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Old 10-22-2012, 09:41 PM   #1
MAC71
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Tie rod help

I have a 72 C20 Suburban that has a problem driving in a strait line. All of the front and rear suspension and steering components are tight. It has a new gear box, springs, shocks and tires. Also there is no play at all in the steering. It has been aligned by two different shops, but it keeps wondering to the point that it is scary to drive.

I just discovered that the tie rods do not have that 20-30 degree of rotation that they should have, in fact they have no play at all.

So my question is could this cause the tie rods to bind and induce some sort of bump steer??

I wanted to add that all parts are stock, so now lowering spindles or springs.
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Old 10-22-2012, 10:28 PM   #2
da-burb
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Re: Tie rod help

I would hope that someone in one of 2 shops has enough experience to identify bad parts in the front suspension. The first place I would look is the pan hard bar on the rear axle. A bad bushing there will make the truck go different directions. After that look at the bushings in the training arms. The geometry of 1/4" movement there becomes huge 10 1/2 feet up front.
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Old 10-22-2012, 10:43 PM   #3
MAC71
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Re: Tie rod help

da-burb, Thank you for the info, I recently replaced the pan hard bar bushings and also replaced not only the trailing arm bushings, but also the trailing arms due to rust.
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Old 10-22-2012, 10:48 PM   #4
GMCJOE
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Re: Tie rod help

If you can't find any suspension issue between the front and rear, swap your front tires to the rear. See if that corrects your wandering. Could just have a tire issues. My S10 had the same issue, ended up having a bad belt in one the the tires.
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Old 10-22-2012, 11:03 PM   #5
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Re: Tie rod help

Yes the tie rod ends should be on the same plain & rotate some if they are greased. If not you can loosen one clamp & rotate it slightly. This will not effect the alignment. Put the wheels straight ahead. Look at the pitman arm & idler arm. They should be parralel to the length of the truck. The inner tie rods should be in the same relative possition of the frame. Raise the front wheels & hold an awl or ice pick up to a solid tread or the tire with a jack stand. Rotate the wheel so to put a line around the circumference of the tire. Do both tires like that & set the truck back down & roll it & bounce it a little to break the surface tension. With
the wheels straight ahead, Have some one hold a tape on the scribed line in the front of the tire about the center. Measure the distance to the other tire. Go to the rear of the tire & measure the same way. The front should be about 1/8 in. less then the back.
If all this doesn't seam right go back to the alignment shop.
These trucks handle great when they are right. I would reather drive my 70 then either of the new cars we have.
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