Nissan Sentra 2007 problems with the tension pulley

ANSWER : Hello, thank you for writing in. There are a few things you need to look into. One, have you been buying the same brand of tensioner, and have they been warrantied? You may want to make sure you are getting a higher quality tensioner to begin with, or at least make you can get your money back for them. Secondly, you should make sure that the mounting bolts are not stripped or loose allowing the tensioner to rotate or move. It needs to be secured tightly. There are other pulleys in the system that the drive belt depends on. Make sure the idler pulley, and all of the other pulleys connected to the respective components are working as designed. For more help, contact our service department to schedule an appointment.

ANSWER : To answer your most important question first, you can absolutely specify that only genuine NIssan OEM dealer supplied transmission fluid (as well as any applicable filter) be used in your vehicle. Generally speaking, OEM parts are preferred and, in many cases, are the only way to avoid headaches. If you are providing the fluid, you can simply eliminate the "parts component" of the quote (there is a delete all parts option in the quote, leaving you only with labor charges). If you desire that YourMechanic procure the fluid, it might be easier to simply call in your service request and just make it clear on the phone that only OEM Nissan fluid is to be used. To obtain service, please call YourMechanic’s request for service line at 1-844-249-6752. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

ANSWER : Hi there – I would start by doing a visual inspection of the serpentine belt, and the pulleys – are they visually in line? If not, which pulley is out of line in the direction of the engine cover? Are there bushings on the alternator mount which have softened, and are allowing the alternator to "give" such that the serpentine belt is close to the cover? The crankshaft pulley is not likely moving at all. Is the cover where the rubbing occurs coming loose, and moving into the serpentine belt? For assistance, I would recommend a serpentine belt replacement by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.

ANSWER : Hi there. In this case, it’s likely that one of the pulley’s is frozen or the bearings inside the water pump are damaged which is the source of your problem. It’s typically a good idea to replace the water pump, belts and pulley’s to resolve this type of problem.

ANSWER : Hello. You may need to approach this issue from two different angles. One of which is to figure out if the tensioner is mounted incorrectly. Make sure the retaining bolt or screws are dry and tight. If the pulley wiggles when the vehicle is off, or has any excess play, this issue isn’t necessarily the engine. It could be that the drive belt tensioner is loose. This may be due to the components being stripped, the bolt or screw being stripped, or various other damages. If the tensioner pulley is on tight, the issue may be excessive engine vibration. This may be due to running issues, or bad motor mounts. The first thing to do is check the durability of the new tensioner and its installation. If the tensioner seems to be mounted correctly, then turn your attention to checking for excess engine vibrations.

ANSWER : The only way for the CV Axle Shaft to be swapped from the Nissan Altima and the Nissan Sentra is for both cars to have the same transmission and the length of the CV Axle Shafts are the same with the same spline count. Then the CV Axle Shaft can be changed. If the vehicles both have manual transmissions or automatic transmissions, then the shafts are the same with the same transmission type. If you need further assistance with your CV Shaft swap, then seek out a professional, such as one from Your Mechanic, to help you.

ANSWER : Hi, thanks for your question. For your 2009 Honda Odyssey, the tensioner and tensioner pulley are one unit. They make up what is called the tensioner assembly. This tensioner assembly has two pulleys located on it and they can be replaced separately.

If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to perform an inspection and repair for you.

ANSWER : At the next cold start, try this: Take a spray bottle with some water and spray the belt then start it. If you hear the noise, then the problem may not be with the belt or tensioner. If you do hear it, then it’s possible that one of the pulleys (a/c,water pump,etc) may be slightly glazed or out of round. It’s also possible that a bearing, such as in the water pump, alternator, or a/c compressor clutch may be the issue. Sometimes a bearing that is on it’s way to failure can squeal when cold until it warms up. Alternator bearings are a common source. A mechanics stethoscope may be a good tool to locate a squealing sound. Since the noise is primarily on a cold start, the vehicle may need to sit for several hours or even overnight to get the noise to occur and found with the stethoscope.