Question about 2010 Fiat 500 1.2
All 3 brake lights are on perm. Slight movement (drop) on pedal. Foot UNDER pedal to support will turn lights off but hard to drive! Engine now also loses power until this lift of brake pedal routine...
Does it pull to one side or the other when rolling? If so, then you may have a stuck caliper. If not, then you likely have a bad master cylinder and need to replace. If it is a stuck caliper, it would be wisest to replace BOTH calipers. If the brake pedal feels hard when you push, that would be another indicator the master cylinder is bad - but you may not have the hardness in the pedal. If pulling up on the pedal relieves the problem, I would suspect the master cylinder first. Driving on it could damage many components, and replacing them all may be expensive - I recommend verifying the master cylinder is bad and replacement before driving!!
Posted on Mar 28, 2014
Testimonial: "Good points. The car is straight when rolling and when under braking. Equally no harshness or jerky braking. I will check out the master cyclinder. Thanks."
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Posted on Jan 02, 2017
If two different mechanics, including a fiat dealer, already put their hands on your car, there is not much that I can say.
This kind of noise are often caused by bad rotor discs or locking up brake pads, I assume that this had been previously checked and fixed .
about the steering rack problem, when the steering rack has troubles the noise is from the steering rack itself and from the front of the car, if you are sure the noise is from wheel check brakes, or, if the noise does not cohincide with braking, check the wheel bearings.
See here on common brake noises, cause and identifying them.
about "fiat would not allow any more work on this problem", that sounds a bit like rubbish, call Fiat in your country (put Fiat in google, then find support/ contact), and ask them about their policies. I do not think from description this has got to do with steering, unless you get the noise only when steering, nyou usually get also vibrations on steering wheel in this case.
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Posted on Sep 11, 2008
it could be that the master cylinder is bad or the brake booster is bad also check the vacum hose going to the brake booster if it has a hole in it it will lose pressure and make the engine lose rpms
Posted on Aug 23, 2009
something is wrong with the engine ,could be anything from a vacumn pipe off to the vapour control for the fuel tank ,ask a local mechanic to have a look for you is the best advice i can give as too many variables
Posted on Dec 21, 2010
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