Last post on Mar 31, 2013 at 11:07 AM
You are in the Nissan Pathfinder
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Nissan Pathfinder, SUV
#1439 of 2763 Re: O2 sensor [bamafamily]
May 06, 2005 (2:48 pm)
I have a Nissan Pathfinder 2002 and the SES light came up. I took it to the dealership and they first changed a vaccum emission sensor that took the
SES light to off for a day and then came back up again. Then they changed
the ECM that kept the light off for 1.5 days and now it is back on. I got tired
and got an actron scanner to read the code and it reported OBDII P1130 code
saying "Oxygen Sensor Fuel Trim at Limit *codes* A U" Now what should I do??
Is this dangerous? Help..................
#1440 of 2763 Re: 05 Pathfinder: Twang Prior to Shift from 1st to 2nd [keeferb]
May 08, 2005 (8:35 am)
Vehicles of other manufacturers with the equivalent of VDC don't appear to make this sound. I can't believe that Nissan, with the latest technology at their disposal, would design a vehicle such that this noise is normal. I am taking mine in on Wednesday for a couple of other minor issues and I'll bring up the "twang". I'll post the outcome.
#1441 of 2763 Re: 05 Pathfinder: Twang Prior to Shift from 1st to 2nd [theburds]
May 08, 2005 (8:08 pm)
The Mazda RX-8 makes a "clunk" from time to time while "calibrating" the stability system. Usually only once per run.
#1442 of 2763 Re: 05 Pathfinder: Twang Prior to Shift from 1st to 2nd [pathstar1]
May 12, 2005 (4:43 am)
I took my '05 in for a couple of things earlier this week and mentioned the 1st to 2nd twang. The technician did not know what it was and tried another vehicle on the lot. Same thing. He said it must be normal. I then went back to owner's manual and sure enough, on page 5-28, it describes the ABS self test which may produce a "clunk". Sorry to have caused undue concern to anyone. After a couple of growing pains, I am back to loving my Pathy!
#1443 of 2763 Re: 05 Pathfinder: Twang Prior to Shift from 1st to 2nd [theburds]
May 13, 2005 (5:12 am)
Thanks for the update!
#1444 of 2763 05 Pathfinder 1st Service: Great job!
May 13, 2005 (8:35 am)
Just got my 2005 Pathfinder SE back from its' 3000 mile service. Dealer did a great job and truck was done in one day as promised. Here are the issues that were addressed (in addition to a routine oil change): 1) The intake manifold was replaced due to the rattling noise with acceleration (more like fluttering) that was reported in the nissan TSB. The car was checked, noise was confirmed and part was replaced. Nice smooth, quiet acceleration now. As a side note, my truck was built in 01/05. 2) A rattling noise emanating from the dash at idle was traced to an A/C line in contact with the dash/firewall. Problem solved - nice quiet idle now. 3) Creaking drivers side window when about 1/2-1/4 of the way down. Traced to ?insulation? in contact with window. Still an occasional creak, but much, much better. Overall I have been very happy with the truck and it rides even better now that the day we picked it up. One minor issue we still have is that the brakes still squeak loudly when they are wet or when you put the truck in reverse. Will wait and see if this improves.
#1445 of 2763 Re: 05 Pathfinder: Twang Prior to Shift from 1st to 2nd [theburds]
May 13, 2005 (8:35 am)
The manual may be correct, but in my experience ABS alone doesn't do that. You have to also have DSC or TCS (dynamic stability control, or traction control system). Those systems require calibration, hence the noise when they "test" the braking force input sensitivity. My 2001 LE has ABS, but not TCS, and doesn't make the noise. Note that when the "auto" 4WD mode is selected it does "lurch" when the engine is shut off or after about 10 sec. of idling in park. This is the auto 4WD front drive clutch disengaging.
What DSC or TCS does is a little scary. When the computer senses an "unsafe condition" (you are going too fast around a corner, for example, and start to slide - so little that you actually don't notice yet), it applies individual wheel brakes to correct the situation. This is what it has to calibrate - how much brake force does it take to skid a wheel.
