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The computer codes from the ECM show nothing abnormal from the sensors. My previous city mileage was in the 17 to 18mpg range.It is just that I am running out of ideas as to where to look for the problem.
I was told that O2 sensors don't always just fail, they gradually degrade until they finally set a code....probably what happened to me. They also noted a large amount of buildup on the intake manifold which they cleaned using their "industrial" 2-part system. The result...unbelievable. I've fallen in love with this truck's performance again, and my city mileage has climbed back into the normal range.
Last time I had it changed was a never. The computer had not shown any O2 failure code however.
I'll mine replaced and hope for better results.
Thanks for the advice
Did Nissan Canada warranty your 02 replacements?
Woody
I have a 2001 Pathfinder with 51K miles.
It has a 6 month old set of Goodyear Fortera tires on it (that cost me a thousand dollars).
The car is regularly maintained, the tires are rotated and balanced every 7500 miles and I've had the front end aligned a couple of times...not really because it needed it but once before the new tires and of course when I had the new tires installed.
Here's the problem I'm having:
About a week ago I noticed the brake pedal seemed really soft and would go all the way to the floor when I stepped on it. The brake wear indicators did not squeak and the car has full stopping power... the pedal was just really soft.
By last weekend, it seemed to me that the front end of the car was actually lower than normal. I kept driving the car and by this past Tuesday I knew there was absolutely something wrong with the car. As I was going down the freeway at 50 to 70 miles an hour it seemed the car was actually lowering. I sorta had the sensation that I was driving on a flat or that a shock absorber (even though it doesn't have front shocks) had gone out.
I took the car to the Nissan dealership and they say nothing is wrong. They supposedly measured the cars height from the top of the tires to the wheel wells and it is perfectly level. They checked the struts and they aren't leaking and seem to have no problems. The brakes are at 50% wear so they don't need to be replaced. However, the mechanic did say the brake pedal was abnormally soft so they replaced the master cylinder.
I picked up the car today and the brakes are just like they were...the pedal goes all the way to the floor...and I mean all the way.
I still have the sensation that the car is lower in the front. I don't know what has happened but the car has a totally different suspension, and steering wheel "feel" to it. It is not like it used to be. It doesn't have the tight, "riding high up" feel...it's like a totally different automobile.
Does anyone have any suggestions? I know I'm not imagining this.
Thank you.
50K miles does not sound extreme for new struts needed. Push on each corner of front end and see if it comes up only once. A rocking front end (either corner) means struts are worn even if no leak is found in the struts themselves. Could also be worn coil springs not keeping proper ride height.
Ask Nissan service tech to test drive it with you. Same goes for the brake pedal problem. That is a really serious safety issue. Tell them to bleed the system if not already done. Could be a lot of air bubbles in brake line (maybe leak, check fluid level). If not, tell them to adjust the brake pedal, see if that is out of spec. Good luck.
I spoke to the dealer today. The 02 sensors are warranted the 3yr/60000k here in Canada. There are apparently 4 on ours, and replacement beyond warranty is about $200 each (he says this is a lowered price than previous). It is interesting as now they are an engine type warranty. On my 95 Pathfinder, they were an emission control device, warranted at least 5 years. I had two or three replaced and never spent any money. I guess the manufacturers are saving money by effectively reducing warranty claims. Nissan used to have the extended warranty pricing on the web site, but I see it is now removed, necessitating contacting the dealer.
Woody
Your suspension problem could be merely perception... How long have you noticed this issue, and have you modified anything on your truck (i.e. new tires, springs, shocks, seat adjustments, brush guard, etc.) immediately prior to noticing it? Under what conditions does your truck feel "lower"? Only when stopped? When driving? What speeds? You could try adjusting your rear view mirror so that the horizon is at a particular height in your rear window, and drive a while at different speeds to see if the horizon moves up or down significantly. Naturally, this assumes you evaluate on a level road for several miles.
considering a 93 PF SE. i need to put a rack on it though that can support a 14 foot ladder. any suggestions?
thanks,
k
Yet another reason to hate dealers ;-).
I have 2002 Pathfinder with 34,000 ml on it. I have had it for 16 month by now and had to replace oil control valve. How reliable this model is? Is it worth to purchase extended warranty on it? Thanks,
t
Best to search the web for a sensor. The Nissan dealer in my area wanted $171 for it. I bought it for $86 on the web. The sensor is made by Bosch.
Thanks to those who helped me diagnose my mileage problem.
Thanks
I just bought an '89 Pathy SE. Have been having a problem with it idling at 2k rpm at start then fluctuating between 1500 and 2000 rapidly after warmed up. I was thinking it might be a vacuum leak but have no idea for sure yet. Soon as I can get a service manual will be figuring it out, thought I would see if anyone knows alredy though.
Love this truck even with that problem.
Washer Motors: At least your rear one works. It should be separate from front pump. I try to look into this. Try to check if the fuses are out and if anything is clogging the lines.
http://www.willmanselectronics.com/nissan.htm
Any thoughts - what's likely to go next on a vehicle with this many miles, and will it fail gradually or without warning?
Thanks in advance to you auto experts out there.
I washed the car yesterday- water in somewhere it shouldnt be?
It is a 3 wire sensor that runs along the transmission and ends to a connector on the right of the vehicle. Make sure the wires are tied away from the right exhaust pipe.
Now I have a 2001 Pathy w/ 37K with no mechanical problems at all.
03 4Runner vs QX4, Pathfinder, Other - Longevity and Quality
Both parts are quite easy to replace yourself, if you're good with hand tools and are comfortable working on your truck yourself. The link requires a 17mm box wrench and an allen key to remove it. The swaybar bushing requires a bit more work because you have to place the truck on jackstands, but you need only remove 4 14mm bolts to replace the bushing.
Thing is, according to Edmunds and other sites, this truck is way below retail market by about $1500-3000. And it's being sold by a Ford dealer.
I am SO tempted to take the risk but what I really want to know is is what do you think the odds are that it is something serious? I know nothing about its history at all.
One more thing. The driver's side passenger door is really stiff. The vin on the door matches the vin on the dash. And I can't see anything to suggest that the door was repaired or replaced. There is no paint overspray, mismatch, etc. And the door doesn't creak or grown, it's just stiff. Any idea why?
I am salivating over this truck, but I'm going to have to buy it as is. Want to decide in the next day or so. After 3 weeks of looking, this is the first nice one I've seen.
Thanks!
The reason why I am concerned about this is that I just had to spend 220.00 to fix a broken window motor on my 1990 Maxima. Is this a common problem with Pathfinders? Is there anything I should do about this, or just wait and see if it gets any worse?
Good body work can cover up an acident but will not completely hide one. Look for rust and pieces with paint overspray (underneath car). If the dealer knows about any damage then they would try to get rid of the car as quick as possible. They don't always tell the truth so take their explanations with a grain of salt.
If you can live with slight damage then you can further negotiate a lower price (that would explain the already reduced price). Have the alignment checked out. Proceed with caution.
I learned the hard way from a previous Nissan truck purchase. It ran fine but had problems that could not be fixed such as body rust and frame damage (really bad alignment, could not be fixed properly and all other problems stemming from frame damage)
You can problably negotiate a Lemon Busters inspection if the dealer wants your business.
Good luck.
It makes me feel a LOT better to think I avoided a problem as opposed to having walked away from a cream puff. The last thing my Negative Nelly sister said as I reluctantly pulled out of the lot was, "Relax! What do you think they're going to do, sell it tonight?" LOL!
And I had had such a hard time finding trucks in my price range. Oh, well. I'm sure I'll find one eventually...
Tim
Vincent