Last post on Jul 30, 2013 at 8:15 PM
You are in the Nissan Altima
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Nissan Altima, Engine, Sedan
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#66 of 685 Re: Nissan Altima: Engine Failures [latasha]
Aug 01, 2007 (1:08 pm)
Anyone that has a Nissan Altima 2.5L that is under warrenty, make sure you document and save all the maintenance records on your vehicle. Even if it's just adding a quart of oil, record it. Nissan does not make it easy to get manufaturing problems fixed.
My oil light came on before the first oil change, then again before the second oil change. I was slow in getting it in to service this issue, now they are caliming it is my poor maintenace that caused the engine problems.
I have a 2005 Altima with 32,000 miles on it, still under warranty, and I have to pay $3,000 out of pocket to replace the engine that never worked right with a rebult engine. I hope the rebuilt engine works better.
#67 of 685 Re: Nissan Altima: Engine Failures [bivcurtin]
Aug 01, 2007 (3:02 pm)
I was slow in getting it in to service this issue,
thats in you paperwork, and by doing that you voided your warrnaty. any car company will stipulate that if the oil light or certain other things happen, you are to stop driving the vehicle and get it to the dealership immediately. Few people do, but everybody should read the warranty and owners manual. In fact, I'd say it should be required before a car can leave the lot.
#70 of 685 Note
Sep 05, 2007 (8:05 am)
Some recent posts have been removed. We'd like to help folks who are having these issues, but we can't sponsor class-action suits nor can we support posts whose primary purpose is to send folks to other automotive message boards.
Please see the Membership Agreement for full details. It's linked at the bottom of the page. If you have questions, feel free to drop me an email.
Thanks for your understanding and cooperation.
#71 of 685 Re: Nissan EXCESSIVE OIL CONSUMPION [dkopesky]
Sep 05, 2007 (8:43 am)
Thank you for your information. I went thru the BBB auto line arbitration and won my case. I requested a trade and it should be completed soon. Having all my information together and not answering unasked questions really seemed to help the case. I would recommend that anyone going through this process keep good records and state your case calmly and compactly http://www.free-lemon-law-guide.com/magnuson-moss-warranty-act.php web site gives very good advise.
#72 of 685 2002 cracked engine block
Sep 11, 2007 (5:56 am)
I bought my 2002 Altima 2.5 SL in Jan 2004. Recently check engine light came on. It was coded random miss fire. A cracked engine blocked was found on no 4 cylinder. Since I've had it there have been no signs of overheating. I bought it with 33K it now has 95K miles. Head gasket and head were in good shape. I'm replacing the engine with a Jasper engine.
Have there been other reports of this problem. It really surprised me.
#73 of 685 Re: 2002 cracked engine block [tcraft]
Sep 11, 2007 (1:53 pm)
I haven't heard of any. there were some issues with the rings on very early 2006's that caused them to burn a lot of oil. But the 2002's seem to have held up pretty well.
#74 of 685 Re: new recall [missvholmes]
Sep 18, 2007 (11:40 am)
Thanks missyholmes and bigtuna for the info. I too have the same symptoms in my 2004 Nissan Altima 2.5S. Something keeps damaging the spark plugs in the cylinder. I believe there is strength in numbers to make Nissan fix the problem. It will be much harder if we take our cases to them one by one. They will pretend like its an isolated problem. What I want to do is create a list of names of people with the identical problem so that we can take our cases to Nissan and be heard. Please email me with the problem you are having with your car, your name, the year of your car, mileage, and your phone #. I will compile your complaint with mine and mail a copy to everyone. Then everyone will have proof in their hands that it is a Nissan defect. My email is pomurrayhotmail.com. Thanks.
#75 of 685 Re: new recall [pomurray]
Oct 18, 2007 (7:14 pm)
Well people, I think I have a handle on this oil consumption problem with the Nissan Altima 2.5S. Maybe not a solution, but at least a good understanding of what is happening and why. My daughter has a 2002 Nissan Altima 2.5S that she bought in December 2003 with 29,730 miles. It is starting to exhibit excessive oil burning at 97,000 miles. At the last oil change service, she came in with the engine oil very low, so low it would not even touch the end of the dipstick, the dipstick would pull out dry. I told her to check the oil frequently now, at least once every two weeks, and she now keeps a spare bottle of oil in the trunk. I have done all the service on this car since she has had it, so it has had excellent service. It always receives full synthetic motor oil and synthetic motor oil filter. We are monitoring it now to see what rate it is using the oil. There are no oil leaks at all, so it must be consuming the oil. I guessing right now about 1 quart in about a 1000 miles. I have a good idea of what could be causing this to happen because of several events that have happened.