You might wonder just how much good this type of system can do, but we have seen several cases where big accidents were avoided due to the systems. In one case, a head-on collision was avoided, and in doing so the driver would have normally spun off the road and flipped in the ditch. The DSC allowed him to recover and swerve back into his own lane after he avoided the head-on! Very impressive! He and his wife are very happy with the car (this was in an RX-8). It may have saved their lives! A SUV like ours will benefit even more from this system.
May 13, 2005 (9:11 am)
"This is what it has to calibrate - how much brake force does it take to skid a wheel. "
The TCS doesn't try to "skid a wheel" if the truck is oversteering. That would make a bad situation worse! Nor should it be attempting to apply maximum braking force (ABS engaged) to one or more wheels if the oversteer situation is minor. It should only apply as much braking force as necessary to correct the vehicle's direction. I seriously doubt that the calibration attempts to "skid wheels" during its self-test, so I fail to see why you interpret this as "scary". If anything, the self-test likely just runs the ABS pump at a low level to verify that it's operational.
#1447 of 2763 Re: TCS comment [xplorx4]
May 14, 2005 (8:22 am)
I think you have misunderstood some of what I posted.
Actually the system does apply the brakes, though it isn't to see how much force it takes, it's to ensure it can see the decrease in the pulses from the wheel. It needs to know that if it skids a wheel it will see it so it will NOT skid a wheel in operation - it will have control. When I say "skid" I mean it applies brake force until the antilock pulse rate starts to drop. You or I wouldn't notice the wheel is slipping as it is very subtle at that small "skid rate". The pulses it looks at are generated magnetically from those toothed wheels on the hubs - they were put there originally for the ABS, but the DCS/TCS systems use them as well. These systems can compute vehicle dynamics from the four pulse streams (direction, which, if any, wheels are slipping, etc).
What I interpret as "scary" is the systems' ability to correct situations that even a professional driver couldn't (though a professional wouldn't get into that situation if he/she could help it). It can do this because it has individual control of each wheel brake, something no driver can do - and it can correct in millisecond time intervals, something else no driver can do. We operate with about a 250 mSec. time delay.
The self test causes the running gear to "thump" - it does activate the brakes - usually just for a few milliseconds. So yes, it does try to detect proper braking operation - ie - application of "brake enable" will decrease the pulse rate from the ABS sensors. When we interrupted this pulse rate signal on an RX-8 it got very upset - and put the car in severe "limp mode" - max. speed about 50 MPH, low power, dash system warning lights flashing. Oops! It recovered once we gave it back the signals and reset it.
In case you're wondering, the object was to try to fully disable the DSC system so we could dyno the car properly. We were unable to do so - the car is "too safe", so dyno results can be iffy as the car will eventually go into a "safe mode". The various systems are tied together very tightly, and even when the DSC system is "off" (dash switch can be used to disable it), it still functions at some level. We haven't tried messing with my Pathfinder because I don't care how much HP it has - it has more than enough for my needs , and mine doesn't have the TCS.
#1448 of 2763 HELP did i get ripped off
May 14, 2005 (11:56 pm)
Please advice... EXPERTS...
I just got back from a 45K service on my 2001 4WD Pathfinder.
Check engine light was on, they replaced the intake timing sensor...$ 84 for the part and $ 99 for 1 hour of labor. Is this charge normal for the part and labor?
Performed a complete transmission Fluid Flush. $ 179/- Was this necessary at 45K.
Transfer case service was done $ 75/- Am not sure what this does and if it was needed.
Replaced front brake pads and resurface rotors for $ 310/- Is this charge to high? And I'm not sure if this was needed.
Add to that they performed rear brake service for $ 50/, what is it that they do when the say brake service.
Replaced "Belt Compr" and "Belt Fan&A" to $ 150/-
And the standard charge of $ 140/ for the 45K service...
They had more planned and refused the following service
Oil Flush and Front and Rear Differential Service.... Do I need to get this done or is the dealer just plain ripping me of carrrying out unneccesary work on my truck.
Any ideas how much this should cost including labor for a 4W pathfinder 2001?