So this 1997 Nissan Altima came in with a really bad engine noise. At first I thought it was the alternator but it turned out to be something else. You’ll have to watch the video to find out what. The purpose of this video is to show a logical method of finding an engine noise like this. If it’s a rotational noise like this was, I like to start by removing the drive belts one at a time. If you remove all the drive belts and you still hear the noise, it’s something inside the engine. Could be the timing belt or chain. Either way, you’re going to have to dig deeper if removing the belts doesn’t reveal the source of the noise. Below is a link to a video I did on finding noises that may also help you. Along with an article I wrote about the same topic. So if you have an engine noise you can use that information to help you find the source.
Useful links.
Finding Noises Video: http://www.youtube.com/watch?v=6mpNRJ7m-c8
Finding Noises Article: http://www.ericthecarguy.com/faq/diagnosing-noises-in-your-car
Misfire Diagnosis on this engine: http://www.youtube.com/watch?v=V43OTGPxYc0
Intake gasket replacement Part 1: http://www.youtube.com/watch?v=GKFJxnn4IIQ
Intake gasket replacement Part 2: http://www.youtube.com/watch?v=L_G2BE0iYnE
Tools.
1/4 Screwdriver bit: http://www.jbtoolsales.com/sk-hand-tools-81841-bit-slotted-screwdriver-1-4-x-1-4-shank/#oid=1002_1
Discussion about this video: http://www.ericthecarguy.com/kunena/18-The-EricTheCarGuy-Video-Forum/50187-how-to-find-engine-noises#91831
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Stay Dirty
ETCG
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Great video. Subscribed!
Why not just us a stiscope?
You are providing such a valuable service to the world. Thank you, Dr Eric!
I have the exact same noise in my Volvo S80 from 2000. I have suspected the alternator myself but after this video I understand that it can be anything else nearby. Thanks Eric you’re best. Greetings from Sweden.
Nice vedio eric godbless
Damn he's good! This was the exact same noise my 2002 Civic EX was making, turned out to be an 18 year old A/C compressor.
Concise instructions, visually easy to learn, and very well spoken. Thanks Eric, you're a legend!
Have you seen this device in order to find noise sources: https://www.youtube.com/watch?v=NacChLPI7tY
You over tightened the spindle nut on the idler wheel bearing and pretty soon the belt will burn through (most likely on a -20F day..LOL)
Thanks for putting driveway diagnostics videos up. It seems that with your video the only way crooked mechanics can rip people off is by NOT telling the customer whats really wrong with their car.
I didn’t expect the engine to be so clean. From the outside of the vehicle.
Thanks Eric! I have a Toyota Corolla that has an odd whiny noise. Will take apart some items like you said. Hopefully, it isn't gonna be bad. Blue skies!
Old timer taught me the best way to diag alternator pullys, disconnect the connector and listen for a pitch change. Blew my mind lol
Eric I have a problem a noise coming out of the Elgin or transmission wen I accelerate for a moment
When I stand close to my car I can hear it making noise, I’d be worried if it didn’t cause it’d mean money out of my pocket, lol
You could have easily verified that it wasn't the alternator by:
1. It was the easiest solution.
2. It was the first guess.
😉
Good video. My 97 maxima is making an identical noise, but after changing the idler pulley, it's still making that same exact same noise! Frustrating
It's the rack and pinion
I am JP from Australia, n have a noise coming from the ENGINE when it is IDLING but stops when it moving > i have shown it to few mechanics, I have a TOYOTA YARIS 2006 1.3 Lt engine auto 5 dr.
ticking noise dodge journey 2012 sxt any help??
isn't a noise you don't hear a lot better?
Sounds like an overnighted timing belt
Thanks Eric. I jumped the gun, immediately assuming it was the alternator. Your extra effort to find the true cause of the noise was very helpful and reminded me to do my due diligence before throwing parts at a problem.