Odd noise from the Lt77 or 230 - Defender Source
Defender Source  

Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions

Join the Defender Source Community Today

Thread Tools
Old July 22nd, 2008, 08:21 AM
tomaco1's Avatar
Status: Offline
83 110
Join Date: Oct 2007
Location: Long Island, New York
Posts: 3,378
Odd noise from the Lt77 or 230

Sometimes when I shift or am coasting and then give it some gas, I get a strange noise from what feels like is under my feet. It sounds almost like wires between two pulleys are loose and flapping around a bit? I changed the tranny mounts yesterday, which helped some, but I still get it now and then.
Any input would be greatly appreciated!

Reply With Quote
Old July 22nd, 2008, 10:51 AM
Roadsiderob's Avatar
Status: Offline
Robert Dassler
1994 D90
D-90 Source Vendor
Join Date: Apr 2004
Location: Albuquerque, NM, USA
Posts: 987
How much, if any lift are you running? First I'd get a magnetic angle gauge from the hardware store and measure your u-joint angles. If they are over 7 degrees you may get the coil springs to vibrate at certain times-usually on float when you're not on the gas, but not decelerating either. It sounds and feels like hitting the rumble strip on the side of the highway. If that looks ok and it seems like it could be one of the gearboxes, I'd try to narrow it down a bit further. Does it do it the same in all gears and reverse? Does it do it the same in low range? is it related to road speed? Is there metallic particles in the oil? Early LT77s have really small bearings on the countershaft that will fail and cause the shaft to shift. What are the serial # on your gearboxes? What engine is in your truck?
Rob Dassler
SWR Automotive
505-872-7818 (shop)
Reply With Quote

Lower Navigation
Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Transmission noise help... reb78 Defender Technical Discussions 5 September 22nd, 2008 04:28 AM
Noise from engine--curse of my existence Davis Defender Technical Discussions 25 June 24th, 2005 03:27 PM
Curious knocking noise mikeslandrover Defender Technical Discussions 6 March 29th, 2005 06:09 PM
LT230 noise? Chaucer Misc. Chit-Chat 5 March 19th, 2005 02:59 PM
whistling noise from engine jstrong98 Defender Technical Discussions 2 December 14th, 2004 11:37 PM

All times are GMT -5. The time now is 12:22 AM.