I dont know for sure what the noise is that my 04 ford f-150 is making. After it sets for a while and you crank it... it rattles like a dry start. I have had te cam phasers and lifters replaced aprox. 10K miles ago. What could this noise be?

maybe exhaust

If everything works I suggest you don't worry - just make sure it can't rattle around making a noise.

Wiring harnesses are expensive to make and manufacturers find it more economic to make just one harness for a range of cars so it is inevitable some cars with a lower spec will have a number of spare wires, connectors etc.

im a tech. at my family auto shop, me personally am a harley davidson tech. but i own a 2004 4.0L explorer the noise that yours is making is most likely the cam chains.... they are known to stretch and make a noise.... the only down side to that is that you have to remove the engine and disassemble almost the hole engine to replace the chain.... i have 130k on mine and it makes the same noise so ill have to rebuild mine here soon sorry for the bad news

Make sure your getting 12V at the starter (fm batt) & have a good, clean ground from the batt. Good luck

that would be the engine front , you sure it's a Rattle ? if so ? it will be your Camshaft bearing noise, is it a 2.5 L 4 cylinders ?or 3.5 L V 6 !! .
if it's 2.5 L , your Camshaft bearings are starving for oil , so I suggest you check them both intake and exhaust cams and see also if the valve lifters or cam bearings are in bad shape , worn out ? check also both cams journals and drive journals to lifters ( contact operation ) if there is a suspicious gaps between them that also can cause a rattle sound .

if it is a popping sound it could be your sway bar bushings

You have timing chain, tensioner, and cam phaser problems. get out you wallet, its not cheap. Your FORD dealer will know what to do.

dont know the actual settings but if you tighten the bolts until they are snug and then give them a have a turn you will be ok all you want to do is make sure that they dont run themselves out when the engine is running.

Hello windy....There are a few thing on the murano that could cause this... one is the exhaust gussets that go to the bottom of the oil pan to the exhaust, they can crack and cause a rattling noise. Also I have seen the rear exhaust heat shield spot welds come loose and cause a rattling noise, from exhaust manifold down pipe on the cat. converter. I would check them first, also the park brake cable will lose tension and rattle on the undercarriage.
A more serious problem would be the timing chain and/or chain tensioners...these are known to make noise around 50-60k. The tensioners are operated from oil pressure, the face gets worn, the chain stretches and it results in a rattle or a slapping noise
Useing a full synthetic oil with regular maintaince will help prevent premature wear.
Good luck, i hope this helps..please rate me a fixya.

Are you sure that the noise is a rattle? lifters make a ticking noise, pistons, piston pins and bearing rattle, lifter tick goes away in seconds, piston and bearing related noises take longer, and in the case of rod bearing not at all, it sounds like you may have piston noise, and in that case I would not worry about it, I would run a few cans of combustion chamber cleaner with you next 2 fill ups, carbon build up on the the # 1 piston ring land can cause the piston to "rock" in the cylinder and make a rattle type noise. I have a 1996 Corvette that has a rattle, it is a piston, GM checked it and told me not to worry about it, of course that advice cost $50.00. Also this type of noise is common to the later production 3.8L V6. Hope this sets your fears of a large repair bill to rest, just drive it, but make sure you use the correct oil and change it when recommended.