First, I heard and read about the TSB and Recall on SOME of the cars about the problem with the precatalytic converter. My daugher took her car to the dealer and asked if this precatalyst recalled applied to her car, They looked up the VIN, and of course they said no. My understanding is that "under certain conditions", material from within the precatalyst can get sucked back into the engine, and the small particles can damage the cylinders, rings and plugs while bouncing around in the engine. I always thought this was very odd, as exhaust gas is supposed to be coming OUT of the engine, and INTO the precatalyst, and then OUT the precatalyst and DOWN the exhaust pipe and OUT the tail pipe. SO, how could this material go back up into the engine when all this exhaust gas is supposed to be coming out? It would seem that there would have to be some kind of pressure or force from somewhere to push the material back through the engine exhaust ports into the engine, but from where? So I thought about this for a while, then my daughter calls and says her 2002 Alitima 2.5S is making this strange sound, like air whoosing, when she steps on the gas, and the engine had very little power. But she kept driving it for a while until she could get by my house for me to look at it. When I did look at it, it did indeed make a strange whoosing sound, like a sound of rushing air when I stepped on the gas, at idle it sounded almost normal. So I looked underneath the car and I found exhaust gas was gushing out of the point where the bottom of the exhaust manifold/precatalyst is connected to the exhaust pipe with 2 springs and a gasket. It makes kind of a flexible connection so the the engine can rock back and forth a little bit. So I said that there must be quite a bit of pressure in the exhaust pipe for it to be leaking out like that with such force. So then I went to the back of the car to see how much gas was coming out the tail pipe, and when I checked I could feel none! When she revved the engine, I could barley feel a bit of exhaust gas. The exhaust was plugged up! So I got underneath the car and found that the exhaust pipe continues under the center of the car until it gets to this 2nd Catalytic converter before the muffler, it looks like a double cone, narrow at each end and fat in the middle. I felt the temperature of the exhaust pipe, and it was hot near the exhaust manifold, but got cooler as I felt closer to the 2nd catalytic converter. When I felt the 2nd catalytic converter, it was still cold, even after the engine ran for several minutes. That means it was plugged up! I unbolted the pipe and 2nd catalytic converter and took it off and unplugged it, put it back on, and the car ran perfect again. The gasket at the flexible connection was still perfectly good. The exhaust gas had been allowed to leak out at that point due to the spring connectors, when the pressure in the pipe got high enough the springs would compress, allowing the joint to open slightly, and allow the exhaust gas to leak out. Therefore, the pressure was high in the exhaust pipe all the way from the engine exhaust ports to the 2nd catalytic converter. This section of precatalyst/exhaust manifold and exhaust pipe has a volume and acts like a pressure tank holding high pressure when the engine is running, having higher pressure when the engine runs faster. So this is what happens, the exhaust coming out the engine exhaust ports is not a constant flow, as the exhaust valves are opening and closing very fast, so the gas comes out pulsating, pushing against the already high pressure in the precatalyst. At the end of a strong pulse, the high pressure in the precatalyst can actually push some gas back up into the exhaust port, because of the high gas pressure in the precatalyst. So, the Exhaust gas is exhausting into high pressure, and some of the high pressure can push back up into the exhaust ports in between the high pressure pulses of exhaust gas coming out of the exhaust ports. Under "certain conditions" it is possible for material to blow from the precatalyst back into the engine causing engine damage.
So, what does all this mean? I believe the problem originates with the design of the exhaust system, having the 1st catalytic converter so very close to the exhaust ports. I don't know of any other car that has the 1st catalytic converter built into the exhaust manifold so close to the exhaust ports. The problem doesn't seem to arise until there is backpressure in the system that can cause the precatalyst material to blow back into the engine.
I have not seen anywhere, where anyone has given a practical explaination as to why this is occuring, but this is the most sensible theory that I have been able to come up with. I believe that since the Nissan exhaust system design may have caused the problems with the engine, Nissan should pay the cost of fixing these cars. So I'm ready to jump on this band wagon too.
I would be very interested to hear comments from other owners who may have experienced this same problem or something similar. Has anyone else had problems with exhaust restrictions or similar problems?