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Old 12-24-2020, 03:05 PM   #1
SkinnyG
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Steering suddenly hard right - What????

My daily is a '77 Silverado.

Today, my truck is pulling hard right - so much so that I got out and checked the tire pressure expecting to have two full flats. Tires are fine. I have to steer with the wheel turned about 60° to the left just to go straight.

The truck did NOT do this last night when I parked it.

I'm thinking something is wrong in the power steering box control valve.

Any suggestions on where/how to diagnose this further?

Thanks!
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Old 12-24-2020, 03:36 PM   #2
raggedjim
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Re: Steering suddenly hard right - What????

You may have a brake hose that is collapsing on the drivers side and keeping pressure on the disc. I had one do that about 5 years ago. Drive it then carefully put your hand close to the wheel. If it's hotter than the rest then the brake is dragging.
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Old 12-24-2020, 05:04 PM   #3
400/400
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Re: Steering suddenly hard right - What????

Could also be a caliper seizing up. I had to replace my original ones on my ‘85 a couple years ago when it started pulling hard to the drivers side.
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Old 12-24-2020, 06:58 PM   #4
SkinnyG
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Re: Steering suddenly hard right - What????

Even better than that!

Merry Christmas, everyone!

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1961 Apache: "Grabber Orange" Shortboxed, pancake, step-notch, air-ride, boosted-LS
1977 Silverado: Shortboxed & dropped, potato-potato
V8 Pontiac Firefly (Chevy Sprint): The ultimate engine swap: 5.7L in a 1.0L bag
Lotus Super 7 Replica: Scratch-built street-legal rollerskate
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Old 12-24-2020, 07:13 PM   #5
raggedjim
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Re: Steering suddenly hard right - What????

That is about the last thing I would have expected, but, yeap, that'll do it! Glad you found that!

Dang, that Pontiac Firefly is crazy cool.

Merry Christmas!
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Old 12-25-2020, 01:51 AM   #6
kwmech
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Re: Steering suddenly hard right - What????

Snapped the stud from the inside?? I don't think I've ever seen that
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Old 12-25-2020, 09:15 AM   #7
Palf70Step
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Re: Steering suddenly hard right - What????

Wow, I have never seen that either.
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Old 12-25-2020, 11:52 AM   #8
1976gmc20
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Re: Steering suddenly hard right - What????

Looks like an alignment problem

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Old 12-25-2020, 09:12 PM   #9
SkinnyG
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Re: Steering suddenly hard right - What????

Snapped flush with the thick round flat washer. Not sure what caused it.

I assembled this front end six years ago and haven't touched it since. Clearly I screwed up somehow?
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1961 Apache: "Grabber Orange" Shortboxed, pancake, step-notch, air-ride, boosted-LS
1977 Silverado: Shortboxed & dropped, potato-potato
V8 Pontiac Firefly (Chevy Sprint): The ultimate engine swap: 5.7L in a 1.0L bag
Lotus Super 7 Replica: Scratch-built street-legal rollerskate
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