Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Nissan Quest Transmission Problems

jr714jr714 Posts: 24
Help! I just had a transmission flush on my '02 SE with 32K miles only to learn today that I may have permanently damaged my transmission. Should I do a regular transmission oil, filter and gasket change now or will that only make it worse? Or should I just wait another 30K miles and worry about it then?


  • toomanyfumestoomanyfumes S.E. Wisconsin Posts: 892
    Why do you think your transmission is damaged?
  • jr714jr714 Posts: 24
    Because of this article:

    And a few other posts on the Villager/Quest problems thread.
  • dtownfbdtownfb Posts: 2,915
    If the transmission is shifting fine, you are probably Ok. Also I have learned that service centers use differnt terminology. Some shops refer to the procedure described in the article as a "power flush". a normal flush is simply running fluid through the transmission until it runs clear.

    Not unless your transmission is shifting funny, relax and enjoy the vehicle.
  • jr714jr714 Posts: 24
    Thanks for the reply.
    The shop told me they had a new machine to flush the fluid. After it was done I mentioned it to my brother-in-law and he said they probably didn't change the filter or gasket. So I called the shop and they said that newer transmissions are more advanced and don't need the filter or gasket changed until the vehicle has high miles or if there is a leak. He also told me the machine they use goes directly through the dipstick. I imagine it must have been a "power flush".
    My transmission does seem to be shifting OK. Does your Quest shift very quickly at low speeds? In normal acceleration mine is in 2nd gear at 10-15 MPH an in 3rd by 30. Unless you think there is a chance the trans was damaged due to the machine forcing clogged particles in the wrong places, I won't worry.
    On the other hand, maybe its worth doing a regular trans oil filter and gasket change somewhere else to be sure.
  • Stever@EdmundsStever@Edmunds YooperlandPosts: 38,964
    I don't believe in power flushing the transmission. Here's some threads that may be of interest:

    amigo_john, "Isuzu Trooper" #8070, 30 Jun 2003 6:46 am

    steve_, "Ford Escape/Mazda Tribute: Problems & Solutions" #3411, 30 Jun 2006 8:09 pm

    goodcrd, "Jeep Liberty Diesel" #7562, 26 Aug 2006 6:59 pm

    This is about the best rebuttal post on the benefits of flushing around here:

    electricdesign, "Ford Explorer: Problems & Solutions" #5215, 20 Jul 2006 6:41 pm

    I guess I'd want to nail down whether your procedure really was a power flush or just a fancy fluid change without any pressure. Plus if your tranny doesn't fail in the first week after flushing, that's probably a good sign. ;)

    Steve, Host
    SUVs and Speed Shop
  • jr714jr714 Posts: 24

    Thanks for the posts.

    This is all I needed to know. Now I will check my Haynes manual to see if it has a screen or filter. If it has a screen, I'm OK. If not, I will have another change done to replace the filter.

    Luckily I'm doing this at 30K. At 70K I'd be a lot more worried.
  • toomanyfumestoomanyfumes S.E. Wisconsin Posts: 892
    Could you let me know if your Villager has a screen or filter and what the interval for the fluid change is? (Maybe Steve would know this also) I haven't done anything with the tranny on my '01 Villager withe 54K and was considering changing the fluid and filter. The owner's manual covers like every ford transmission for the maintenance intervals and I don't know what transmission I have.
  • Stever@EdmundsStever@Edmunds YooperlandPosts: 38,964
    The maintenance schedule in my service manual says to inspect the fluid every 12 months/ 15,000 miles for normal service (schedule 2). Same interval for schedule 1 but if you tow, use a camper or car-top carrier(?) or drive a lot of rough, muddy roads, then change the fluid every 30,000 miles. I don't know where they cut and pasted the camper/car-top stuff from since you can't put a camper shell on a minivan (unless you want to be a YouTube star!).

    I don't see anything about being able to clean or replace a transmission (or automatic transaxle) filter or screen. A couple of the diagnostic flow chats have you remove the pan to check the condition of the fluid and the book also says that if you change the fluid and it's dirty, to change it again until the fluid is clean.

    There is a magnet in the tranny pan.

    The owner's manual may say something different?

    Steve, Host
    SUVs & Speed Shop
  • toomanyfumestoomanyfumes S.E. Wisconsin Posts: 892
    Thanks for the info Steve. I checked my fluid and it looks clean and red. I'll probably change it next spring. I see by the dipstick it uses Mercon/Dexron 3.
  • Howdy all of you,

    I have a problem (maybe more than one) that I am trying to troubleshoot on my '99 Nissan Quest GXE (111 000 km/69,000 mi). The MIL is on.

    The engine has begun abnormal harsh shifting during 1-2 and 2-3 upshift and 3-4 (overdrive) doesn't engage while driving at 70-80-100 kph (43-50-62 mph) and even more excessive speed. I fact shifting occurs at abnormal higher speed. 2 weeks ago, another problem occured. I was not able to drive because rpm was fluctuating between 2000 and 2200 with a speed limit of 20kph (12 mph) even if I step on the accelerator.

