Timing chain/belt on 2006 6 cyl - should replace? - Nissan Frontier Forum
 
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#1 (permalink) Old 05-10-2011, 10:11 PM
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Timing chain/belt on 2006 6 cyl - should replace?

Just wondering, I don't have the manual with recommended replacements. Couldn't really see anything online either.

I have about 88k miles on my 2006 Frontier SE 6cyl. Is it recommended to have the timing belt/chain replaced at this point? My father is under the impression that if that goes, it can ruin the engine and apparently the Frontier had issues with this in the past?

What other recommended replacements should one have at this mileage?

At the garage, they recommend hundreds/thousands of dollars for recommended replacements of which I always decline.

To date, I've just changed the brakes and oil and recently flushed and replaced the coolant for the first time.
At the garage, at around 50k I had the driveshaft and UV joint replaced under warranty. Just recently at about 85k I had another UV joint replaced out of warranty.

I also noticed a loud whining noise inside the engine, near the serpentine belt. It would disappear and come back until it finally appeared again and held on for weeks constantly. Of course, when I took it to the garage, that very day it stopped and has never return.

When I first bought the truck, I noticed for the first 10k miles I had a whine sound that sounded belt like when it was really cold out. Garage never found anything. Wondering if it's the same thing.

Any advice would be appreciated. I would like to keep this truck for a long time but also don't want to be replacing parts/ spending money without need.
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#2 (permalink) Old 05-10-2011, 10:20 PM
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the v6 engine in 2nd gen frontiers is a timing chain engine, not a belt. typically the timing belts need to be replaced around 100k miles in most cars, but not the chains. in theory it should last the life of the vehicle... in theory. some motors are "zero tolerance" engines which means if the timing gear were to stop (or break) the pistons will contact the valves which can ruin an engine, maybe that's what your dad was talking about?

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#3 (permalink) Old 05-10-2011, 10:25 PM
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sounds like your chain guides are worn.
I think Im starting to get that on my gen2 X also.
Like HKY said, chains are good for life, just the early chains chewed up the guides.

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#4 (permalink) Old 05-10-2011, 10:40 PM
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You might want to replace the water pump while your in their.

06 MAJESTIC BLUE 4X2 LE KC
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#5 (permalink) Old 05-11-2011, 12:24 AM
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Quote:
Originally Posted by Frontier2 View Post
You might want to replace the water pump while your in their.
+1, it's not much more to do it if you are already in there (water pumps are driven by the timing chain, not the serpentine belt, so they are inside the timing chain cover)

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#6 (permalink) Old 08-05-2011, 02:34 PM
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so im at 103K with no noises except start up rattling noise people have talked about should i replace the secondary chains and ware pads or just change all the chain ware pads?
thanks
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#7 (permalink) Old 08-08-2011, 11:26 AM
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Quote:
Originally Posted by HKYStormFront View Post
+1, it's not much more to do it if you are already in there (water pumps are driven by the timing chain, not the serpentine belt, so they are inside the timing chain cover)
forgot about this thread but i should note that our water pump IS actually on the front accessories, not driven by the chain like all the other VQ's out there. not sure why but that's our trucks

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#8 (permalink) Old 08-08-2011, 01:35 PM
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I just wanted to add that Sincraft's father was right about the timing "belt" issue. I had a '93 with the 3.0 liter V6. In those days they DID have timing belts. At 60K miles, the recommended service interval, I took mine in to the dealer and it cost $700 to have the belt replaced (remember that this is when $700 was worth more than it is today!). I believe because of the cost of replacing belts and customers complaining or worse a belt would break and ruin an engine, they went back to chains and I am very happy that they did.
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#9 (permalink) Old 08-08-2011, 02:58 PM
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Just to clarify some info.

The VQ40 is an interference motor. This means that if/when the chain breaks, the pistons will impact the valves.

The VG30 and VG33 had belts. The VQ40 has a chain.

If you are replacing any part of the chain on your own dime, replace them all including guides. Replace the water pump and then see if there is anything else that is in there. This will save you labor charges down the line.

To check if the whine is internal or external, remove serp belt and give it a few revs. If you still hear the whine, then it is internal and most likely the chain/tensioners.

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#10 (permalink) Old 08-08-2011, 07:52 PM
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Quote:
Originally Posted by sincraft View Post


When I first bought the truck, I noticed for the first 10k miles I had a whine sound that sounded belt like when it was really cold out. Garage never found anything. Wondering if it's the same thing.
That sounds like the belt tensioner, nothing to really be concerned about but it is annoying. LOTS of people including myself have this problem for a minute or so when its cold out

2006 Frontier black CC 2wd,6 speed, black UWS toolbox, 20% tint, Rough Country 2.5" lift, Bilstein 5100's
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