Last post on Oct 23, 2006 at 2:24 AM
You are in the Nissan Quest
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Nissan Quest, Electrical, Engine, Van
#1430 of 2128 Re: Vibration in Floor/Pedals at 2000RPM [toddm1]
Aug 05, 2005 (10:49 pm)
I have my 04 Nissan Quest for more than 6 months now and on the third month since I bought it I also noticed a vibrating noise coming from underneath the vehicle. It starts at around 2000 rpm you'll notice it everytime you accelerate. It sounds like the heat shield is vibrating. I took it to the dealer for 3 times and they keep telling me its all gone after they fix it, but everytime I drive it its still there. They even told me that the next time I bring it in, theyll have to replace the exhaust system and charge me for it. I think the vehicle is still in warranty, but I dont know why.And one thin I notice too is that a portion of my exhaust pipe is flatened. Should'nt that obstruct exhaust flow and hinder the vehicle's performance? Could anybody check their exhaust pipes if a portion is flattened and let me know coz to me it dosnt make sense. Marc.
#1431 of 2128 IT IS GONE FOR GOOD :)
Aug 06, 2005 (4:48 pm)
I turned in my quest for good yesterday...... Nissan, only after a year of fighting with them, have bought it back under the law. I am glad to be rid of it, and only hope that my next vehicle will not be any problems, I am not sure any can be as bad as the quest was! If you have enough problems with your 04 quest as I did, don't give up if you really want it gone. Good luck to everyone who has and are still having problems.
#1432 of 2128 Re: 2005 Quest Warped Rotors [billy8]
Aug 06, 2005 (5:48 pm)
We have a 2004 Nissan Quest that has had the same vibration problem for awhile. We assumed poor tire balance. Last Wednesday, we took the van in to the dealer for scheduled tire rotation and got the tires balanced. Vibration didn't go away. Called dealer and they actually mentioned "warped rotors," which at the time sounded like b.s. I guess it's not!
Do I understand you to say they fixed your problem under the Quest's warranty and you didn't have to pay anything? The TSB you mention is listed as '04/'05 Titan and Armada brake judder, but all Nissan dealerships will apply this to Quests as well? Your dealer seemed to be well aware of the problem, but I don't want them to try to pass this off as something peculiar with just my van. I want to be armed with as much documentation as possible when I take the van back to the dealership Monday morning, so anything further you can offer would be greatly appreciated!
#1433 of 2128 Re: Vibration in Floor/Pedals at 2000RPM [mgrino]
Aug 06, 2005 (6:11 pm)
There are two service bulletins that deal with exhaust vibration problems. I had the same sound at 2000 rpm on my 2004 SE and it was a broken bracket that holds the exhaust to the engine. The bulletin has good pictures showing good detail which bracket it is and where it is located. Its not too hard to crawl up under and see the crack. Bulletin #05021 shown at this link - http://www.nissanhelp.com/Ownership/Bulletins/Nissan/2005/NTB05-021.htm
The other vibration problem deals with a clearance issue with the rubber bushings and the frame of the exhaust system brackets. If the clearance is too small then the rubber bushing rubs against the bracket frame causing vibrations. They also have parts for adding a mass damper to reduce the vibration even further. Bulletin #04096 shown at this link - http://www.nissanhelp.com/Ownership/Bulletins/Nissan/2004/NTB04-096.htm
The sad thing is I had to print these out and show them to the service department before they would believe that there was a problem.
I had both these performed. The noise was instantly fixed and the vibration was improved, but not fixed. I still felt the unusually high amount of vibration through the gas pedal and the floorboard around 2000-3000 rpm and they ended up replacing the entire exhaust system (under warranty of course). It helped a little, but there is still some vibration that I think is more than normal. It may be something I have to live with.
Hope this helps.
#1434 of 2128 Re: 2005 Quest Warped Rotors [billy8]
Aug 06, 2005 (6:15 pm)
Thank you very much for your message. The articles that you posted explains a lot of the problems have that reoccur. I appreciate your research!
