4l60e Thump when put in D/R

[HDN05LParticipant Canberra ACTVS Olympic Edt 383 stroker Ute View build HERE Member since: March 2, 2015 Posts: 289]

Hi guys after some advice.

When i put my vs auto box into drive or reverse it thumps and jumps forward in drive and backward in reverse.

I have checked fluid levels when hot and levels are all good, no burnt smell either.

I have jacked it up and put on stands to see what happens when i put in gear, it seems the wheels want to start spinning straight away.

Any ideas on what i could be checking?

[Slow355Participant Victoriahectic spec 355 vs ss ute View build HERE Member since: March 2, 2015 Posts: 322]

Does it have a shift kit? When my box was set up really aggressive it was like that but thats done with line pressure i think

munch munch ls1s for lunch
Best 1/4 mile 13.1@105mph 60ft-1.8sec Reaction time .8 sec 0/100-4.8sec

[HDN05LParticipant Canberra ACTVS Olympic Edt 383 stroker Ute View build HERE Member since: March 2, 2015 Posts: 289]

Dont think it has a shift kit.

Its not as bad when its been for a run and obviously warmed up a bit.

[VRSenator065Participant Adelaide SAVR Senator LSx454 1960 Kombi (project) 1921 Nash Hot Rod (future project) View build HERE Member since: February 17, 2015 Posts: 5 777]

Might be worth giving some like Grant or Chris a call at Norwood Auto’s?  They are SA though, not sure who’s good where you are.

[HDN05LParticipant Canberra ACTVS Olympic Edt 383 stroker Ute View build HERE Member since: March 2, 2015 Posts: 289]

In canberra Gary. Thanks

[HoopstarParticipant AdelaideVK Calais View build HERE Member since: June 10, 2016 Posts: 48]

Grant’s doing my 4l60e trans for the VK as I type this.  I’ll pose the question to him when I pick it up tomorrow and let you know what he says HDN05L..

Paul

[HDN05LParticipant Canberra ACTVS Olympic Edt 383 stroker Ute View build HERE Member since: March 2, 2015 Posts: 289]

Cheers Paul

Hoopstar wrote:

Grant’s doing my 4l60e trans for the VK as I type this. I’ll pose the question to him when I pick it up tomorrow and let you know what he says HDN05L.. Paul

 

Thanks pual 

[HoopstarParticipant AdelaideVK Calais View build HERE Member since: June 10, 2016 Posts: 48]

I asked Chris from Norwood Automatics the question – he said it could be a jammed piston, broken piston spring or something caught in a ball check-valve…  Basically there isn’t one thing to look at.

In other news, I picked up my trans from the boys who once again looked after me – great price, great quality and great guys.  Pick up my converter next week too

For your trans, I think you’re going to need to get it into a trans shop so they can drop the pan off and take a look.

• This reply was modified 8 years ago by  Hoopstar.

[HDN05LParticipant Canberra ACTVS Olympic Edt 383 stroker Ute View build HERE Member since: March 2, 2015 Posts: 289]

Cheers Paul i think you might be right. Appreciate you looking into this.

[ImmortalityParticipant 97 HSV Senator 185i 02 VX L67 Calais View build HERE Member since: August 31, 2015 Posts: 535]

How old is the fluid? Just because it doesn’t smell burnt doesn’t mean it isn’t past due for a change.  Good fluid is pink in colour, by the time it’s a deep red colour it’s getting to the end of it’s service life.

Last time I had a transmission fully serviced (full flush fluid change) it was much smoother afterwards.

Play in the diff can also seem like a transmission issue, our old VS had a well worn single spinner that would thump bigtime in the mornings when going into reverse.

• This reply was modified 8 years ago by  Immortality.

[gtrboyyParticipant gtrboyy1.6 Getz View build HERE Member since: January 20, 2016 Posts: 201]

Check easy things to rule out first like engine mounts,trans mount,t/shaft uni & centre bearing then backlash of diff..all those can cause clunk.

 

After that start looking into auto…service can help if it hasnt been done in ages.

If it is inside the auto could be anything but hopefully a simple fix.

[VRSenator065Participant Adelaide SAVR Senator LSx454 1960 Kombi (project) 1921 Nash Hot Rod (future project) View build HERE Member since: February 17, 2015 Posts: 5 777]

Hoopstar wrote:

I asked Chris from Norwood Automatics the question ….great price, great quality and great guys. 

+1 for that, highly recommend to anyone in SA.  They build a pretty stout glide too

[TUFGMHParticipant SydneyVH SL/E & VK Calais LS1 View build HERE Member since: March 2, 2015 Posts: 96]

Have idle revs increased? A dirty TPS or similar could have brought revs up enough to be over a soft gear selection.

[HDN05LParticipant Canberra ACTVS Olympic Edt 383 stroker Ute View build HERE Member since: March 2, 2015 Posts: 289]

<p style=”text-align: left;”>Will get the car back this weekend and start going over the tune and checking all these suggestions. Thanks for the advice guys.</p>

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