Why is my RPM so high?!

buckhuntersj · Jun 23rd, 2006, 02:12 PM

HEY guys,
When i first buy my frontier, the RPM was somewhat normal reaching about 3-3.5, never able to hit 4.5-5.
But now after about 75k miles the RPM easily reachs 4-5!!
I still drive normaly, i dont puch it to hard at all.
What can be the problem?
How can i fix it?
What can i buy to take te strain off the engine?

Thanks,
Buckhuntersj

avenger · Jun 23rd, 2006, 02:47 PM

there isnt a problem, it is just how the transmission shifts.

you can check you transmission fluid level just to be safe.

Is the engine holding at 4-5k rpm? or is this just under acceleration? also, how fast are you going.

buckhuntersj · Jun 24th, 2006, 12:01 AM

well at acceleration it hits 4.5-5rpm
but it holds at about 3-3.5rpm
but could there there be anything other than the fluid causing this?

jerryp58 · Jun 24th, 2006, 07:13 AM

Quote:

Originally Posted by buckhuntersj

HEY guys,
When i first buy my frontier, the RPM was somewhat normal reaching about 3-3.5, never able to hit 4.5-5.
But now after about 75k miles the RPM easily reachs 4-5!!
I still drive normaly, i dont puch it to hard at all.
What can be the problem?
How can i fix it?
What can i buy to take te strain off the engine?

Thanks,
Buckhuntersj

Maybe I missed it, but is this a manual or an automatic transmission?

If it's manual, the clutch could be slipping.
Do the automatics use vacuum these days? If so, maybe a vacuum leak somewhere?

msubullyfan · Jun 24th, 2006, 08:29 AM

Quote:

Originally Posted by jerryp58

Maybe I missed it, but is this a manual or an automatic transmission?

I think he's got an ATX. From the comment "never reaches 4.5-5", I would assume he means that under normal acceleration, the transmission is shifting at higer RPM than it used to.

Do the '04s learn shift points by driver habits? If so, resetting the computer may help out.

buckhuntersj · Jun 24th, 2006, 10:55 AM

It a 2002 automatic frontier.
and msubullyfan is right under normal acceleration, the transmission is shifting at higer RPM than it used to.

Danmuzicman · Jun 24th, 2006, 11:28 PM

could of just been broken in or the ecu is adjusting for your driving style.

buckhuntersj · Sep 2nd, 2006, 12:58 AM

What do you all think about the replacable perfomance ECU's, like the one from Jet Chip?
Do you think there worth the money?

CT_Nismo · Sep 2nd, 2006, 07:32 PM

I do not think the ECU can learn enough to move a shift point 1,000 RPM. Something abnormal is causing the ATX to not shift at normal (for the load) RPMs. Did you do anything to the tranny recently such as change the fluid?

Z_Rated · Sep 2nd, 2006, 08:16 PM

Quote:

Originally Posted by buckhuntersj

What do you all think about the replacable perfomance ECU's, like the one from Jet Chip?
Do you think there worth the money?

I wouldn't use a JET chip in my Nissans, but that's just me.

buckhuntersj · Sep 5th, 2006, 12:56 AM

Quote:

Originally Posted by CT_Nismo

I do not think the ECU can learn enough to move a shift point 1,000 RPM. Something abnormal is causing the ATX to not shift at normal (for the load) RPMs. Did you do anything to the tranny recently such as change the fluid?

no, i havent done anything to it

dvdswanson · Sep 5th, 2006, 05:07 PM

Have you done a tranny service?