Last post on Jul 30, 2013 at 8:15 PM
You are in the Nissan Altima
What is this discussion about?
Nissan Altima, Engine, Sedan
Go to NHTSA to file a safety complaint.
Or call Monday-Friday (8 am to 8 pm ET) (888) 327-4236 TTY: (800)424-9153
#650 of 685 Re: Nissan Altima 2002 2.5SL [guestk]
by MrShift@Edmunds HOST
Dec 01, 2011 (8:42 am)
Well the engine itself can be tested with a cylinder leakdown test, and after that you'll know the extent of internal engine wear. If the engine tests okay, you can also test the cat and the 02 sensors. There's no reason to be guessing here with a shotgun blast replacing all possible causes for the SES light.
but no sense replacing any parts on a car with a genuinely ailing engine.
#651 of 685 Re: masterbigrah [Mr_Shiftright]
Dec 01, 2011 (4:16 pm)
I think they only check for the code and gave me the following report:
"CODE P0420 TE CATALYST SYS-B1//CODE P011 INT/V TIM CONT-B1. VEHICLE SHOWS SIGNS OF OIL CONSUMPTION //VERY LOW OIL THIS IS SETTING OFF P0420 CODE// CATALYTIC CONVERTOR HAS INTERNAL FAILURE. COMING APART AND BEING SUCKED INTO ENGINE CAUSING OIL CONSUMPTION. RECOMMENDED ENGINE ASSMBLY AND/CATALYTIC CONVERTOR"
It took about 1 hr for the following report (MIL LIGHT DIAGNOSE)
#652 of 685 Re: masterbigrah [guestk]
by MrShift@Edmunds HOST
Dec 02, 2011 (8:54 am)
Well it's a logical conclusion based on what we know of these engines but oil burning alone isn't going to kill the catalytic....so if the engine isn't too badly damaged, in theory you could replace the catalytic and drive on while dumping oil into it every 1000 miles or so. But if the internal damage is too great, of course you reach a point of absurdity with oil consumption. Did the car smoke like a mosquito fogger?
#653 of 685 Re: masterbigrah [Mr_Shiftright]
Dec 02, 2011 (10:08 am)
No, the car smoke like a mosquito fogger?
Dec 07, 2011 (7:12 am)
I unfortunately received similar news on my 3.5S yesterday, also a 2002. Mistakenly I had assumed I replaced the entire CAT and all 02 sensors just this past March, but per my Mechanic, the $$1900 bill was only to replace 2 of 4 sensors and 1 of the 2 banks for the CAT. My '02 Altima has about 137K miles on it and seems to run fine outside of soft clunking reminiscent of a diesel engine (which I have been told is a result of the CAT requiring replacement).
While part of me simply wants to run the car off a cliff, I'm just wondering if the quote received (basically $4K to replace all sensors and the CAT) are in line with average costs. I've had this mechanic for years and this is the first time I've come to question a quote or necessary repairs. The SES light is now off again and it seems like I have some time to repair, but I don't even think my car retails for much more than $5000-$6000 and am worried about any larger repairs that may be required in the next 12 months as I'm just out of college and already helping a sibling get through college. Mechanic advised the gasket cap may need to be replaced in a the next year, but outside of that, car/engine looks pretty good.
So basically, since I really don't think I can afford a new car at this time, anyone know if $3800 is avg. repalcement for CAT and Sensors on a 3.5 Altima?
#655 of 685 Re: Code P0420 [trojo805]
Dec 07, 2011 (7:42 am)
I am not sure how much will the CAT cost for 3.5S. But with the similar engine problem Nissan recommended me to replace whole engine (long block) cat + additional parts for about $4100. I do not have that much amount to place new engine and that later after few months some new issue.
I had my car checked with local mechanic and he told I have to replace CAT. (He said it is dangerous to drive car with cat issues). Cat itself for my 2.5s will cost about $400-500(new) but along with that I am also planning to replace the two-three required sensors for $74-80 each. So overall it might cost about $1000-1200 for the car to run.
Checking the car my local mechanic told engine still looks good(no abnormal sounds, no weird smoke release or anything).
With this repair I will try to drive as much as I can and then sell/trade.
Dec 19, 2011 (9:10 am)
You seem to have had a lot of experience with the nissan 2.5 engine, so I decided to plague you with my questions. Of course, I also welcome any advice from other sources regarding this problem. My daughter-in-law to be has a 2004 nissan with a 2.5 engine. The car would not start for her the other day within minutes of shutting off the engine. She has over 176k miles on it and it is a used vehicle. The fuel pump comes on but the engine is not receiving any fuel. Oil use and level has not been a problem. Any suggestions? Please reply on post I will ck frequently.
Thank you smedsleas
#657 of 685 Re: Code P0420 [guestk]
Dec 28, 2011 (11:55 am)
Thanks for the feedback....so in hopes to start of the New Year fresh and worry-free...fingers crossed, I agreed to have the work done this week. The problem is that I already have 1/2 the cat replaced...just bank 2 in May for about $1500. The other bank (bank 1 is now failing) so have to replace bank 1 and remaining sensors (O2 ad NO2) to hopefully give me another 3-4 years with this baby. With replacing an engine belt, changing some fluids...I'm dropping about $1700 with taxes and all fees. Ugh...but better than a new $25K loan, especially with house or grad school on the horizon. Much appreciated.
#658 of 685 Update on Post #655
Jan 04, 2012 (7:33 am)
So as an update on my recant post #655 yesterday I received SES(Service Engine Light Soon). Checked at Auto Zone with result of an P0011. Not sure what might be causing this as I replaced Camshaft Position actuator few weeks ago and drove about 450 miles with no issue. The light came on right after I filled my tank with mid grade fuel(octane) asn my mechanic told that will help my engine. Auto Zone stated three possibility.
Definition for code" Intake valve control circuit failure bank1"
" IVT control solenoid open or sorted"
"cam/crank sensors out of phase"
"dirt buildup at control valve"
Not sure what further to do, waiting to hear back from my mechanic. Hopefully it's not much costly. Please let me know if you have any advise or suggestion Thanks.
Nissan Altima 2002 2.5SL
#659 of 685 Re: Update on Post #655 [guestk]
Jan 05, 2012 (12:09 pm)
there are two identical sensors that usually go out at the same time
if you just changed the one sensor, you will need to change the other one as well
One is on top "crank shaft position sensor"
and the other is below is the "cam shaft sensor"
both units are the same - both need changing