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Nissan Altima Engine Failures

495 messages,  Last post on Nov 06, 2009 at 9:53 AM

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What is this discussion about? Nissan Altima, Engine, Sedan

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#271 of 495 Re: O2 cheater? [coop0129] by jd10013 May 14, 2008 (2:26 pm)
Replying to: coop0129 (May 14, 2008 6:11 am) something like that. the problem with hollowing out, or removing the cat is that there are 2 O2 sensors. one before, and one after the cat. if the both get the same reading, your SES light will come on. I'm not sure if you misspoke, but you said you might hollow out your cats. Don't do both. Its just the first (precat) that can cause problems. It's too close to the engine. the second cat farther down the line will not give you any problems. And, you'll need that second cat to pass inspections. anyhow, here's the link with your options. you can allways get a new header instead of hollowing out.   link title
#272 of 495 Re: O2 cheater? [coop0129] by electricdesign May 14, 2008 (6:06 pm)
Replying to: coop0129 (May 14, 2008 6:11 am) Why do you want to hollow out your cats, and why BOTH cats? That is drastic action and should not be done unless it REALLY needs to be done. You can't pass an emissions test if you do that. It depends on where you live and what kind of emissions testing that they do, it varies state to state. My state does not have any emissions testing, but yours might. I think a problem here is that people wander on to this site and read a message or maybe a few, draw some short conclusions, and make a comment , without really knowing the facts and doing the research. All the answers to what you need to know ARE in this forum, they have been posted over and over again. Please do some research and look for them. You read my post about how I hollowed out my cats, and you just assumed that you should too. Wrong. I hollowed my cats out for a good reason, because they NEEDED to be hollowed out. Few people have that need. Please go back and carefully read posts # 75, #76 & #77, and you will find out why I had to hollow out both my cats & what you need to do. In fact you should go back and read all the posts before yours, as they contain a wealth of information, including the $5 O2 Cheater, how it works and how to install it.
#273 of 495 Misfire by smoothride4me May 17, 2008 (9:35 am)
I have an 02 Altima, Took it in to the mechanic and it showed that the #1 cylinder there was a misfire.. It stalled at the stop light and hesitates like a misfire on the freeway. Any idea ? Replies to this message: electricdesign (May 17, 2008 4:12 pm)
#274 of 495 Re: Misfire [smoothride4me] by electricdesign May 17, 2008 (4:12 pm)
Replying to: smoothride4me (May 17, 2008 9:35 am) That miss could be from a lot of things. Need more info. Do you have the 2.5L 4 cylinder engine? How many miles on the Car? Is the Service Engine Soon light on? Does it miss when you first start up? Does it clear up sometimes and when, if it does? Does it miss the same all the time. Does it vary under different conditions, like cold, hot, fast, slow, braking, accellerating, etc. What else did the mechanic say? If he found the code for the misfire on cylinder #1, didn't he do further diagnosis? I would check ignition fire on all 4 cylinders and to a compression check on all 4 cylinders to start with. Have all the recalls been done? The camshaft sensor and the crankshaft sensor starting to go bad could cause things like that. Has the engine ever got hot? Those engines are sensitive to overheating and the head can warp easily, and when they do, it usually causes a head gasket leak. A head gasket leak will cause an engine cylinder miss. How is the engine coolant, is the coolant reservoir staying full, or do you have to add radiator coolant once in a while? Please elaborate with as much information as possible. Good Luck, E.D. in Sunny Florida
#275 of 495 No power by yankees1313 May 18, 2008 (10:37 am)
I have A 2004 Altima, it has no power. I tried the battery in my other car and I heard something frying when i hooked it up. i'm pretty sure I hooked it up right. Maybe i didn't but now even with my original battery in when I try to jump it nothing happens, I get a 0 on the dash and the both turn signal lights on. Any suggestions? I notice what looks like a computer chip or fuse box on the red possitive cable could I have burnt that out? Any help is appreciated
#276 of 495 Re: 04 Altima lemon [pdupuy] by fbc1 May 18, 2008 (2:43 pm)
Replying to: pdupuy (May 02, 2008 6:20 am) I'm having the same problems so your not alone! Unfortunately I still owe too much to trade it yet, but I will go back to American vehicles when I'm able. My advice is to do the same.
#277 of 495 Re: 2008 Nissan Altima [kannadiga] by fbc1 May 18, 2008 (2:47 pm)
Replying to: kannadiga (Jan 11, 2008 8:46 am) Buy American or German!
#278 of 495 '05 Pre-cat Failure by ckeough May 21, 2008 (6:39 am)
I have a 05 Altima with the 2.5 engine, 31,500 miles, which I bought used about 6 weeks ago and have put 1200 mile on. Last week the SES light came on and I had Autozone pull the code. The infamous P0-420.   Yesterday I had a dealer check it out and they found the pre-cat was "coming apart internally" and replaced it under warranty. Hopefully, none or very little material made it into the engine; I'll be keeping watch for oil consumption and hope that any problem with that shows in the next 30K or 2 years while the drive train warranty is in effect.   So, either the pre-cat was just a bad part or the '02-'03 recall situation will be continuing as all 2.5 reach higher mileage.   Anyone know if or what changes were made for the 04-06's at address the failure of the pre-cat? I'm thinking none other the the ECM re-programming to maybe lean out the engine.   Chris Replies to this message: jd10013 (May 23, 2008 1:39 pm)
#279 of 495 Re: '05 Pre-cat Failure [ckeough] by jd10013 May 23, 2008 (1:39 pm)
Replying to: ckeough (May 21, 2008 6:39 am) I'm thinking none other the the ECM re-programming to maybe lean out the engine.   that's all it really needs. the cat wont deteriorate without gas igniting in there. The problem isn't a faulty cat, or a faulty engine. its unburned gas burning in the cat and tearing it apart. You took your car in as soon as that light came on, a very smart man. unfortunately, most people dont. most people figure they left the gas cap too loose or something, and don't want to spend the $80-100 to get the code reset.
#280 of 495 Replacing intake manifold gasket on 2001 Nissan Altima by kynymac May 27, 2008 (10:26 am)
Hi all, I am new on this forum and hopefully someone can help me out. I am replacing my intake manifold gasket and have run into some kinks. I am using the Haynes manual as reference for my install. Do I have to take the head & timing chain off to get to the intake manifold? The manual did not make mention of the timing chain so I am at a loss. I am trying to separate the plenum from the head to get to it. Can this be done. Please advise. Replies to this message: electricdesign (May 27, 2008 6:07 pm)

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