What did I do (right)?

Status
Not open for further replies.
Joined
Sep 12, 2012
Messages
1,984
Location
Greatest Earth on Show, UT
While I had the tools out to change the spark plugs on the GP, I decided to try and diagnose a steering/suspension issue I have had since first buying the car: clunking/popping felt through the steering wheel when making slow speed right-hand turns and when bearing slightly right while at speed, such as when changing lanes on the freeway.

Based on some poking around I did online, I assumed it would be a bad wheel hub/bearing assembly or tie rod end on the front driver's side. I got the front end up on jack stands, removed both wheels and had the wife turn the steering wheel far right and left while checking out the tie rod end movement; no problem there. Next, I let the wife go back inside and I then pulled the driver's side brake caliper, but couldn't make the caliper bracket bolts budge, so I hand tightened two lug nuts to hold the brake rotor against the wheel hub (with caliper still off) and tried to wiggle it to feel for excessive play. Well, there was no play. I also turned the rotor by hand and it turned the same as the three week old bearing on the passenger side; no grinding feeling like on the bad bearing that had been replaced.

I decided at that point to give up and have my mechanic give a professional diagnosis later in the week. So the caliper and the wheels went back on. I snugged up the lugnuts by hand with a six inch rachet because I was too dirty and lazy to track down the torque specs online.

Took her for a test drive (primarily for the spark plugs) and the issue was gone! No clunk/pop at low speed or high, but a slight "catch" when first accelerating (can't think of a better description, but it's like the brakes don't fully release at first), which it has always done.

Any thought on what happened?
 
Last edited:
Originally Posted By: NMBurb02

Took her for a test drive (primarily for the spark plugs) and the issue was gone! No clunk/pop at low speed or high, but a slight "catch" when first accelerating (can't think of a better description, but it's like the brakes don't fully release at first), which it has always done.

Any thought on what happened?


Congrats! Sometimes the best answers are found by accident. I had a similar situation on my 97 Escort that only tape on the caliper bolts would fix. Aside from that the car was tight and rattle free.

In regards to the "sticking" I'd say sticky caliper sliders.
 
I think you got lucky. You're not done yet though. I'll bet you need a new intermediate steering shaft. All GM's made in the last 10 years eventually need one.
 
You could have a rubber bushing that took a set, removing all the weight from the front end temporarily shifted it and tightened it up... for now...

It could also still be your tie rod end, the inner tie rod has a bit of a circular motion which you messed with when it was in the air. It doesn't matter much and moves back and forth, you got the rod end on a tighter part of its interface. Also ball joints and TREs should be, if possible, checked at ride height like on alignment turntables and not unnaturally "in the air".

Just conjecture.
 
The original problem clunking felt through the steering wheel is most likely the intermediate steering shaft. Didn't you ask about this a few days ago?

You probably didn't fix anything permanently. You may have exercised the grease in the shaft when you had the steering wheel turned back and forth while inspecting the suspension. I bet the clunk will come back.
 
Originally Posted By: mechanicx
The original problem clunking felt through the steering wheel is most likely the intermediate steering shaft. Didn't you ask about this a few days ago?

You probably didn't fix anything permanently. You may have exercised the grease in the shaft when you had the steering wheel turned back and forth while inspecting the suspension. I bet the clunk will come back.


The reason I suspected something in the front driver's side is that it only happens when I turn right and therefore the weight is shifting to the left.

Same car, different problem (first issue fixed with new tires), similar suspect part (also thought it could be tie rod end this time), more research this time around, three weeks apart.
 
Last edited:
Originally Posted By: Miller88
If the steering shafts weren't a concern on GM cars, I'd point to a lose wheel.

Unloaded, during a turn is when they make noise.

"They" being steering shafts? And what do you mean by "unloaded"? I'm still fairly clueless when it comes to steering and suspension system operations, so some of the terminology goes over my head.
 
Originally Posted By: Miller88
If the steering shafts weren't a concern on GM cars, I'd point to a lose wheel.

Unloaded, during a turn is when they make noise.


Of course if he's got a tire pull to the right it would be loaded in a straight line and unloaded turning right.
 
Originally Posted By: NMBurb02

Took her for a test drive (primarily for the spark plugs) and the issue was gone! No clunk/pop at low speed or high, but a slight "catch" when first accelerating (can't think of a better description, but it's like the brakes don't fully release at first), which it has always done.

Any thought on what happened?


That could be from the broken motor mount.
 
Originally Posted By: yonyon
Originally Posted By: NMBurb02

Took her for a test drive (primarily for the spark plugs) and the issue was gone! No clunk/pop at low speed or high, but a slight "catch" when first accelerating (can't think of a better description, but it's like the brakes don't fully release at first), which it has always done.

Any thought on what happened?


That could be from the broken motor mount.

There isn't a broken motor mount, as far as I know, but I'll check it out...sometime (not a lot of free time with three kids and a pregnant wife).
 
Diagnosed today by my mechanic as a bad intermediate steering shaft (clunk) and motor mount ("catch", which was actually more of a clunk that was not felt).

If only I had listened to the fine folks at BITOG, I could have saved myself $44 in diagnostic fees.

I can't find any instructions in my Chilton 2006 GM Mechanical Service Manual (only $8 on Amazon for a used library version - couldn't pass it up!) for replacing the steering shaft. Mechanic said it's only about 1 hour of labor. Is it a simple swap of the old part and new? Anything I should know/be concerned about?

As far as the motor mount, it looks lime I have to use an engine support fixture and remove the lower engine support frame. Is that something a novice could tackle or should I let my mechanic handle it for ~$350 (parts and labor)?
 
Last edited:
Originally Posted By: NMBurb02
Diagnosed today by my mechanic as a bad intermediate steering shaft (clunk) and motor mount ("catch", which was actually more of a clunk that was not felt).

If only I had listened to the fine folks at BITOG, I could have saved myself $44 in diagnostic fees.
Yep, another GM fiasco that plagued many models of their lineup. Should have been a recall. There were 3-4 revisions then they decided to just tell the techs to lube it and jerk it up and down (no joke) and reinstall. Lame.
 
Status
Not open for further replies.
Back
Top Bottom