Turning wheel at standstill with brake applied causes vibration

[Heuster]

This just started after I pulled out of the mech shop...geez. When you turn the wheel at a standstill with the brake applied, the steering wheel vibrates. If you take your foot off the brake, there is no vibration at all. The power steering pump whines a bit, but nothing that I'd worry about. Fluids are good..all this started happening after he "took off the belt" to try and find the chirp I posted about (Camshaft Syncronizer).

In the back of my mind...vacuum hose keeps coming up, but maybe it's just the ps pump deciding to take a dump. But why would the brakes affect the ps pump?

When am I going to have tools, time, and know-how to be able to do these jobs myself. Freakin-a. I'd pay someone a loaf of bread to come to my house and show me how to fix this crap.

Thanks for all your help!

 

[Turdle]

I work for donuts and nothing less!!

This one has me stumped for a suggestion. Is the bearing squeal still present, and does it change while steering?

How about this. When you apply brake at standstill, does the tachometer drop significantly?

 

[Heuster]

Nope - no drop in RPM's - the squeak is still there because the part hasn't been fixed yet. It also does not change when you turn the wheel - don't think it is related.

No one had the Cam Sync so I got it through rockauto for 37.00 so I ordered it and will take it back to him to put it in.

 

[MountaineerGreen]

I suspect it has something to do with the PS rack. Maybe air in the lines? You could do a flush and put in new fluid. Won't cost but $5 tops.

Pull the lines from the cooler under the truck, with the engine off and wheels off the ground, turn the steering wheel lock to lock a few times. Put the hoses back, fill the tank 3/4 full, start the truck, check fluid level again, turn steering wheel lock to lock, add fluid as necessary.

 

[Turdle]

Nope - no drop in RPM's - the squeak is still there because the part hasn't been fixed yet. It also does not change when you turn the wheel - don't think it is related.

No one had the Cam Sync so I got it through rockauto for 37.00 so I ordered it and will take it back to him to put it in.

I might be wrong, but the cam sensor synch drive unit is over 37.00

the camshaft position sensor is about that much money, however, it is attatched to the drive unit. The sensor itself has no moving parts----
This is a confusing part. In the video is the whole unit, toward the end, looking at the top, is the sensor mounted to the drive unit.

 

[Heuster]

I might be wrong, but the cam sensor synch drive unit is over 37.00

the camshaft position sensor is about that much money, however, it is attatched to the drive unit. The sensor itself has no moving parts----
This is a confusing part. In the video is the whole unit, toward the end, looking at the top, is the sensor mounted to the drive unit.

Here is the link @ rockauto - give it a second and it will load the image.

https://www.rockauto.com/dbphp/mak,...FI+%28P%29,Engine,10722,Camshaft+Synchronizer

That's what I ordered. It looks exactly like the part that you were squeeking in your hand. If there is a "sensor" on the top of the "moving" part, I didn't buy that.

 

[Turdle]

By golly, that is it!! Good find!!

 

[Heuster]

I suspect it has something to do with the PS rack. Maybe air in the lines? You could do a flush and put in new fluid. Won't cost but $5 tops.

Pull the lines from the cooler under the truck, with the engine off and wheels off the ground, turn the steering wheel lock to lock a few times. Put the hoses back, fill the tank 3/4 full, start the truck, check fluid level again, turn steering wheel lock to lock, add fluid as necessary.

Where are the PS lines under the truck? Sorry, guess I need to buy a Chiltons.

 

[MountaineerGreen]

In the center of the truck right above and in front of the crossmember is the PS cooler. There are two hoses that connect to a U shaped cooler. These are slip on clamps, you just need pliers to undo them. When you turn the wheel, it will make a mess, you should try to capture the fluid somehow.

You can see it in this pic. Your truck won't look like this underneath, but you get the idea...

 

[jackndelphine]

My wife's 96 X did the same thing with the chattering steering after I changed the inner tie rod end, and it went away after a while, that was about a year ago, whats funny is, I changed the lower ball joint and shocks today on my 97 Sport and as soon as I went on the test drive and turned the wheel, the steering started chattering away, I am figuring that the problem is linked to the fact that I had the wheels off the ground and turned the side to side while working without the engine running, but what I am thinking but not 100% on is, that air is getting sucked into the system when I did that. I guess after a while of driving, the air is worked out of the system, because like I said, my wifes 96 stopped doing it by itself, now I am going to go out tonite with my 97 and if anyone is interested, I will post what happens with that, I am just going to leave it alone and see if it goes away. Jack