#1435 of 2128 Re: 2005 Quest Warped Rotors [derekjason]
Aug 06, 2005 (6:48 pm)
Yes my dealer, Morries Nissan, Brooklyn Park, MN knew all about the problem with the rotors on the new Quest.Its the same problem the Titan and Armada have. The dealer resurfaced the rotors on warranty in one hour for free. They used the Pro-Cut hub mounted on vehicle brake lathe. This is the only machine that will do the job correctly almost 100% of the time. You must make sure your dealer has this machine to do this job. Also go to the web sites in my previous post #1427 and print out this info and take it to your dealer. They may try to say the rotors are only covered fo 12 months/12,000 miles. I would then call Nissan customer support.My vans symptoms started at 3000 miles. I felt a vibration in the steering wheel when braking. The faster land speed the faster the vibration when braking. I could also feel the vibration in the steering wheel when going faster than 55MPH and not braking. I thought this was strange, not just a warped rotor. My vehicle is fine now. I hope this helps.
#1436 of 2128 Re: 2005 Quest Warped Rotors
Aug 06, 2005 (9:25 pm)
As I am reading about dealers machining rotors to fix the vibration problem, to me this is a short term band aid fix. Obviously, when the vehicle was brand new, it didn't have this problem, which means the rotors are good. So after a short time of ownership, the rotors gets heated and cooled repeatedly and eventually warps. The rotor is basically a big mass of a heat sink (to dissipate heat). The dealer's solution is to machine it which is to take more mass out of the rotor. But now you think, whatever the reason it was in the beginning that caused the rotors to warp still have not been fixed. Now your rotors are thinner which means it's a smaller heatsink and more prone to warping. After several more times of machining, your dealer will tell you it can't be machined anymore, and will need replacement. Then your next brake job will be very expensive. I can only guess that a Nissan rotor is around $100 - $150 each. Nissan needs to step up to the plate and fix this problem once and for all.
#1437 of 2128 Quest Warped Rotors
Aug 07, 2005 (1:07 pm)
For more info. on this problem go to www.nissanhelp.com on the left side of the page see ownership, click on diagnose, select model,Quest, See Suspension,ABS,Brakes,Tires. Click on Brake Noise/Judder/Pedal Feel/Diagnose and Repair TSB. This Tsb will explain the problem according to Nissan, too much run out on installation of rotors. I have had my rotors resurfaced with this PRO-CUT machine. They seem fine now. If you go to the PRO-CUT website you will see that this machine is specified by most all the auto makers. It seems this is not just a Nissan problem. If my rotors cause vibration in the future I will know this was just a bandaid fix. I sure hope not. Time will tell. I will keep the forum informed of developments.
#1438 of 2128 A/C Temperature
Aug 07, 2005 (8:45 pm)
I went to the dealer Saturday and worked with the Service manager on my Quest SL A/C not cooling enough. He brought out a analog thermometer and the dash measured the outside temperature as being 88F, then with the A/C switched on to fan speed 4, the lowest reading we got from the vent was 61F. Now 61F seem cold, but typically a good working A/C would have vent temerature of 40-45F. By the time this cold air blows into the cabin, it would rise by 20 degrees which will cool the cabin to about 70F. We sat and looked at the reading for 10-15min and it stayed at 61F. I told him it doesn't cool the vehicle enough to be comfortable, but he disagrees saying R134 only cools 20degree below ambient temperature. The service manager even challenged my knowledge of A/C which really piss me off. No, I am not a mechanic, but at the same time, I have owned 4 other vehicles which had sufficient cooling. I am going to wait a few weeks and take it in to have the techs check the R134 level.
#1439 of 2128 Re: A/C Temperature [cirruss]
Aug 08, 2005 (1:41 pm)
I know this sounds obvious, but I have to ask due to my experience with my 2004 Quest. When you turn on your A/C, is it recirculating cabin air or pulling fresh (hot) air from outside? One of the quirks I noticed with mine, it always defaults to pulling fresh air from outside, and in this summer's heat, it NEVER gets the cabin cool enough. As soon as I switch over to recirculation, it cools down immediately.