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1997 Pontiac Sunfire. The right rear brakes lock up.

I replaced the drums and the pads. still have the same problem. I don't see any oil leaking around the wheel cylinder. Seems to work ok with the drum off. Any ideas?

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  • macmatic Mar 18, 2009

    I have the same problem with a 2000 Sunfire. I bought the car from my GF when she was buying a Fit and she had the same problem too. Several shops replaced her rear drums and shoes which solves the problem for a couple of months but it always comes back. I'm thinking maybe it has a bad/sticky brake proportioning valve? I wish I'd been able to work on it more for her! Last darn shop replaced month old pads rotors on her!

    Specifics: Right rear locks up, especially when its been raining and the car has been sitting. Also first thing in the morning. It hasn't gotten bad on me yet but it was UNSAFE when she had it, the ABS would come on unexpectedly and cause very long stops. Could have caused several accidents. When the problem is just starting the cycle again it feels like the rear end squats down when you brake. Soon this turns into locking up.


  • Anonymous May 01, 2009

    Same problem.

    I know I have a questionable brake cylinder in the left rear.

    I think there may be a bubble in the brake lines.

    I am going to try and bleed the brakes today to try and sole it...

  • Patrick Dennehy May 11, 2010

    Just wondering what your experience is on adjusting drum brakes. Are you getting both rear wheels adjusted the same before you set the wheels back on the ground? Let me know... TT

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5 Suggested Answers

fixincars
  • 335 Answers

SOURCE: the brake light on the

There is a level switch in the master cylinder if the fluid level is low it will turn on the light and If you pressure or vacuum bleed the brakes you will center the proporting valve switch that warns of low brake pressure in either Front or rear.
Vacuum bleeding I have found to work the best.
Make sure the Park brake lever is all the way released. If you find this informationn helpful please leave me a favorable rating and by all means contact me if I can be of any further help.
www.aceautomotive1.com

Posted on Aug 10, 2008

  • 1861 Answers

SOURCE: cant fit drums over pads

You need to retract the brake shoes, via the center adjuster mechanism. As your old brake wore, the adjuster moved the shoes outward. Simply move the adjuster to retract the shoes, then slide the drum on. Then, readjust the rear shoes.

Posted on Apr 06, 2009

  • 701 Answers

SOURCE: need location of crank angle sensor on 1997 pontiac sunfire 2.2 liter

Hello oldiro: My name is Roger and I can help. From under the vehicle look up between the transmission and the side of the block. Mid motor above the pan rail there is a bolted in sensor. This should be the crank sensor.It will have two wires plugged in to it. Please rate this answer as this lets us know you received the information you asked for. Should you need further help please just ask. Thank You for using FixYa. Roger

Posted on May 06, 2009

csmock132
  • 4669 Answers

SOURCE: Back brake drum won't go back on

The parking brake cable is stuck in the applied position. Try to hook the parking brake apply arm with a pry bar to the wheel hub to pry it out or disconnect the parking brake cable.

Posted on May 10, 2009

  • 36 Answers

SOURCE: I can't remove the rear brake drums off my 2005

I do brakes on these all the time.On all of the brake drums after some time they get hard to remove since the drum rusts to the axleor bearing hub. When I remove the wheel and the clips that usually come from the factory around a couple of the studs I apply heat to the drum and spin the hub.9A small propane torch will suffice since it doesn't require a lot of heat. As it warms up the drum expands and ships off the hub. Do not heat the hub or it will grow with the drum. When warm it will tap off or a light pry from the back of the drum. Without heat I cannot remove 90% of these drums.

Posted on Aug 22, 2009

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1 Answer

My rear brakes grabbing on 2000 sunfire need help


Grabbing drum brakes are usually caused by moisture on the shoes. This can be oil, water, brake fluid, ect. Most likely unless it's been raining really hard for a while you probably have a wheel cylinder leaking brake fluid and they will need to be replaced.

