jameswoodlee

iTrader: (5)

my asr abs inop brake light comes on all the time. sometimes its on when i start my car up others it takes about 5 min then it comes on. n e ideas??
thanks

LS6427

iTrader: (2)

You will get those lights if you changed the size of your tires. Even if you got the same diameter tires for that sized rim, a slightly different profile height on any tire is enough to throw it off and set all three of those lights. My lights come after I've been on the highway at FASTER than 70mph for about 5 minutes. When I shut the engine down and then restart....its all reset and will not come back on unless I go over 70mph for about 5 minutes.

OR

You have a sensor issue in one of more wheel hubs.

Any codes?

.

myk

iTrader: (4)

Check your rear wheel speed sensors for bad wiring or debris on the sensors themselves. I checked mine and they were COATED with so much metallic debris it looked like a fur ball on a stick...

nascarnate326

iTrader: (1)

Ill have to check that.

After I put my headers on my ABS/ ASR is F'd from the time I start my car.

Not a huge deal but the lights are annoying.

Nathan C

on my 1994 daily driver Firebird the abs inops light came on and it turned out that the center mounted brake light had both of the bulbs burned out. You might want to check yours

myk

iTrader: (4)

I let it go for a while, and what started happening was that the car would think the wheels were slipping and would apply the traction control randomly-VERY annoying...

mike171562

iTrader: (4)

My ABS Inop light came on after I did a head/motor mount swap.

peterock98

iTrader: (25)

ABS module could be bad.

jameswoodlee

iTrader: (5)

there are no codes showing up just the lights

LS6427

iTrader: (2)

You won't get codes. I never have and I get those 3 lights coming on every day I drive.

Read post two....does either apply to you or not? Different sizes tires is the main cause for most?

.

peterock98

iTrader: (25)

You will need a snap on scanner to pull the abs codes .The 89 dollar scanner won't read them.

jameswoodlee

iTrader: (5)

It shows no codes on them Im going to get the plugs cleaned out Im hoping there just dirty or something. There not on all the time sometimes right when I turn the car on other times afterr 5 min of driving they appear

myk

iTrader: (4)

Plugs? This won't be an engine issue, the problem is either the speed sensors (cheapest, easiest), could be the ABS module (can be pricey), or even better it could be like 'LS said and it's a wheel/tire size issue. Or you could have the car scanned for body codes at a dealer.

'LS, quick question: shouldn't my lights be coming on too after switching from 16" stockers to 17" speedlines?

1SLwLS1

iTrader: (6)

Mine used to come on when I would drive > 90 MPH after I first bought the car. About a year ago, in the Texas heat, the lights would come on after driving for a while, regardless if I stayed under 90 MPH or even 60 MPH. About 6 months ago, they just stayed on all the time, no matter what.

I checked all bulbs, they were good.
I had the same OAH tires front and rear.
I did a front suspension overhaul and replaced the hubs - still on.
I checked all the wiring and grounds - still on.

About 4 weeks ago I found someone with a used ABS module they were willing to sell for $75. Instead of replacing the entire unit and going through the hassle of bleeding everything, I just replaced the EBCM on the ABS module. You remove (2) connectors, the sensor harness, and the pump power supply. Then it is (6) torx screws to pull the EBCM from the module and swap it out.

My lights haven't come on since and I can decide when I want to take off traction control. If everything aside from the ABS module is checked off your list, try and find an ABS module from the same year as yours and make sure you verify if you have a 3 channel or 4 channel system.

3 channel for 2 sensors up front, 1 sensor on the pumpkin, no traction control.
4 channel for 2 sensors up front, 2 sensors out back, with traction control.

peterock98

iTrader: (25)

I agree with the abs module.