Q: RPM fluctuating

Nissan has a Technical Service Bulletin (TSB) to cover most driving problems with the tires or alignment. The TSB NTN08-097F, dated 11/21/2012, goes through various checks for alignment and wandering problems. Most likely the erratic steering is caused by what...

I would say the tensioner (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-drive-belt-tensioner) was overlooked on the last repair and the oil pressure switch may have been damaged in the repair process. I would recommend having the repairs done, but ask for the old parts to see...

Hello and thanks for your question. Check the harness to the MAP (Manifold Absolute Pressure) sensor (https://www.yourmechanic.com/services/manifold-absolute-pressure-sensor-map-sensor-replacement) for voltage. There should be a 5 volt reference that supplies power to the sensor. If you do not have power to the...

Hi. When your Check Engine Light is blinking during acceleration, this usually means that the engine is misfiring in more than one cylinder of the engine. The by the engine misfiring, it causes the computer to adjust how the engine...

Hello - as you noted, the first thing to check is the fuse for the HVAC fan of course. The next step is to check to see if the fan works at any speed, or just Low or Medium. If...

Hello, thank you for writing in. The belts are drive belts designed to use engine power to utilize other accessories or parts. With the information given it is impossible to tell you what kind of belts they are. The ones...

Hello - the front suspension on your Altima utilizes a lower control arm (https://www.yourmechanic.com/question/when-replacing-ball-joints-can-you-just-replace-the-ball-joints-or-do-you-have-to-replace-the-whole-control-arm-by-debra-l) (with a pressed in ball joint), and a strut/spring assembly. The ball joint comes pressed into the aluminum lower control arm, and is generally not available...

Hi there. At first glance, I would assume the grinding noise is caused by a damaged wheel bearing. When the wheel bearing is starting to fail, it looses lubricity; which causes metal-to-metal contact and a grinding noise is often the...

Try disconnecting the negative battery terminal for 10 minutes or so. Reconnect the battery and start the vehicle. If the check engine light comes on, then further diagnosis (https://www.yourmechanic.com/services/check-engine-light-is-on-inspection) will need to be performed. If any electrical or electronic components...