    I borrowed a scantool and code scanned the vehicle and came up with the following fault codes:
    P0105 - Manifold Absolute Pressure/Barometric Pressure Circuit
    P0325 - Knock Sensor 1 Circuit Malfunction (Bank I)
    P1605 - A/T Diagnostic Communication Line
    P0446 - Evaporative Emission Control System Vent Control Circuit
    P1400 - EGRC Solenoid Valve
    P1705 - Throttle Position Sensor Circuit A/T
    P1105 - MAP/BARO Pressure Switch Solenoid Valve
    P1490 - Vacuum Cut Valve Bypass Valve (Circuit)

    I started troubleshooting the Nissan Quest 1999 service manual borrowed from the dealer which I don't have anymore. I checked the absolute pressure sensor power supply.

    1. Ignition switch "ON".
    2. Voltage between terminal 3 and ground with tester is 0.4V (should be approximately 5V).
    3. Detect malfunctionning harness connectors (looks OK).
    4. Detect harness for open or short between ECM and absolute pressure sensor. Short (or continuity) exist between terminal 3 and ground.

    My question are:
    What can cause the harsh shifting problem? What should I troubleshoot first?

    How do I locate the short between the sensor and the ECM?

    Recently, another problem occured: the radiator fan is running continuously (meaning 100% of the time). I think it is related to the thermostat but I'm not sure and would realy appreciate any suggestions/answers any of you could give me.

    I am on my own with this and am seeking some Nissan expertise to try and get my Quest back to running good. Thank you in advance for help you may be able to give.


  • Stever@EdmundsStever@Edmunds YooperlandPosts: 38,964
    Hey Hugo, I'm not a tech but I have a manual for my '99. The shift is regulated entirely by electronic signals transmitted by the revolution sensor and throttle position sensor. Those signals control a couple of solenoid valves. There's a bunch of stuff to troubleshoot from there, but the throttle position sensor is often one of the first things on the list.

    Check out the Online Repair Manuals links and see if you can access any of them. I didn't see any help at the AutoZone link but I've had good luck with the Auto Repair Reference Center. Maybe a library in your area subscribes to it.

    You may want to check out the Transmission Traumas? and Cooling Systems: Problems & Solutions (Radiator, Fan, etc) discussions too, and hopefully someone knowledgeable will show up in here soon.

    Steve, Host
    SUVs and Speed Shop
  • eric1030eric1030 Posts: 1
    hello, can someone help me out on my mercury villager 94 problem. my mechanic had to take down my transmission to replace a leaking freeze plug, so he drained the xmission fluid on the torque converter, then filled it up, when the everything is back in place, I had this reverse problem... evrytime I step on my gas and execeeding the RPM to 1300rpm the RPM/(tacho meter) goes up, even though the brake is already applied, the van will not stop coz' the RPM never drops, so I have to put it to nuetral to be able to brake. But reversing is ok when RPM is below 1300rpm, as long as you don't step on the gas to hard. And also if you are reversing in an inclined position with out stepping on the gas the RPM also goes up. Can someone please help me out. thanks...
  • 99 Nissan Quest done a T-belt then customer comes back. Now speedo dont work. Replaced VSS. Still no luck. Any advice?
  • Forgot to say tach dose not work either
  • Purchased 07 Quest S in May 07.
    Checked mpg for trip only got 20 mpg at 65 mphr.
    What can I do improve mileage or when does it get rated mpg?
  • dtownfbdtownfb Posts: 2,915
    How many miles do you have on the vehicle? How are you calculating the mpg? If it is anything other than total miles driven on the tank divided by gallons of gas pumped, then it is not accurate. The mpg computed by the computer is fairly close if you remember to reset it once you fill up. Otherwise it is giving you the average mpg since the last reset.

    BTW, it took about 7k - 8k miles before I started seeing 24 mpg on the highway. Let's not discuss the city driving.
  • ttghttgh Posts: 1
    Just curious. Was the problem described above ever resolved. I am having the same problem with my 2002 Nissan Quest. I have had the TPS sensor replaced and yet the problem still exist. However, I only get the harsh shifting went the engine has time to warm up. I thinking I might have a cold sauder on the EMC. Does everyone known where the EMC is located?

  • carzzzcarzzz Posts: 282
    My Quest is experience shifting flare. when shifting in 2-3, the rpm spikes up by 100-300. It is a 4 speed and I have only put slightly over 10k miles on it. Has anyone experienced similar issue?
  • I own a 2005 Quest that has until today had no transmission issues. This morning I was unable to shift out of park. I looked up the issue in the manual and was directed to use a screwdriver to depress the "shift lock" lever (accessible after removing a small plastic cover on the shift block). I did that and could then shift into drive, but apparently I will have to do this same thing everytime I try to shift out of park -- plus, the manual says the depressing the lever can also affect the brake lights. Has anyone had this problem? What did you do? thanks
  • Stever@EdmundsStever@Edmunds YooperlandPosts: 38,964
    I haven't had the problem on my Quest but have seen similar reports on other models. I've never heard the warning about affecting the brake lights, but often the shift interlock and brake lights are on the same circuit. In fact, if the brake lights aren't working, that could cause the shift interlock to malfunction.

    You may have a burnt out brake light or a bad fuse. If the fuse and lights are ok, the brake switch could be flaky or you could have a bad interlock solenoid.

    Steve, visiting host
Sign In or Register to comment.