Oct 31, 2010 | Pontiac Sunfire Cars & Trucks

1 Answer

Rear brakes lock up very easy


leaking brake fluid or lining dust causes locking. take drums off and check brake cylinders for leakage at rubber boots. If leaking, replace cylinders and clean shoes with brake cleaner. If no leakage, clean out all dust with brake cleaner. Adjust shoes up tight to drum and reinstall. Let me know if you have questions or need instructions.

Oct 19, 2010 | 1999 Pontiac Sunfire

1 Answer

Locked rear wheels


you will have to try to move it. or you need to remove the wheels, brakes. if it has drums you can adjust them away from the shoes and it will spin free. if it has disc you may need to remove the calipers and then the pads. then remove the discs and clean them or replace them and the pads. go with an organic set of pads and they will not rust stuck again

Nov 30, 2009 | 1997 Pontiac Sunfire

2 Answers

I own a 1997 pontiac sunfire back right tire locking.


It seems that the backing plates are dirty and not allowing the brake shoe to return to it's proper position, rust builds up while not in use and causes the wheel to lock

Nov 07, 2009 | 1997 Pontiac Sunfire

1 Answer

Back brakes lock up


There are several conditions that can cause this to happen. You want to start out by checking the parking brake assembly, particularly the cable for the right rear or passenger side brake. Make certain the cable moves freely when the park brake is applied and released completely when the park brake is disengaged.
Next, remove the rear brake drum and check for any oil, grease or brake fluid contamination of the brake shoes. Any contamination of this type will cause the brake to hang up when applied.
If that checks good, make sure the brake system hardware if working properly and components have not dislodged from there installed position be sure there are no broken return springs or very rusted and weak components.
Generally what happens is a wheel cylinder begins to leak, contaminated the shoes and cause them to become sticky when the shoe contacts the drum or a return spring breaks or comes off for various reasons.
Check it out and let me know.
Regards,

Oct 04, 2009 | 1997 Pontiac Sunfire

1 Answer

NEW DRUMS AND NOW THERE IS SCRUBBING SOUND


If you are unable to do it yourself, you may want to take it to a repair shop and have them pull off the rear drums and make sure none of the hardware (springs, clips, etc.) have come loose and are dragging inside the drum. Hope this helps.

Mar 10, 2009 | 1997 Pontiac Sunfire

1 Answer

I JUST HAD MY REAR DRUMS AND ETC REPLACED ON MY PONTIAC SUNFIRE (1997). I DROVE FROM MS TO GA AND NOW THERE IS A SCRUBBING SOUND WHENEVER I APPPLY THE BRAKES. WHAT IS CAUSING THAT???


Take it in and have it checked, may just need an adjustment but don't take any chances. A piece of hardware could have come loose, fix it now before you damage your new drums.

Mar 10, 2009 | 1997 Pontiac Sunfire

1 Answer

Rear right brake locks and studders


Get your caliber replaced and if it still has the factory rotor also get that replaced. Recommended to get both replaced at the same time.

Jan 10, 2009 | 1997 Pontiac Sunfire

1 Answer

Brakes pulsate real hard


That is just the ABS system at work. It is supposed to prevent your wheels from locking which often makes the brake pulsate, especially in wet weather or or snow or ice. The only way to really stop this is to disable to ABS by unplugging it and removing the fuse. This will make the ABS light appear in your dash, but your brakes will stop pulsating.

Jul 14, 2008 | 1997 Pontiac Sunfire

1 Answer

How to deglaze brakes, 2002 Ponitac sunfire


ok for the front brakes ,, change the pads if they need it and if there glazes you will have to get them machined by a machanic shop if u take them off you self and get them done when u put it all back togeather you will have to bleed them there is a nozzle behind the calapiers you pump the brakes 5 times and hold down and another person releases the nozzle to let all the air out repeat untill only fluid comes out both sides and be sure to check your brake lines for any cracks or leaks

-for the rears
if there discs reapeat as above
if there drums
take of the drum blow all the dust out be sure not to breath any in (quite poisin)
check the pads if buggered replace
check the inside of the drums (can also be machanied)
and check the wheel cyilinders if any is leaking
thats as much as i can help
if u do all that u should be fine
remember saftey first

Jul 02, 2008 | 2002 Pontiac Sunfire

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