VIBRATION WHEN APPLYING BRAKES

NEED 4 SPEED · Post by **NEED 4 SPEED** » 22 Dec 2005, 10:10

I HAVE A 93 850 GLT AND WHENEVER I APPLY THE BRAKES, VIBRATION OCCURS. ALSO THE ABS LIGHT STAYS ON. HOW DOES ONE KNOW WHEN THE CAR IS IN ABS MODE? IS THE CAR ALWAYS IN ABS MODE? I HAVE CHANGED THE FRONT ROTORS, THE PADS ARE GOOD WITH LOTS OF MEAT LEFT SO I LEFT THEM ALONE. HAVE NOT CHECKED THE REARS YET. ALSO MY BACKUP LIGHTS DO NOT COME ON WHEN I PUT THE CAR IN REVERSE. THE FUSE IS GOOD AND THE BULBS ARE GOOD. HELP!!!!

NEED 4 SPEED

White850Turbo · Post by **White850Turbo** » 23 Dec 2005, 07:51

Vibration coming from the front? What type of rotors did you use? It sounds to me like warped rotors. As for the reverse light thing, it sounds like a faulty PNP switch if the car is an automatic or a faulty reverse light switch if the car is a 5-spd.

Post by **robert213** » 23 Dec 2005, 09:49

Vibration while applying brakes...

Possible warped rotors.
Possible front/back brake fluid regulator.
Possible bad inner tie rod ends.
Possible bad outter tie rod ends.
Possible bad steering idler arm.
Possible bad ball-joints.

Guest · Post by **Guest** » 29 Dec 2005, 13:14

Possible bad inner tie rod ends.
Possible bad outter tie rod ends.
Possible bad steering idler arm.
Possible bad ball-joints.

WOULDN'T THESE SYMTOMS BE FELT DURING DRIVING WITHOUT THE BRAKES BEING APPLIED?

Post by **matthew1** » 29 Dec 2005, 14:34

I'd change the rear rotors, sounds like it's them.

As for ABS, that module cracks and fails, causing the always-on ABS light. This thread has more about it, and where to send it to get it fixed:
https://www.matthewsvolvosite.com/chat/p ... hp?p=17308

On these two items, statistically speaking, my suggestions are probably the cure. But -- you never know for sure in real life, let alone over the Internet.

Smash2 · Post by **Smash2** » 02 Jan 2006, 21:42

Inner tie rod ends? How many tie rod ends does a rack and pinion system have? Idler arm? Perhaps the 'guest' poster above was being general.

I have still got a small vibration with the brakes - I've replaced tires, all 4 rotors/pads, tie rod ends and lower ball joints. I'm about to give up - it was horrible before, now just slightly annoying, only felt stopping at say 70-80 MPH.

Any more ideas I'm all ears!

Smash

Post by **MadeInJapan** » 03 Jan 2006, 20:07

Only thing you haven't mentioned are calipers...sticking slightly maybe??