Suzuki sidekick 1995 5 door 16V 1.6 motor I have trouble with my brakes - the front wheels vibrate when I brake t 90 km/h,

It is not wheel wobble but vibration from the front brakes. The front brake rotors have worn unevenly (known as disc thickness variation - DTV) and when this occurs you will get vibration from the front rotors as you apply the brakes and it is especially noticeable when braking on down hill runs. DTV is usually caused by poor alignment of the rotors on the hub. In other words sloppy installation procedures.

You will need to replace both the rotors and brake pads on the front and make sure the business that does the work properly checks the rotor for run out.


Disc Thickness Variation DTV Issue 14 Bendix Brakes

DTV Disc Thickness Variation Disc Brakes Australia

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The two matters are unrelated. The squeaking brakes are because you need new brake pads, if you have new pads... the mechanic failed to use brake shim grease which stops the squeak. In severe cases, the front disc brakes may be scored... scratched deeply and require replacement. If you replace the front disc pads, replace the rear brake shoes as well! The service engine light is timed by your dealer to remind you when to take your car in for a service check. Many models have a sequence of steps that one can find on-line to reset the service indicator light back to re-zero the count.

stop and do not drive, get a brake man, in the loop, danger !


this is cause by the MC, the master cylinder, no ABS in 92
not replacing relic calipers in pairs is dumb, sorry risking life and limb using old 20 year old calipers is not bright. a fact, not opinion.
are both caliper locking, at ONCE?
that is the key question .
reasons. (answer for BOTH clipers locking at once)
1: bad calipers ,no piston lasts for 21 years, ever. (relic)
2: the MC piston is not retraced,

#2 is caused for 2 or 3 reasons,,,,
2a; brake pedal adjusted such that the factory play behind piston rod is not zero or minus, causing the MC to lock hydraulically.
2b; the booster was changed and the PP mechanic (weak) did not
RTM , they did not adjust the new booster, calibration ring stated in the FSM.
3: if one caliper (good) locks the rubber flex line is breaking down
inside and is clogged. 21 year old lines are not good to trust.
not life and limb or mine when you hit me...
that too, is fact.

the guide pins must be free, and antisieze lubed or with special
99cent OTC brake grease (very high temp rated,) ask.
the pistons rust. DOT3/4 is hygroscopic and will rust in 21 years.
not a guess. fact.
One other point, 21 year old caliper seals will no longer have
stiction, they fail to retract the piston and the pad drag. wasting fuel and pads. new seals. better, newly rebuilt Raybestos calipers
will make them safe.
fixing brakes in a serial fashion is asking for trouble.
do not cheap out on brakes.

unfortunately if the truck is equipped with ceramic pads.... well there is the draw back, its a trade off.. like a semi truck, most of them are noisey coming to a stop. lots of weight with a lot of friction causes a vibration thats annoying.SO 1) You could opt for softer material in the brake pads, which would directly relate to a more frequent pad change, but the noise will be gone, and 2) you could try to drive a little ways at about 35 mph and just REST your foot on the brake pad for approximately 1/4 mile then come GENTLY to a stop. procedeure called burnishing.2 times should be plenty, and give the brakes a chance to cool beore the second burnish,( about 3 to 4 mins of cool time) let me know what happens, and good luck!

THE Steering wheel will only shake when either the wheels are out of balance {like weights come off or had a puncture etc} or wheel bearing worn badly,Tracking,out of alignment etc but can also be caused if only WHEN BRAKING it dose it that is the front Rotors have to be replaced and new Disc Pads also.

yes,maybe change motor mounts.













TIM.....

How about motor mounts.

Brake Pads
Removal & Installation
Front





3.4L front disc brake assembly









4.0L and 4.7L front disc brake assembly




To Remove:

1. Before servicing the vehicle, refer to the precautions in the beginning of
   this section.
   
2. Remove or disconnect the following:
   
   
   
   • Front wheel
     
   • Clip, 2 caliper pins, the anti-rattle spring then remove the 2 brake pads
     and the 4 anti-squeal shims

To Install:

CAUTION
Only replace brake pads on 1 side of the
vehicle at a time. Failure to use this procedure could cause the caliper pistons
on the opposite side of the vehicle to pop out requiring the reconditioning or
replacement of the brake caliper.

1. Remove a small amount of brake fluid from the master cylinder.
   
2. Install a used brake pad into the caliper and compress the caliper pistons.
   
3. Apply disc brake grease to both sides of the inner anti-squeal shims.
   
4. Install or connect the following:
   
   
   
   • Anti-squeal shims to the new brake pads
     NOTE: When replacing worn pads, the anti-squeal shims must be replaced
     together with the pads.
     
     
   • 2 brake pads
     
   • Anti-rattle spring and the 2 caliper pins
     
   • Clip
     
   • Front wheel
   
   
5. Depress the brake pedal several times to seat the brake pads.
   
6. Check the brake fluid level and top off as needed.

Rear
To Remove:

1. Before servicing the vehicle, refer to the precautions in the beginning of
   this section.
   
2. Remove or disconnect the following:
   
   
   
   • Rear wheel
     
     
     
     
     
     
     
     
     
     
     
   • 2 cylinder slide pins from rear caliper assembly
     
   • Caliper assembly from rear caliper mounting
     
   • 2 brake pads with anti-squeal shims from rear caliper mounting
     
   • 2 anti-squeal shims from each disc brake pads
     
   • Pad wear indicator plate from the inner side disc brake pad
     
   • 4 pad support plates from the rear caliper mounting

To Install:

1. Install or connect the following:
   
   
   
   • 4 pad support plates on the rear caliper mounting
     
   • Pad wear indicator plate on the inside brake pad
     Note: Install the pad wear indicator facing downward.
     
     
   • Anti-squeal shims on each brake pad
     
   • 2 disc brake pads with anti-squeal shims to the caliper assembly
   
   
2. Apply lithium soap base glycol grease to the sliding part of 2 caliper slide
   pins.
   
3. Install or connect the following:
   
   
   
   • Disc brake caliper assembly with 2 caliper slide pins
     
   • Torque to 65 ft-lbs (88 Nm)
     
   • Rear wheel
   
   
4. Depress the brake pedal several times to seat the brake pads.
   
5. Check the brake fluid level and top off as needed.

--- Removal & Installation
Front
To Remove:

1. Before servicing the vehicle, refer to the precautions in the beginning of
   this section.
   
2. Remove or disconnect the following:
   
   
   
   • Front wheel
     
   • Front brake caliper assembly
   
   
3. Make matchmarks on the disc and the axle hub.
   
4. Remove the front disc.

To Install:

1. Align matchmarks and disc onto axle hub.
   
2. Install or connect the following:
   
   
   
   • Front brake caliper assembly with the 2 bolts
     
     
     
     1. Torque to 90 ft-lbs (123 Nm)
     
     
   • Front wheel

you have warped frt disc rotors replace them and the brake pads!

Your car has front disc brakes, the disc's are running out of true, as u apply the brake this causes the steering wheel to shake, the higher the speed the more u feel this, the solution is to have the front brake disc's machined true again on a brake lathe or if they are to thin replace them.