.
If they all check out good, move on to grounds, 12V sources at the hydrolic unit and Module, brake pedal switch, hydrolic unit relays. If they they all check out then it's the control unit and I have one for an 85...somewhere.

Pins 24,26 for rear right
Pins 9,8 for Rear Left
Pins 21,23 for Front Right
Pins 4,6 for Front Left

http://www.ligeti.com/928/Porsche%20...20-%201985.pdf






Last edited by icsamerica; 04-07-2020 at 08:49 PM.
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Old 04-07-2020, 07:37 PM
  #32  
JayPoorJay
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Very good! I will.
Thank you, Brother!

Might take me a few days, multi projects and Corona time, but I'll get on it... Could just be a bunk sensor. Hard to find I hear.

Thanks for the great and precise info!
Old 04-07-2020, 08:39 PM
  #33  
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Late to the party but we have the 84 to 86 front ABS sensors in stock - they were only used up until 85 ROW and 86 USA (not 86.5).
We are still working on the rears and hope to have something shortly.
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Old 04-07-2020, 08:56 PM
  #34  
JayPoorJay
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Originally Posted by ROG100
Late to the party but we have the 84 to 86 front ABS sensors in stock - they were only used up until 85 ROW and 86 USA (not 86.5).
We are still working on the rears and hope to have something shortly.
HellO. Thank you, Roger.
I think I am subscribed to that (a) thread about the production of abs sensors. Been working on a Portfolio Edition XKR that was in a flood (in Texas I believe) and it's winning... Kicking my butt... But if it doesn't turn out to be something that breaks the bank and surpass my abilities (which ain't so hard) I will be doing what I can to get that ABS warning off.

Yes, thank you.
Old 04-08-2020, 04:29 PM
  #35  
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Default Got It - Finally!

Got it!!!

Crusty big OL positive front LH corner under the bonnet, and stuff. Of course replacing all the mis-matched components on RH rear was it IT,,, but after cleaning things up at the hydro unit - warning light free!!!

You all are the best - now - will I ever have cruise control, lol?
A fridge-ed AC system?

I'm asking toooooo much! Hahaha
Deep bow and thanks.
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