Odd sensation on acceleration from full stop

mountie · Aug 26, 2019

( My 2 cents)...... My great / old '88 C2500 was great... I put it on a lift.... I was astonished how easy it was to find loose steering / suspension issues. ( I rebuilt everything )

Put it up in the air. You can easily find problems, by checking the movement, due to everything hanging 'loose' , and other mounts / bushings, etc, can be easily checked.

SRQYukon · Aug 27, 2019

I'm with Mountie. The best way to find anything related to suspension noise is up on a lift. With the ignition unlocked (so the wheels will move) have someone grab a front tire and move it back and forth while you look underneath. That will show worn tie-rod ends, idler or pitman arms. While its in the air you can inspect struts, universals, half-shafts, etc. If all looks good, then its probably internal.

mountie · Aug 27, 2019

I have seen mechanics use a long thin pry bar to see any slight shifting of joints.

Then make a list $$ ..... Works everytime

jyi786 · Aug 29, 2019

Update: took it into the shop. Had the most experienced tech take a look.

The front differential bushings are perfectly fine. What is shot?

The motor mounts.

Funny thing is that I did the motor mount test in my driveway, and didn't think I saw much engine movement. But when he did it? It looked like the engine moved way more than I thought. I don't know why I didn't see it. He also explained that's why I feel the thump/lurch when accelerating, and why I'm hearing the clanking noise randomly.

I've set an appointment to get the pinion seal and both motor mounts changed Tuesday.

avalonandl · Aug 29, 2019

I think mine is a worn u-joint.

mountie · Aug 29, 2019

Having your truck up on a lift allows a better view to see movement.

PG01 · Aug 29, 2019

mountie said:
Having your truck up on a lift allows a better view to see movement.

Meh, peep through bottom of windshield and youll see that motor move....

mountie · Aug 29, 2019

Galante said:
Meh, peep through bottom of windshield and youll see that motor move....

Yea..... You are right.......

Up on a lift will allow you to actually see if one or both are bad..... ( plus you can wipe off stuff to keep the bottom pretty )

PG01 · Aug 29, 2019

mountie said:
Yea..... You are right.......

Up on a lift will allow you to actually see if one or both are bad..... ( plus you can wipe off stuff to keep the bottom pretty )

If it ain’t leakin oil it ain’t a GM.... wait.... i mean harley..... meh....whatever

mountie · Aug 29, 2019

Galante said:
If it ain’t leakin oil it ain’t a GM.... wait.... i mean harley..... meh....whatever

Triumph.......

Odd sensation on acceleration from full stop

mountie

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