2003 Nissan Xterra Questions

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replaced valve cover gaskets on xterra ---dropped valve cover screw into valve assembly---will it do any damage -if I leave it in there-
I have a 2003 Xterra that has a bent frame, still barely driveable and great mechanical condition. I bought another one and want to pull parts (sensors, window motors, etc) to use on the one I bought, which is not the...
The battery seemed sluggish to start the vehicle in cold weather but it would start. Today,which is much warmer, it started up when I drove home from work. Was about to leave an hour later but vehicle would not start....
I replaced the bulbs but they still do not work. I know where the backup light switch is, but I can not find the backup light fuse
My xterra has started being very particular about when it will start. It starts fine when it is cold, but once the engine is warm, if I turn it off, it will not start again until it cools down. At first, I thought it ...
After an instant overheat & engine shut down my 2003 Nissan Xterra (137K miles) was diagnosed as having blown H2O pump & thermostat that were replaced along with tensioner, belts, radiator hoses & fluids. 4 days later...
leak detected & knocking sensor what does this mean
I have to reach a speed of 45 mph for the ac to blow cool air. if I stop it will get warm again and take time to cool. Is this a defect with the car?
Starts fine any other time. I've tried covering the engine compartment and it still will not start. I see no sign of moisture under the hood. Sometimes it will sputter while turning over and if I pump the throttle, it...
I have everything done down to disconneting the actual fuel pump , but can't figure out how to disconnect it from fuel level sensor. Help !
When check engine light was on I took it to autozone and they told me a knock sensor. Let some mechanics I know look and one guy said exhaust manifold, another said catalynic converter. I have a video of it posted on ...
Has been a great car but needed a new iming chain. I replaced it and now its not getting very much power. what could be the problem? How does it get fixed?