Tonight I reallized that my car was making a strange sound. If i got up to say 3,000rpms in second gear and let it decelerate down it would start making a strange rattling type of sound at about 2300 rpms down to about 1800. Any suggestions on what could be causing this? It's also been "shuttering" a little with the 2-3 and 3-4 shifts under like 3/4 throttle... Any input would be greatly appreciated

 

come on guys I know some of you auto tranny guys can shed some light on this...

 

bump

 

I just drove to school this morning and the sound seems to be coming from the rear and it only seems to do it when the transmission/car is warmed up (after about 10 minutes of driving)

 

have you changed the rear diff fluid? how many miles on the car?

 

Since the 5AT is speced for a MAXIMIUM of 333 lb/ft on input shaft, it appears you might be exceeding this with turbo...............change ATF frequently to defer the funeral.

 

I haven't changed the diff fluid. 37,000 miles on the car 2500 FI miles (many of them highway)

 

There's plenty of folks on here running a lot more power than me with a 5at though and i don't hear of to many problems with them. At least not as many as the 6MT's

 

I think you were supposed to change it at 30k. Many change earlier (and it's well worth it). Wait till you see what comes out... Put in some amsoil or redline and see if the noise goes away. Hopefully nothing is broken...

 

thanks for the advice.... sorry for the dumb question but Diff Fluid is different from the tranny fluid right?

 

yes, the rear diff connects the driveshaft to the rear axles.

there is a great DIY guide either here or on G35driver. It is very easy to do if you have the right tools (the tools are cheap too). 20 mins on jackstands. remember to replace the crush washer (some people just reuse the old one, but you can order it online from some of the nissan sponsors on this site - the part # is in the DIY)

and flushing the tranny fluid (dealership needs to do this as they have a special machine to pump fluid in/out) is a good precaution as well. the recommendation is every 2 yrs for that. or a drain and refill every year.

 

Q45tech: in your experience will putting on an aftermarket magnetic tranny filter extend tranny life - just wondering why a filter does not come standard/OEM - since it's the metal shavings and debris that accumulate with wear and tear that can block passages and result in failure.

 

Could be that Level 10 VB job.

 

don't have the level ten doucshe

 

You're the douche who kept telling everyone that you were getting it and couldn't cancel it even though we all told you that you were an idiot. Get your damn story straight.

 

You can use 2 quarts of Redline MT-90 in your diff. Good stuff and doesn't smell as bad as some of the other stuff out there.

 

Weird, I definitely didn't post in this thread and some how there is a post in here.

 

well I took it to the shop and it seems to be nothing but the intake shield vibrating at that particular rpm range. Guess i freaked out about nothing. Oh well better safe than sorry

 

I hate your avatar.

 

giggidy