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Help with brake problems on my Santa Fe

3 messages,  Last post on Apr 13, 2009 at 6:10 AM

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What is this discussion about? Hyundai Santa Fe, Brakes, SUV

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#1 of 3 Help with brake problems. by carowner6 Feb 14, 2009 (11:58 pm)
I have a 2001 Santa Fe. I have had problems recently with the brake pedal. It usually happens when it is cold and on initial startup. The brake pedal only presses down slightly, therefore only working slightly, and can take MANY attempts to press down normally. I have had the brakes inspected and said to be fine. Tried flushing brakes and replacing fluid but problem reoccured again 2 weeks later. Has anyone else had this problem? Please advise. Replies to this message: tidester (Feb 15, 2009 12:25 pm) ineedajob (Apr 13, 2009 6:10 am)
#2 of 3 Re: Help with brake problems. [carowner6] by tidester HOST Feb 15, 2009 (12:25 pm)
Replying to: carowner6 (Feb 14, 2009 11:58 pm) You said you had the brakes inspected. Did they inspect the brake pedal? It sounds like the problem may be there.   tidester, host SUVs and Smart Shopper
#3 of 3 Re: Help with brake problems. [carowner6] by ineedajob Apr 13, 2009 (6:10 am)
Replying to: carowner6 (Feb 14, 2009 11:58 pm) You either have a bad Master Cylinder, Power brake unit or a vacuum leak. The Master Cylinder is what transforms your foot pressure to the brakes on your car. A car without a power brake unit would (appear) like the brakes are weak, when in reality you just have to press hard. The Power brake unit increases your foot pressure so you don’t have to push so hard for the brakes to engage. A good test would be this. Find a safe place to do this with a SLIGHT incline. Park your SantaFe and turn the engine off. Place the car in Neutral and take off the parking brake (the car should start to roll down the incline). Press the brake (it should feel normal, very little pressure like when you normally drive). Press the break maybe 10 more times and you will use up all the left over vacuum in the lines. Now, it’s VERY hard to stop. Does it feel the same as when you start the car (I would guess yes). If so, you know you have either a vacuum leak or power booster leak. Go ahead and start your car again and you’ll feel the brakes are easy to push again. You can put a vacuum gauge on the power booster and watch it over night (if possible) and see if it goes down (it will somewhat). I would guess you most likely have a bad power brake booster. Flushing will have no effect on this, nor replacing pads. It’s further up the line. Good Luck

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