How do you change the transmission mount on a 2001 Nissan Sentra SE.Step by Step would be great
Country: United StatesMake: Nissan/DatsunModel: Sentra SEYear: 2001Engine: 2.0
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I will do my best to give you instructions on how to change the trans mount
Do you have a floor Jack?
Ok, I am working off memory cause the Service Manual doesn't give step by step instructions.First I remove the air filter box assembly and the intake duct to the throttle chamber.Then by looking down, you will see 4 bolts around the base of the trans mount with one bolt going through the bracket. Now, I take a 2x4 and put it on the jack so it doesn't damage the trans pan. So I slightly jack up the trans, then remove the cross member mounting bolts. Only remove the two on the front, and the 2 or 3 on the back. Then remove the one bolt that pass's through the trans mount. All the bolts on the trans mount should be a 14 mm. So you need to remove the bolt and nut. You will need to slowly lower the trans to slip the bolt out. Once you have it out. Lower it down just a little bit more and then remove the 4 upper trans mounts bolts and slide out the mount. Then install in reverse order.If you have any more questions on this, please feel free to ask. Thanks Jay!
so we have to remove the cross bar. this cross bar has two mounts that i already changed, but i did not change trans mount and i am suspecting the vibration i feel in reverse and drive only, park and neutral are fine, just drive and reverse i feel more shaking at idle, so i think maybe this vibration is coming from the trans mount when in gear, u think.
How many miles on the car? If the trans mount is not visably broken then I would not rush to change it.Let me know, Thanks Jay!
140,000 miles. If not mounts what can cause this. I changed soark ,plugs and wires with nbk ones
Did you clean the throttle chamber and do a idle relearn?
How do I relearn idle and where do I clean. It just sea gearms rougher in reverse and drive only at idle. In these gears the rpm is in mddle of 0 and 1 and at park it little above 1 when cold and 1 when cold
Probably cause the idle is low. That is why it seems ruff.To clean the throttle chamber, remove the intake duct and get a can of carb cleaner and a old tooth brush. Spray and scrub clean the throttle chamber, and make sure you have the throttle open to clean it properly. Then whip clean with a clean rag. Then put the intake back on. It will be hard to start, but keep at it till you get it running. Then after you get it running, just rev the engine a couple times to blow it all out.Give that a try first, then I will give you the instructions on how to perform a manual idle relearn.Thanks Jay!
Do u have pics of this? How do u take it off?? how do you open throttle
The air intake duct is that big black rubber hose that goes to the air filter box. To open the throttle just pull the throttle cable.Sorry I don't have a picture, if you want one I can see if I can find you one. What is it you want a picture of. The throttle chamber?
ok i know where that black rubber hose is.yes a picture of the throttle chamber and a picture of the throttle and throttle cable.if i take this big black rubber hose, there is a big metal circle. what do i clean inside there.
How about this. Cause finding a 2.0 engine picture is tough. Can you take a picture of your engine and I will point everything out to you?
Ok that throttle chamber how fndar deep do I clean from opening? Do I spray lots of cleaner inside opening and just brush it
Just the rim where the throttle plate is. Enough that when you pull open the throttle butterfly that whole chamber area gets clean.
ok, i did this cleaning and you were right took a while for car to turn on. when did, I noticed the idle is different, although this vibration is still active in park and drive. i inspected the transmission mount with this air thing off and i did not notice anything out of the ordinary, although it is is hard to see the whole mount. it looks a little squeezed up at top, but i thin this is normal. i dont see any obvious cracks, but who knows. do you think i should change this since i changed the other 3?
That is up to you. If it doesn't look broke, then why change it.Thanks Jay!
you think it can get weaker without actually breaking that causes vibrations. do these usually go bad at 144,000 miles. what is weird, i dont feel the vibration from outside. seems only inside i feel it. it sounds smooth from outside.
Did you replace the other mounts with after market mounts?
i think so
They could be actually be giving you the vibration. After market mounts are much stiffer than the factory ones. If the vibration is not that bad, I would not worry about it. Thanks Jay!
well it felt much better after changing them.
If they were broken, it will feel better. If you want to change the trans mount, that is the only one left. That is up to you. I gave you directions on what you would need to do to change it. But if it's not broken, you don't really need to change it. But if you want peace of mind and that all mounts are new, that is up to you.Thanks Jay!
after cleaning that thing like you said, it now seems there is more vibration on drive then reverse. Reverse still has vibration, but less, but drive has even more.
let me rephrase this, in drive the vibration is the same before cleaning, but reverse is not as bad as it was, but still a little present.
What is the car idling at now. It should run smoother not worse. Did you drive the car to blow it all out?
drive and reverse are still same, but park/neurtral are now at 1, even when cold and when warm, goes down a little less then 1.
can a leak from distributor o-ring cause issues?
The running ruff?
yeah, how about pcv?
Low base idle can cause the engine to run a little ruff. The PCV really won't cause a ruff idle. Vacuum leaks can.
what rpm should it be at for my car?
how about bad gas?i had this same tank of gas for probably like 10 months and had the car sitting for 6 months before working on it.
Around 650 to 750rpms at idle.Bad gas can do that, sure!
We are really limited to one topic per question. If your going to change this into a idle issue, I would need you to open another question.If you have any more questions on this, please feel free to ask. If you have any questions you would like to ask me in the future, you can just go here and request me if you like.http://www.justanswer.com/car/expert-jay1/Thanks Jay!
that is what it is now. even on park?
Lets please stick to our original topic.If you have any more questions on this, please feel free to ask. If your satisfied with my help, don't forget to press the ACCEPT button.Thanks Jay!
ok, well then what next. what should i try next for this issue so i can keep this to the idle issue.
If your talking about the vibration in reverse, I would run that tank out and try a fresh tank a super and let that go through the system, then see how it is. If you had gas in the car for 10 months and it was not treated, then it could be the cause of some of the vibration. It sounds like the idle is correct, and all mounts have been changed. Also, like I said before, if the mounts are after market they are stiffer and that could also contribute to some of the vibration. Reverse is a high torque gear and can give you a little bit of a vibration.Thanks Jay!
20 yrs experience with Nissan & Infiniti Trained & Certified.Currently still working for Dealer
ok, i will try this. i do apologize for talking about the idle, but you are the one that said that this could be the issue of this vibration.