I have a Nissan almera 2002, I've bought a three

SOURCE: upgrading nissan almera dipped headlights?

I would have the complete headlight circuit checked out by a competent tech before buying more bulbs.

SOURCE: engine codes

These are Canadian DTCs diagnostic trouble codes. This codes mean a lack of connumication. This are different than American OBII codes.Hope this helps try gooling Canadian Troule Code and writing down the U codes. I hope this helps you. Please vote if you find this helpful.

The U1000 and U1001 mean that there is no communication between the engine control unit and another control units that are part of the CAN system (Controller Area Network) or that at some point there was no communication. Before do any repairs with the U1000 and U1001 codes, the factory recommend repairing any other problems in the car.

SOURCE: 2002 nissan xterra l/f seat belt locked up

Try spraying penetrating lubricant or graphite into it, wiggle and try. Spray inside and press the button and spray between the button and the housing. If this dosen't work you can try looking into the seat belt with a flash light and see if you can see anything moving compare with a belt that works properly. If not successful you will have to replace the seat belt assembly as they cannot be taken apart as they are a safety item and are replaced as an assembly.

SOURCE: I HAVE AN Y REG NISSAN ALMERA THAT IS SPLUTTERING

you need a timing chain it has streched will cost £170 for the kit off ebay

SOURCE: replace belts on a 92 nissan 240sx

loosen tensioners using a pry bar or equivalant and loosen tensioners on ac and alternator then tighten when replaceing. work on outside belt off fist and then inside belt off second. then install inside belt first and then outside belt. you will see a grooved hole where the bolt goes through the alternator to reduce tension.