abs on too much on early and crunching

[tyaquint]

hello, i have a 98 blazer and my abs is coming on too much and stays the abs sound stays on sometimes even when i dont have the brakes applied. no codes or lights on. and somes times if it comes on early if makes a loud crunching grinding sound that i ahve to push through the brakes to get it to stop. so all in all my abs comes on too much, too early,abs motor sound stays on too long, and sometimes effects the brakes, no codes, no abs light on. my brake pads are new, my abs terminals into the hubs are clean!

any ideas

T'

[BlazerLT]

Yea, the ABS is not active only when the brakes are applied and can still go on for a second or so after they have gone into action.

The crunching grinding noise is the ABS working.

[tyaquint]

i know the normal abs sound works, but i am in a parking lot going 5mph and if i just tap the brakes it goes off. i have had my blazer for 3 yrs and it has never acted like this. and the crunching is way worse than normal. shit the abs sound goes off sometimes just by tapping my brakes a lil. u think its a relay? i know its not normal how it is!

[BlazerLT]

When you are tapping the brake, is the front tires actually sliding due to the conditions being slippery or is this happening even without a loss in traction.

[tyaquint]

happens all the time, no slick conditions it happens, pulling in to a parking spot slowly in dry parking lot and it happens...

[BlazerLT]

Thinking one of the speed sensors are screwed.

[tyaquint]

speed sensors, where are those located and how can you tell if they are shot. again i have no codes so its odd. also waht does a abs relay do? can that be it or no?

t"

[Realitydept]

if its coming on when you don't have the brakes applied, it sounds like the system is going into "self test" which could be the relay or the power wire going to the system has an intermittent fault.

[tyaquint]

no just when apply the brakes, its too sensative, thats the problem, stays on tooo long comes on even at 2 mph.

[chcknugget]

This is something I would think about taking to the dealer to analyze. They can plug into your ABS computer and find the fault.

Also there was a recall on some component of the abs in my 96. It seems like they just put in a new wiring harness. I doubt this is your problem, but maybe the recall was designed to prevent something you got.

[Fireplug]

DONT MESS WITH THE ABS GO TO A DEALER AND HAVE IT CHECK OUT. It might be just a dirty front wheel speed sensor

[tyaquint]

first i hate dealers they rip u off one bad!

ok this may help some people figure out my problem, i drove around today to see what is going on more.

it is to the point where everytime i stop it comes on. so its something telling it to come on every stop no matter the speed or anything. usually kicks in at about 10mph or less. my abs light came on and my brakes seemed normal again, but then on my way to ge the abs light code tested it went off and my problem was back. i hope this helps.

wheel speed sensor? where do i find that at on the blazer? my be a dumb ? but

thanks everyone

[Fireplug]

Then you are going to the wrong place.
I have worked for Dealers for 15 years and I can say some are better then others BUT you want to risk your life or your familys life or someone else who happens to be on the road just because you dont want to be taken for a lot of cash???? You are joking right??? Please tell me you are joking!!

[tyaquint]

hey this forum is for car opinions not for personal ones, and as for dealers if you idiots can figure this shit out anyone can. as for the safety of my family did i say i was driving my car still? no i said i tookit around the block to see the symptoms? and you dont think dealers over charge???? you muct be joking, please tell me your joking. hu hu.

part price at dealer $250.00
part price at auto zone $70.00 (maybe if that)
knowing you didnt give dealership all that extra money

priceless

[tyaquint]

chcknugget, can they tell whats wrong even if no codes are showing or no abs light on?

Blazer Lt do you konw where the speed sensor are

my last message was only for one person no one else!!