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02-15-2022
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#1 |
 Join Date: Jan 2022
Location: GA
Posts: 6
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ABS Service light?
1990 ZR1 - reading about many possibilities. Where should I start ? Waiting on my factory service manual CD to deliver.
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02-15-2022
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#2 |
 Join Date: Aug 2006
Location: McLean, VA
Posts: 3,727
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Re: ABS Service light?
May be start with pulling code?
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02-15-2022
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#3 |
 Join Date: Apr 2004
Location: ATL. GA.
Posts: 2,168
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Re: ABS Service light?
I worked on a buddy's 93 (had been sitting many years) after I got it running had an ABS code was able to clear it with my scanner never came back. unfortunately I don't remember what code it was.
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Steve 1990 Steel Blue/Black #2355 1990 Red/Red #1473 1991 Quasar /Black #118 Sold 1991 Turquoise/Black #766 Parted Out 1993 Yellow/White #179 Sold 1990 Black/Gray #1361 Headers/4:10s Sold |
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02-16-2022
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#4 |
Join Date: Oct 2004
Location: Folsom CA
Posts: 1,658
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Re: ABS Service light?
You will need a GM Tech1A scan tool to diagnose and after fixing the problem, to reset the code.
If the problem turns out to be a faulty relay in the ABS system, I've dealt with this in the past. The relay is made of pure unobtanium new, you will either have to source a used one off another 1990, or perform a mod like i describe in a post long ago. Do a search for pasts posts by me on ABS relay mod. Crabs
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TomC '90ZR1 #792 Honorary Pirate [B]If it ain't FUN, you're doing something terribly WRONG. [/B] Last edited by tccrab; 02-16-2022 at 02:08 AM. |
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02-23-2022
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#5 | |
  
Join Date: May 2007
Location: Peoria, AZ
Posts: 9,151
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Re: ABS Service light?
Quote:
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GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director  91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V |
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02-24-2022
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#6 |
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Join Date: Apr 2009
Location: ITALY
Posts: 264
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Re: ABS Service light?
Hi guys...
i always have the front reservoir with the oil level lower than the back reservoir....i have no leak...it's normal?? Also if i refill the front one after few miles the level goes down...i dont' know why...the car brakes well... |
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02-25-2022
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#7 | |
Join Date: Dec 2007
Location: Fremont,Ca
Posts: 3,085
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Re: ABS Service light?
Quote:
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02-25-2022
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#8 |
Join Date: Feb 2010
Location: Jacksonville,FL
Posts: 243
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Re: ABS Service light?
Z51JEFF, if it is the wheel speed sensors picking up debris have you ever known of someone who has removed cleaned and replaced them and they still worked ?I would be very interested in how they were removed without damage. Thanks.
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Gary 90-1572 
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05-19-2022
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#9 |
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Join Date: Jan 2022
Location: GA
Posts: 6
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Re: ABS Service light?
Update to my original question / issue. Service guy said the relays are causing the ABS light to come on and someone installed aftermarket Bosch brand before me owning the car. He said only way to make light go off is to have GM relays which cannot be bought new. So what next before I yank the bulb to make this problem go away ? Or will yanking the bulb cause another issue ?
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05-19-2022
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#10 |
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Join Date: Jan 2022
Location: GA
Posts: 6
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Re: ABS Service light?
how much and are you sure they are good ?
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