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Discussion Starter · #1 ·
Hi,

I'm new to the forums.

My wife bought a 3 a few months ago.

I would like to ask a couple of questions

1. The brake pedal suddenly went soft, it needs to be depressed almost all the way to stop the car.

I took it to a place and the guy said it was air in the lines, but it didn't fixed it.

I then took it to another place, they say it is most likely the master cylinder, also it seems like there is moisture around the brake booster.

Do you guys think that it may be the master cylinder.



2. The engine when idling has a sort of hiccups / jerk motion, I change it to manual and it continues, it only stops when in neutral or park.

The seller said he took it to a place and replace the sparkplugs but the problem persists.

What do you think that may be?


I'm sorry if this is not the correct forum to post this question

Thank you
 

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I have a 2010 Mazda 3 S GT and my suggestion to you would be to take it to an AutoZone or other auto parts store. They may not be able to tell you what's wrong with the brakes, but they have a diagnostic tool that they can plug in and maybe diagnose or at least see if errors come up for the hiccup in the engine. They will do this for free. As for the brakes, can you take it to a place that specializes in brakes and get it diagnosed? I live in Las Vegas and we have a place called Purrfect auto. They are good at finding problems and they don't charge to do so. If you've got one where you live, maybe they can take a look without it costing you anything. My car has been fantastic so far (75,000 miles). I've had to replace an engine mount - this was something that was broken and caused some rough idling. I've also had to recharge the air conditioner, get new brakes and change the tires but that is all. It's been a great car. Good luck with yours.
 

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Discussion Starter · #3 ·
Thank you.

I forgot to mention that I am not in the US.

I'm from the Dominican Republic,

My wife took the car to the Mazda dealer the brake pads were change (this was before the current brake problems)

they said that the hiccup happened when the AC got too cold and not to worry about it
 

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Discussion Starter · #4 ·
Update

In case someone else goes through this.


The mechanic check the master cylinder and replace the seals.

The brakes were a little bit better but still went too low

After that the lines were bled (sp?)

That had no effect

Then he took the car and accelerated to a high speed and slam on the brakes a few times.


That make the brakes go back to normal.


I read about that but could not get fast enough for this to work.

Cheers!
 
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