Squealing under hood when wheels turned all the way left

[Suleiman Saadeh]

Exactly what the title says. Video attached. Any help would be appreciated. I've got two vacuum lines that got melted in a engine fire I'm about to replace if that would have anything to do with it. I figured it may be related since the power steering may rely on vacuum.

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[Suleiman Saadeh]

Also my steering wheel seems to rock left to right on it's own if I loosen my grip on the wheel.

 

[chillman88]

Vacuum won't affect steering.

I couldn't hear a squeal in the video. Does the wheel wobble when you're not moving or when you are? If it's wobbling when parked my first guess would be the steering gearbox down on the frame.

 

[Suleiman Saadeh]

It actually stopped wobbling after I hooked two melted vacuum lines up so I dont know. It definitely still squeals when I cut the wheels. I'll get a better video later

 

[Macrobb]

These IDIs have a C2 power steering pump. They like to whine quite a bit, especially if thinner fluid is used.
You are supposed to be using Type F ATF in your PS reservoir, not Power Steering Fluid, which is thinner.

 

[Suleiman Saadeh]

These IDIs have a C2 power steering pump. They like to whine quite a bit, especially if thinner fluid is used.
You are supposed to be using Type F ATF in your PS reservoir, not Power Steering Fluid, which is thinner.

This was something that happened all of a sudden. The fluid hasn't been changed nor had anything added to it. The noise just started out of nowhere.

 

[Macrobb]

Check for tension on your serpentine belt. Possibly replace it with one 1/2" shorter, if it will fit.

 

[lotzagoodstuff]

When you get to the end of your turning limit, you put the power steering pump in full demand as it thinks you are trying to turn thru the steering stop. This demand tells your pump, give me everything you’ve got and typically drives pressure over the relief valve in the steering gear.

The noise you are hearing is strange. Typically this demand can make your belt slip/squeal, and that may be what’s happening but you may also just be taxing some other component (tensioner, pulley, etc), resulting in the noises you are hearing. My bet is the tensioner.

Try this: put a big chalk mark on the smooth side of your belt, have a buddy, friend, spouse, or complete stranger perform the turn left routine in your video while you are watching the white chalk mark. If your highly calibrated eyes (I wear glasses) can pick out a slowing in the chalk mark speed, you may figure out that the belt is slipping.

Good luck and report back your findings.

 

[subway]

the vacuum system and steering system are 2 separate set ups. one works in "vacuum" and the other runs in the 1500 psi range on the high side.

when you turn your wheel all the way to the locked left or right position the pump cant pump any more fluid to the steering box and goes into bypass mode. when you are in bypass mode the pressure spikes until the bypass spring opens internally and bleeds off the high pressure. not a big deal for a short time but you don't want to stay in this mode.

when in bypass mode this is when your pump is working the hardest. check the simple things first. how good is your belt? is the belt tensioned properly? if this happened suddenly i would be less suspicious of the fluid but make sure you have enough in the reservoir.

 

[Suleiman Saadeh]

the vacuum system and steering system are 2 separate set ups. one works in "vacuum" and the other runs in the 1500 psi range on the high side.

when you turn your wheel all the way to the locked left or right position the pump cant pump any more fluid to the steering box and goes into bypass mode. when you are in bypass mode the pressure spikes until the bypass spring opens internally and bleeds off the high pressure. not a big deal for a short time but you don't want to stay in this mode.

when in bypass mode this is when your pump is working the hardest. check the simple things first. how good is your belt? is the belt tensioned properly? if this happened suddenly i would be less suspicious of the fluid but make sure you have enough in the reservoir.

The fluid is not on the dip stick for the power steering pump. The belt is practically brand new with only a couple hundred miles on it.

 

[subway]

fill that thing up! are you sure you don't have a leak?

then start your engine, run a few seconds, shut down and check it again. do this until it is full.

having low fluid and air in the system will make it act weird, fill it up and run it a few miles before you start trouble shooting. having air in the system because the fluid is to low can make it noisy and cause pulsations.