Question about 2001 Chrysler PT Cruiser

1 Answer

Chrysler pt cruser

Re- callipers locking on.

Hi thanks for your earlier answer, the car has 36,000 miles on the clock.
If, as you suggested debris has come up the hoses and into the master cylinder, why would it only affect the front callipers? One would expect all four callipers to lock, or at least one back and one front as there is a duel circuit on the system.
Cheers Simon.

Posted by on

  • simonjamesk Jan 17, 2009

    Hi Alan,

    thanks for the reply, lots of useful information and things to try.

    The brakes are free at the moment. This is an intermitent fault which i am trying to stop happening again, so one more question, why is it that when the brakes locked last time, the garage removed the calipers and the pistons could be depressed with a little pressure? If there was a restriction in the master cylinder you would expect them not to move.

    Cheers Simon.

  • Tim Govan Apr 06, 2009

    Hi. I own a 2002 PT Cruiser, Diesel, and have/am having problems with the drivers side front caliper. 5 months ago it 'seized' so I took it to the local garage who could find nothing wrong as the piston had retracted back in to the caliper housing. Last weekend the same thing happen (lots of smoke from the wheel arch when I drove the car).so I took the car to another garage and they found that the caliper had 'stuck' out. They managed to return the piston in to the housing. with little pressure, but could not see any problems, as the caliper then moved freely, and I still had over 1 cm of pad left. My question: Is the calper faulty or is it the flexi-hose.? I do not want to buy a new caliper if it is not the problem. Do you think that if I cleaned the piston as much as is possible that it may help.?

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  • 731 Answers

That's a good question, but for some reason I have found through the 35 years I have been doing brakes that for some strange reason the front calipers tend to get the debris because everything is pushed forward when you release the brakes.

TEST: When you calipers lock up, here is what want you to do to check to see if it is the master cylinder. Release the pressure by loosing the fittings at the master cylinder, if you can then turn the front wheels by hand, then you know for sure that the restriction is in the master cylinder.

If you still can't move the wheels then the problem is either in the front hoses, the calipers or the proportioning valve which adjust the pressure from front to rear. Sence the vehicle is low mileage its hard to believe it would be the lines themselves.

Let me know what you find after releasing the master cylinder fittings.

Waiting for reply!

Posted on Jan 17, 2009

  • Big A's Auto Repair
    Big A's Auto Repair Jan 18, 2009

    Hi Simon;



    There is a big difference between the calipers releasing themselves and being forced to release, in most cases the calipers can stick enough to keep the car from moving freely, but is not restricted to the point that you cannot free them.



    Once the calipers stick again the test procedure I gave you should help in determining which one is the cause.



    Thanks for replying and good luck my friend. Allen

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