I have a noise coming from the timing chain area. Just had the transmission rebuilt at AAMCO and they said the timing chain is bad, I guess there are three timing chains on this model. It is a 3.5 with approx. 117,000 miles. Is this normal or just bad luck?
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I assume that you have a 6cyl engine, noise came from both worned secondary timing chain tenssioner shoes, just replace those two and while you have them all apart, also replace main tenssioner and guide, then all noises will go away. Good luck!
If it is running loose for a long time and is worn then should be replaced as soon as But if the tensioner has come loose which it shouldn't have then an inspection of the links will further tell you if it should be replaced.There are ways to inspect the timing chain.This is a rough guide.
Timing Chain and Sprockets Cleaning and Inspection
Clean the components with cleaning solvent.
Wear safety glasses in order to avoid eye damage.
Dry the components with compressed air.
Inspect the timing chain for binding or wear.
Inspect the camshaft and crankshaft sprockets for:
Worn teeth (1)
Damaged teeth (2)
Chipped teeth (3)
Worn valleys between the sprocket teeth
Inspect the crankshaft sprocket keyway for wear.
Inspect the crankshaft sprocket oil pump drive splines for wear.
Inspect the chain guide (232) for the following conditions:
Loose metal inserts (1)
Cracking (2) in the chain contact area
Excessive grooves (3) in the chain contact area Grooves 1 mm (0.040 in) or
less in depth are to be considered normal wear.
Just a couple ideas...
Your engine and transmission will shift slightly when in drive, and maybe that movement is allowing it to rub on something. Another issue may be that the noise is actually from the transmission.
Torn motor mounts will allow the drive train to shift or move farther than normal.
Nissan Altima 2003 and up have timing chains and if you have looked for them you're not going to find it unless you take the valve cover off and you will see it on the left side but be thankful for one thing that Nissan guarantees that the timing chain will last the life of the engine which is about 250,000 miles. but as anything mech. it can go out anytime new or old have this checked out soon along with the oil pressure let me know what engine you have and the millage email me and ill do some research for you Lee
Dear Rubbing Noise, The correct and long term repair for this would be to replace the chain and timing chain tensioners.Only saying to replace the chain seeing as how it's been slapping on metal, where it's not supposed to.This will cure your problem and you will be a happy camper, HOPE I COULD HELP!!!
The timing chaing noise is very common on almost all v6 nissan engines. There is a significant difference for the maxima's though.
Timing chain noise is very common and it is the result of the secondary timing chain tensioners. They often stick and put too much tension on the chain and the plastic guides for the tensioner wear down to metal and that is the noise you hear.
At Nissan, I have performed this replacement many times and I suggest you take it to the dealership to have it fixed.