A liitle help, please

2137 Views 10 Replies 7 Participants Last post by Clint, Oct 5, 2016

hokihigh

Discussion Starter · Sep 16, 2016

I posted this over in Driveline Discussions and I'm not getting any info so hopefully the change in venue will get me some answers.

I've got a 2007 4x4 NISMO with 120k on her(i've put 2k on it myself), here's the issue.

Went out to a offroad park on Saturday, no wheeling just checking it out, I hit a rut on my way out at about 10mph, bounced my head off the headliner. Driving home I noticed when the truck downshifted, 4th to 3rd, 3rd to 2nd I would get a intermittent thump/clunk. It did this all the way back to work, I tried driving with o/d off and that seemed to help. When I drove home, after the truck cooled of it didn't do it anymore, so I thought the tranny was having a brain fart. I drove to and from work on Monday with clunks, I live 5 miles from work. Tuesday I took the truck to town (12 miles) it started clunking on downshift sometimes, and studdering on upshift. took the truck to dinner last night, it started clucking on the way home. Any ideas on why its doing this and only when hot? The only mod to the truck is I have flashed the ecu with the xs gas saver superchips tune. I currently have it in the shop having the tranny flushed and filled, and getting her checked out underneath making sure I didn't break anything.

Thanks, hoki

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hokihigh

Discussion Starter · #6 · Sep 17, 2016

Thanks for the replies so far. Heres what I have done so far, I did run a can of Seafoam Transtune for 2 days before the flush, then I had it flushed and filled, no change. I have reset the truck to the stock tune, no change. I have added lucas oil transmission fix, still no change. When the truck is cold it shifts great, up and down, no shudder or clunk, but when you drive it 15 miles or so it starts the hard shifts and shudders. I'm thinking valve body or torque converter, no codes throw, I'm stumped.:serious:

Thanks again,
hoki

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hokihigh

Discussion Starter · #10 · Oct 5, 2016

Hey guys, thanks for all of the replies. Turns out it was the valve body, had that replaced last week and I have had a week of glorious clunk/thump free shifting. Total cost of repair $1425.00. Thanks again for y'alls help.

hoki::smile::

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