Question about 1997 Chevrolet Venture

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Did a brake job on all 4 wheels and changed master cylinder, but still have a low brake pedal

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  • zulumen Aug 08, 2008

    brake pedal goes to the bottom i ñve bled and everything was rifgt but now while idling the pedal goes all the way down very slowly but all the way

  • kessale May 24, 2009

    Last month my 2004 Venture van suddently stopped. I had to changed the fuel pump coil US$85 at a local mechanic to make it run, after that and almost immidiately when brakes applied seems to have little pressure. Mashing pedal as hard as possible only makes van come to a slow long stop

  • kessale May 24, 2009

    cont . . . I brought the van to a local mechanic, he suggested changing the air compressor, I didn't buy his idea, so I went to GM dealer and they said the following brake system parts needs to be changed: Power Brake Booster, Brake master cylinder, front pad kit, front brake rotors, brake fluid, a total of US$1000.00 parts excluding labour

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I think you have to bleed it in a X configartion ,,, right front then left rear then left front then right rear,, lot of them have to be bleed this way,, make sure your read wheel cylinders aren;t leaking!

Posted on Aug 13, 2008

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It is best to have a flexible tube from the bleed valve into a glass container that contains a little brake fluid already.

Posted on Jul 30, 2008

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  • Chevrolet Master
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You have air in the brake hydraulic system, to bleed the brakes properly do this, go to the right rear wheel and have some one pump the brake pedal at least ten times, then ope bleed valve at back of wheel cylinder, do this until you hear a spitting sound, which indicates air, do this at every wheel in this order, RR, LR, RF, LF. check the Master cylinder reservoir each time you do a wheel and top it off. If you make a mess brake fluid washes off with water, don't get it on any painted surface, it will take the paint off. Hope this helps.

Posted on Jul 30, 2008

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I have a 1980 datsun 1200 ldv have replaced the master cylinder Bled all 4 wheels.Pedal stays low +_ 10 mm from floorboard Do not find air in the system had adjusted all 4 wheels brakes thanks


Did you properly bench bleed the master cylinder itself before installing? It must be bled or there will be air trapped inside the master cylinder itself that no amount of wheel bleeding will remove.

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How can i tell if master cylinder on my 91 buick park ave is done the break pedal goa all the way down as soon as i turn car on. o not see any fluid leaks. car stops if you pump breaks but slowly?


Most likely you need brake job on front and rear. to test if the pads are worn on the rear set the emergency brake then push down on the brake. does it come up? if it does This means the rear pads are bad and most likely the front. You will want to check the master cylinder for fluid if it is low you will have to replace with DOT3 Fluid once it is full you may have to bleed the system to see if the brakes come up. If the fluid is ok and The pads are not wore out then you will have to check the master cylinder to do this you need to jack up the car one wheel at a time and test by pressing brake pedal down slowly till the wheel will not turn. If the wheels stop on all four wheels when you have done this test then you will need to replace the pads and shoes. If the master cylinder is defective either the front wheels won't stop or the rear won't stop turning when you press the pedal down. The Master cylinder is $39.00 with exchange, but you want to make sure the pads are good the rear shoes are good and the brakes are adjusted. Here is the web page for the parts you need. If you need help doing a brake job let me know and I will give you whatever information you would need to do the job with. You can test the master cylinder if you have rubber gloves too, just pop the lid off the master cylinder and have someone slowly push the pedal down with your finger on the front port see it you get fluid blowing out the hole when the pedal is pushed down. If you do the cup is bypassing and it needs to be replaced. Hope this helps.
http://shop.advanceautoparts.com/webapp/wcs/stores/servlet/subcategory_Brake-Hydraulics_-49997377_13557_10151_10051_-1___

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adjust your rear shoes up so that the rear drums just turn, with them ajusted to a low setting the brake pedal will be low .
also when you start your engine it is noral for the pedal to drop because of the boster ! [ but not to the floor ]
Bruce Pike

Oct 10, 2009 | 1989 Chevrolet C1500

2 Answers

Brakes problem


This means that you either still have a leak, or there is still air in the line. Be sure that you bleed a lot for a master cylinder change out. Also if the bench bleed was not preformed then there will be a tremendous amount of air in the system. A bench bleed is simply filling the master cylinder and priming it before you install it. Hope this helps. Good luck.

Aug 16, 2009 | 1994 Honda Accord

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1998 chevy s10- brake pedal goes to the floor- just changed master cylinder, brake booster, and bled brake lines- did not help


Ok the BRAKE BOOSTER is ONLY there to give you pwer assisted, otherwise NO POWER BRAKES. ( not anything to do with the low brake pedal ) Hopefully the junkyard master cylinder was in better shape than your original. AS far a bleedinda system, heres what I do. First with a1998 vehicle, I would go to ALL 4 wheels , OPEN & CLOSE slightly each bleeder to insure none of them are FROZEN, and they do freeze shut ENSUE THE MASTER CYLINDER IS FULL and CLOSED Now with an assistant sitting in the drivers seat, ready to pump the brakes, and ABLE TO HEAR YOU. Go to the furthest wheel from the master which would be the R/R. DONT touch anything yet. Tell the asst too slowly pump the brake pedal till it gets hard, and then HOLD THE PEDAL DOWN ( and dont let up on it until the pedal drops. If the ast lets up before the bleeder is closed you **** in air.Repeat at each wheel til the pedal stays hard. Hope this helps

Apr 12, 2009 | 1988 Chevrolet C1500

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Brake pedal travel gets worse over 6 months and feels spongy. problem recurs again after bleeding the brakes.


Any leakage at the brake wheel cylinders? If so, you must replace leaking wheel cylinders.

More likely is a worn master cylinder. Replacement is necessary. This is not typically a diffucult job, but important to do it right. It sounds like you have the brake bleeding down, and you will need to do this after the master cylinder replacement! Be sure to bleed all 4 corners!

Regards,

Brian

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