MY 2003 NISSAN ALTIMA SE MAKES A CLINK NOISE WHEN ACCELERATING AT ABOUT 1700 RPM AND 2500 RPM OR GOING UPHILL ,NO NOISE WHEN REV UP OR IDLE OR TAKING OFF FAST

ANSWERS: Oil Loss, Buzzing Noise, ETC. - Nissan Forum ' Nissan Forums

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Buzzing noise at 2000-3000 RPM - Nissan Forums : Nissan Forum

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Wheels, brake binding, prop-shaft universals, half shafts, and loose wheel nuts.

It sounds like you have a problem with the AWU. Accelerator Working Unit, a fancy term for the gas petal. If it is not getting the proper voltage to the ECM it will default to a RPM like you are geting, 2000-2500 rpm. Find one from a junkyard and try it out. I would not shake anything that will just cause other issues.

Do you have a check engine light on?

Does the fuel gauge work properly? Recently had to have fuel sender unit replaced and Nissan dealership service to reset the idle learn on 03 Sentra SE-R Spec V. Engine idle rpm would go up and down as a result of bad sender.

It should be around 2000 RPMs. Sounds like it's not going into overdrive. Probally an enternal problem.

yes turn down too around 900

i had a similar problem a few months ago with my se-r. i went to the dealership and had them reprogram the ecm and it fixed it(its on the recall list for your car.) once i did that everything ran great.

When you put your A/C on, there is Vacum Motor or Solonoide, that increases RPM of the Engine to compensate the load of an A/C. If the vacum hose is leaking or raptured the RPM of Engine remain low and Engine Shakes. When you put the A/C on and the RPM of Engine Increases, but a little, then your Selonoide is working but not adjusted properly, so adjust it for the proper RPM of the Engine. Put all the loads on, I mean Head Lights and A/C on and then ajust the RPM.

OK is around 2000 rpm cruising at 60mph (slightly more uphill) You should be at about 1700 going slower in high gear around town.
What you don't want to see is a "flair" when shifting, or rpm above 2500 at cruising speed except uphill. There are many things that influence rpm while driving...road conditions, uphill, downhill, tire size etc. but these numbers are a good "ballpark" reference. Your own experience with your car is the best baseline. If rpm is different than what you have gotten used to as "normal" you should have it checked out.