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Wicked front end shudder

 
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Old 09-08-2011, 10:06 PM
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Wicked front end shudder

New owner of a '92 here...got what I think is an unusual problem.
I just bought the car and the seller claimed it had sat unmoved for a period of time such that the front rotors were shot. Fair enough, I'll plan on doing a brake overhaul...

While driving it home, when I applied the brakes, the front end did a huge amount of shuddering. This was expected, but not to the extent it did. The steering wheel and dashboard shook like crazy. I was able to slow the car, but if I had a crisis situation, I don't think I would have been able to stop. I've driven cars before that had messed up front rotors, but nothing had shaken like this car does.

Also on the drive home, the power steering quit. Further investigation shows that it's most likely leaking from the hard line going into the rack on the driver's side (I could see fluid dripping from the line away from the fitting).

I should add here that while driving and not on the brakes, the car drove, handled, steered (until it ran out of fluid) and shifted exactly as it should have.

I just checked out the front rotors and they look ok. Now I'm wondering if the shudder was in fact a result of bad front brakes. Has anyone heard of or experienced a power steering system that went haywire when applying the brakes? Or, am I thinking too much and the brakes are the culprit and the shuddering is what probably cracked the power steering hard line?

Thanks in advance.
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Old 09-09-2011, 02:37 AM
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Re: Wicked front end shudder

Warped rotors can cause some serious shaking depending on the severity. As for the power steering line, I can't see shaking causing that. I CAN, however, see a high pressure line cracking after going unused for some time and then suddenly fired up. Don't forget that hose is nearly 20 years old (assuming it's oem).

Sounds like you need new rotors and a power steering line. Don't rig it. The system is very, very high pressure. You need to get the actual hose and install it properly (or have a mechanic). It also wouldn't hurt to replace the pads since they will probably be janky from the warpage.
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Old 09-09-2011, 04:01 AM
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Re: Wicked front end shudder

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Originally Posted by RandallSharp View Post
Warped rotors can cause some serious shaking depending on the severity. As for the power steering line, I can't see shaking causing that. I CAN, however, see a high pressure line cracking after going unused for some time and then suddenly fired up. Don't forget that hose is nearly 20 years old (assuming it's oem).

Sounds like you need new rotors and a power steering line. Don't rig it. The system is very, very high pressure. You need to get the actual hose and install it properly (or have a mechanic). It also wouldn't hurt to replace the pads since they will probably be janky from the warpage.
+1, just because you have experience the severity of the shaking before, rotors and pads are probably the culprit especially when breaking, after pads and rotors i would also get an alignment
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Old 09-09-2011, 09:42 AM
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Re: Wicked front end shudder

Thanks for the input. I found the replacement high pressure hose at both Autozone and Rockauto. Before ordering any new parts though, I want to take the hose off and put some compressed air to it to make sure it's the problem.
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Old 09-11-2011, 09:10 AM
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Re: Wicked front end shudder

We got lucky and it was not the high pressure line that was cracked. It was the hardline that ran from the rack to the cooler. Since the line already is made up of sections of metal and rubber tubing hose clamped together, we just cut the end off the metal line and spliced in a piece of bent 3/8" flared line with a short piece of fuel line and clamps.

We also solved the shudder mystery. The front rotors were rusted apart through the cooling fins so there were two separate disks being squeezed together braking.

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Old 09-11-2011, 10:58 AM
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Re: Wicked front end shudder

WHAT THE F*CK!

That's crazy. I'd keep those. They make for a hell of a story, lol.
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it'll sound like an ultralight airplane or a moped exhaust funneled through a kazoo.
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Old 09-11-2011, 01:04 PM
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Re: Wicked front end shudder

yeah thats a pretty crazy picture, i dont think ive ever seen that before
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Old 09-11-2011, 01:13 PM
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Re: Wicked front end shudder

I would totally keep those. Someone used some cheap Chinese bull**** for brake rotors at some point in time.
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Old 09-19-2011, 09:34 AM
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Re: Wicked front end shudder

Weekend work...
Rear brake overhaul done, (new rotors, calipers and pads),
Replaced left outer CV boot with a speedie boot.
Replaced front sway bar bushings

New front rotors & calipers to be delivered today (Rockauto.com).
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Old 09-20-2011, 01:03 PM
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Re: Wicked front end shudder

Front brakes done (10 times easier than the rears).
Brake system completely bled.
Just picked up the new plates, so tonight's the maiden voyage.
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