Last post on Jul 03, 2013 at 4:34 PM
You are in the Nissan Altima
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Nissan Altima, Engine, Sedan
#65 of 119 Re: 2008 Altima 2.5L engine rattle when cold [warthog10]
Feb 21, 2009 (10:20 am)
I posted a message here regarding the similiar problem with the 2007 Altima 2.5 S. After three visits to my Nissan dealer over a 8 month period, they finally agreed that something was wrong. Here is the stange part. Based on advise from the Nissan tech line, they replaced my engine (new), but up to this day, they remain elusive about what the problem was. I'm still concerned that my new engine will develop the the same noise problem.
I suggest that you keep pressing Nissan. The 2.5 S engine has problems...
#66 of 119 Re: 2008 Altima 2.5L engine rattle when cold [warthog10]
Feb 21, 2009 (6:50 pm)
Well where should i start i had a 2008 altima and i now drive 2008 malibu and love it. my altima stayed in the shop more times than i can count.. mine sounded like a tractor when it was cold. it was the heat shield; we had four new ones put on did not stop the problem!!! they would not put another motor in for us. they could not fix the problem but kept giving us a run around. we filed a complaint with the better
business bureau guess what they said------------- because the car was still drive able
they would not do anything i had 3 mechanics look at mine and said it was internal in the engine!! got tired of missing work trying to deal with mine so i traded it off i have had my malibu 5 months and i have not had a problem. i wish you lots of luck
#67 of 119 Nissan 2.5L engine engine clatter cold start
Feb 21, 2009 (8:57 pm)
I have the same problem in my 2003 2.5L Altima. Of course mine in out of warranty so I have not brought it in to be looked at as of yet. Iíve been doing some research before I do that. I have read many posts on this and have a little automotive knowledge. First off I know without a doubt it is not the heat shields. Nissan must have idiots for mechanics because if you listen to the engine you can clearly tell that itís the valve train and not a rattle from a loose shield. In some vehicles this can be the case but I have read post after post of people having these shields replaced and the sound is still there. What does Nissan do? They change them again and end up with the same result. My engine makes the sound only when the engine is cold and goes away when the engine is at normal temperature. In the summer, I hardly ever hear the noise after the engine has had a cold soak (sitting over night). Now in the winter when itís cold out is when I hear this noise at its worse. Another interesting find is that the noise is only when the engine is under load. At idle itís very quiet and you can even rev it up without hearing the clatter. A heat shield would rattle if it were lose regardless if the engine was idling or under load. The theory is that once the exhaust heats up the shield expands and becomes snugger eliminating the noise.
I have a 5spd and soon as you put it in gear and start to accelerate I can hear the noise and like I said, it sounds exactly like an engine with no lubrication to the camshaft and valve train. I changed my oil filter to a high grade filter thinking perhaps the oil filter bypass valve was not functioning and was starving the engine for oil at cold temps. This makes perfect sense. Oil filters have a oil bypass valve in them because when itís cold out the oil is very thick and too thick to push through the filter medium. So when the engine is cold, the pressure from the oil not getting through the filter medium causes the bypass valve to open and allow oil to circulate throughout the engine. When the engine gets warm and the oil gets thinner, the pressure will drop and the bypass valve in the filter will close. Then the valve shuts and the oil is able to begin going through the filter medium. I also used thinner oil to help in cold weather and that and the filter change did not resolve the noise.
So this brings me back to the valve train. Nissans have what is called a ďcam timing solenoidĒ. This is a valve that controls the cam shaft timing sprocket, it changes the oil pressure to the sprocket for cam timing, and if it loses pressure it will cause the sprocket to rattle. It seems to be a problem when the engine is cold. I have come to the conclusion that this has to be the problem.
#68 of 119 Re: 2008 Altima 2.5L engine rattle when cold [2007altima]
Feb 28, 2009 (11:45 am)
This is factory defect!
EVERYBODY must fill complain at BBB.org
I donít know how many complains needed to issue recall.
I hope we will get it soon!
#69 of 119 ENGINE PUTTERING OR RATTLE OR W/E YOU WANNA CALL IT
Mar 16, 2009 (6:08 pm)
I was very happy to see this thread and find that I am not alone.
I purchased a 2009 Nissan Altima 2.5 S on March 6th at 31 miles on the odometer. I have noticed a slight puttering noise when the car is idle. I am not sure if the noise is loud enough to be classified as a 'rattle,' but I do know that the engine does not sound clean. I know what a new engine is supposed to sound like and this one definitely sounds like it needs an oil change or something.
I have made an appointment with my local Nissan dealer, Corona Nissan, and I will be taking the car in tomorrow at 9am. I am very cautious and nervous about my purchase now and hope to update this site soon.
If anyone else is experiencing any engine problems with the brand new 2009 Altima's please respond. THanks
#70 of 119 Noise with Nissan altima 2.5L engine
Mar 19, 2009 (7:44 am)
I have the same problem with my 2009 Altima 2.5 which has 6,000 miles. The engine started making noise about a month after I bought it in October 2008. The car has been at the dealer for the same problem at least 6 times and it is still the same. The engine sounds like a diesel engine when it is cold and sounds the same after it has warmed up when it is under load and acceleration. The dealer has tried a different oil filter, checking the converter heat shield for vibration and even replacing some spacers, that were not the correct size on the rocker arms, however, that did not work. The noise is still there and getting worse!!.
I really don't think that Nissan has a clue what is wrong with this engine. Fortunately, in Canada we have an arbitration program that can force the manufacturer to repair the vehicle or buy it back. I have owned Nissans for over twenty-five years, unfortunately, I think I got a lemon this time. I will give the dealer a chance to fix the car and if that doesn't work, I will go through arbitration. I just cannot drive around in a car that sounds like a diesel specially when it has a gas engine.
#71 of 119 Re: Noise with Nissan altima 2.5L engine [rayval]
Mar 19, 2009 (7:59 am)
Same thing happen to me found out I blew 2 cat converters not sure how but I replaced them both now its quiet not with Nissan cats because they are garbage did you service line come on
#72 of 119 Re: Noise with Nissan altima 2.5L engine [redsymphony]
Mar 19, 2009 (8:41 am)
No, the service engine didn't come on. It sounds like the noise is coming from the top of the engine, ie: lifters, camshaft, that is not getting proper lubrication. The noise is a knocking sound, like solid on solid. It is definitely not a normal engine sound.
#73 of 119 Re: Noise with Nissan altima 2.5L engine [rayval]
Mar 19, 2009 (2:54 pm)
Judging from the postings in this forum and the fact that my 2007 Altima 2.5 is on engine number two and it still sounds the same, these are definitely not isolated cases.
My engine was replaced 6000 miles ago and the dreaded sound is back. I regret purchasing this car.
#74 of 119 2004 Altima 2.5L
Apr 03, 2009 (12:08 pm)
Our 2.5L Altima definately has some rattles, but I am convinced they are heat sheilds. Based upon posts that say even dealers could not fix the rattles, I haven't even gotten under the car to see if I could do it. If it is just a loose heat sheild, there are lots of ways to fix it.
It seems those with newer models may have other issues by reading this post.