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-   -   Strange acceleration issue - any ideas before I go to the dealership? (http://www.the370z.com/nissan-370z-general-discussions/31804-strange-acceleration-issue-any-ideas-before-i-go-dealership.html)

Vegitto-kun 02-17-2011 09:04 AM

this happens with my AT too.

if I suddenly stomp on the throttle in 4th or 5th it revs about 500 higher stays there for a second not accelerating and then the revs drop back down and it starts accelerating.

mostly happens around 2000-3000 revs

daisuke149 02-17-2011 09:13 AM

actually to test if the clutch is beginning to slip, testing in higher gears is better.

my old clutch i could drive around low gears fnie, but I could not go full throttle in 5th gear (highest gear for that car) it would slip.

So, yes i would definitely say its the clutch.

also wearable items are covered for 12k miles under warranty against defects, not against wear though.

dmhenderson 02-17-2011 09:54 AM

I'm going to claim it has never worked properly (probably won't fly but worth a shot). About to leave for the dealership. Wish me luck.

dmhenderson 02-17-2011 11:58 AM

Verdict: Took it to a guy I know who worked for Altered Atmosphere and now works for a dealership. After a 20 minute test drive, he told me there's nothing wrong with the car. The tach was only spinning to about 5k before it grabbed. He said this is normal behavior that is regulated by the computer.

Told me if he was wrong, they'd definitely cover it under warranty and to call if the car got "squirrely".

Had other things to do with my tax refund anyway - w00t

spearfish25 02-17-2011 12:01 PM

^WTF?

If I'm in 5th or 6th gear and floor it, the car surges forward at the same time as the RPM starts to rise. If your RPM jumps and the car has a delayed surge forward, you have a problem. There is no computer interaction happening there. If the revs went to 5k rpm in 5th gear and there was no slipping in the drive-line, you'd be doing over 130mph.

Red__Zed 02-17-2011 12:02 PM

Quote:

Originally Posted by spearfish25 (Post 945683)
^WTF?

If I'm in 5th or 6th gear and floor it, the car surges forward at the same time as the RPM starts to rise. If your RPM jumps and the car has a delayed surge forward, you have a problem. There is no computer interaction happening there.

:iagree:

dmhenderson 02-17-2011 12:22 PM

If it gets worse, I'll take it back. At least I have a shot at getting it fixed for free this way.

dmhenderson 02-17-2011 12:25 PM

I should mention it's not "lurching" - it just revs for a second and grabs. I dunno, I may have been overreacting.

Lug 02-17-2011 01:34 PM

Quote:

Originally Posted by dmhenderson (Post 945676)
The tach was only spinning to about 5k before it grabbed. He said this is normal behavior that is regulated by the computer.

.....utter horseshit. The computer "regulates" a clutch to not engage for a moment? Why on earth would they even want to do that?

Cheech 02-17-2011 02:18 PM

There's lots of help and speculation on these replies. It might help to post a short youtube video of your speedo & tach (with radio off, so we can hear the engine).

my 2cents.....

houkouonchi 02-17-2011 02:24 PM

:iagree:

Yes a video is needed to help us know for sure what is going on =)

Quote:

Originally Posted by dmhenderson (Post 945676)
Verdict: Took it to a guy I know who worked for Altered Atmosphere and now works for a dealership. After a 20 minute test drive, he told me there's nothing wrong with the car. The tach was only spinning to about 5k before it grabbed. He said this is normal behavior that is regulated by the computer.

Told me if he was wrong, they'd definitely cover it under warranty and to call if the car got "squirrely".

Had other things to do with my tax refund anyway - w00t

Um.. I would suggest not having him ever do anything on your car as he sounds like he doesn't know what he is talking about unless you aren't issue isn't what it sounds like you are describing to us.

kenchan 02-17-2011 02:24 PM

Quote:

Originally Posted by Triple's (Post 944932)
Only 9k is irrelevant! People have smoke their clutch in a couple hundred miles.
If it's the clutch? Warranty may not cover it as it's a wear and tear item. Good Luck :tiphat:

This.

daisuke149 02-17-2011 02:35 PM

it def doesnt hang for a second before "catching" unless your foot is on the clutch...

dmhenderson 02-17-2011 08:44 PM

yeah I'll try to take a video. Thanks for all the help.

cheshirecat 02-17-2011 10:39 PM

Note to self: Don't go to Altered Atmosphere for tech help


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