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Scott Holmes
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  • Frisco City, AL
  • United States
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720 Cab Noise

Started this discussion. Last reply by Scott Holmes Nov 14, 2015. 7 Replies

Hi guys, thanks for having me aboard. I have a bone-stock '84 regular cab that runs very well. However, there is a terrible low-frequency drone sound in the cab when driving or idling. It is worse at…Continue

 

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Scott Holmes replied to Scott Holmes's discussion 720 Cab Noise
"Cab noise update: Noise was coming from multiple areas. The problem while driving was happening at 45 mph+. We put the truck on the rack this week, and found a problem at the rear diff yoke. The u-joint cup was a loose fit on one side, causing the…"
Nov 14, 2015
Scott Holmes liked Gene Bamba's photo
Nov 7, 2015
Scott Holmes replied to Scott Holmes's discussion 720 Cab Noise
"Thanks datzenmike for the ideas. I will check those this week when I can put it on the lift!"
Nov 1, 2015
datzenmike replied to Scott Holmes's discussion 720 Cab Noise
"Unlikely the driveshaft if it does it at idle. Hole in muffler. Not likely forward of it or would be loud tic sound. Look for anything near the exhaust pipe or where the pipe would move and come into contact with the body. Transmission…"
Nov 1, 2015
Scott Holmes replied to Scott Holmes's discussion 720 Cab Noise
"It's an automatic. You think it may be torque converter vibration?"
Oct 31, 2015
channing replied to Scott Holmes's discussion 720 Cab Noise
"Does it go away when pushing in clutch?"
Oct 31, 2015
Scott Holmes replied to Scott Holmes's discussion 720 Cab Noise
"Thanks, Channing. Drive shaft is a 2-pc unit, hanger bearing is new, u-joints are fine. The drone sound happens even when in "park". That's what is so strange to me. Thanks for ideas!"
Oct 31, 2015
channing replied to Scott Holmes's discussion 720 Cab Noise
"If you have 2 part driveshaft rubber donut is toast. Option 2 is universal joints worn out or combo of both"
Oct 31, 2015
Scott Holmes posted a discussion

720 Cab Noise

Hi guys, thanks for having me aboard. I have a bone-stock '84 regular cab that runs very well. However, there is a terrible low-frequency drone sound in the cab when driving or idling. It is worse at midrange and lower rpm's. I have tried to pinpoint the sound by manipulating the exhaust with a piece of pipe while idling. I have also looked at the motor mounts, and they look good. The engine is not shaking or doing anything crazy. Any ideas?Thanks in advance!See More
Oct 31, 2015
Scott Holmes left a comment for Tommy Perkins
"Hey Tommy, I am in Monroe county, Alabama, about 3 1/2 hours from Columbus area. That is a really nice truck you have!"
Oct 30, 2015
Scott Holmes is now a member of 720World
Oct 30, 2015

Profile Information

What is the main reason you'd like to join 720World? (dont just say "because I own a 720", if you do this you will not be approved)
Interested in tech info and the knowledge of the group in maintaining my 720.
What is your profession? (not required, just if you want to share your knowledge)
Self-employed... Dry cleaning
About Me:
Self-employed jack of all trades. I live in Monroeville, Alabama
Website:
http://igofers.com
How many 720's or other Nissan trucks do you own? What years and types?
1 1984 2wd Regular cab auto trans. 118k original miles. I am 3rd owner.
What modifications have you done to your truck(s)
No mods except stereo.
What modifications do you still plan to do to your truck(s)
Seat replacement and possibly a stake body.
How many miles would you travel to attend an all 720 truck meet?
100

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