2002 Nissan Sentra Maintenance

Sonic, I looked at the Nissan scheduled maintenance for your Sentra.. You should be fine on spark plugs until 100K miles. If you do decide to replace them earlier, be sure to replace with the OEM recommended plug... hope this helps.. Best of Luck!!

Things to have inspected..... Belts, air/cabin filters, pcv/evap/canister valves, brake/steering/trans/diff fluids, coolant, spark plugs (if not done around 90K)... I would check for any oil leaks or any seals that looks like they are corroding and may start to leak soon. Lastly, make sure the timing belt/chain has been replaced! If timing belts start to wear and snap, most likely you will have internal engine failure and damage..... If you can get through all this to make sure everything looks good, you will be in great shape... Then just keep up with it! Hope this helps.

A lot can happen by 90k miles.
CV joints need to be cleaned and relubricated, timing belts need changing, brakes usually need to be replaced, fan belts need to be checked, water pumps need checking, etc.
Normally you figure you are almost half way through the life of the car, so almost anything could need work. You need to check long term effects, like transmission and differential fluid levels, etc.

But no, there is no reason to go to a dealer.
Any mechanic will know what to do and can easily do it with good parts.

It should be done, usually around 30,000 miles or 24 months, whitchever comes first. Shop around, $120, I think is a little high.

The timing chain doesn't really have a maintenance period. They don't have a habit of breaking or stretching. Timing belts on some vehicles do have a recomended replacement period. Locate your local NTB, Firestone, or Sears for the maintenance schedule.

change the fluid and clean filter every 15000miles, oil change is every 3000 miles and tuneups are usually every 100000 miles. air filter is done every 30000 miles.
feul filter every 30000 miles as well.

Hello;
What are the codes from the DTC? That will help to pin point where the problem lies. The fuel filter could also be heavily plugged.
Thanks;
Rich
RPM Northwest

Hello hecri, my name is JShreader. Thank You for asking your question here at fixya.com

Below is the Maintenance Schedule for 82k-90k. It is the 90k Schedule you need to be more concerned about (granted the maintenance has been kept up by you or previous owners).

This Engine is Chain Driven, so there is no need to worry about a Timing Belt. Timing Chains are designed to last the life of the Engine. As well as the listed items, personally on the 90k visit, I would go ahead check the Ball Joints and Suspension Components. These tend to wear around the 90-95k mile mark.
I hope this helps you. If you have any more questions please don't hesitate to ask. Thanks, JShreader!

I hope that the timing belt has been replaced or you are living on borrowed time.

I own this car, and I can say confidently that it has a timing chain instead of a belt. I believe you do not need to change the chain at any point...... it is more a matter of maintenance and repair to worn guides and tensioners.