hi, i just recently purchased a 89 toyota truck that ran great for a few week, but lately, the truck has been making a howling noise when i let go of the gas pedal. the noise gets louder at the car slow down, but once i step on the gas again, the noise is gone. the car drives fine, but the noise is beginning to scare me a bit, don't want to get stuck somewhere.
i thought that the noise was coming from the diff, so i change the fluid in it, but the problem is still there. i've also replace the transmission oil already. anyone have a similar problem before? could it be that the driveline needs to be rebuild? is the drive rebuildable at home? any help would be great. thanks
You haven't run over a dog or wolf anytime recently have you?
what kind of howling was it anyway...like friction howl...or a howl somthing like the wind could make? I'm thinking maybe it could be somthing that is loose, and when you let of the gas the torque is gone, and it is being sputn freely kinda?? i dunno i know that my go-kart has makde NASTY howling noises because the clutch is worn and gets a wobbily spinning problem , where somthing without a bearing, kinda grabbs the axle and it wobbles while spinning quickkly slowing it down, at the same time producing a crazily loud howl. I think it could be a bearing or somthing that could need oil or replacement, because it kinda sounds like i said as if when the stress is relieved from it it might wobble a little bit more, enough to howl. I don't know a whole lot about cars and trucks, and i wouldn't be worried by my response but it's my 2 cents. Hope i might have helped...
driveshaft maybe?? could be where it connectss to the diff, or maybe the universal joint in the shaft is worn?? (just thoughts)
Sorry, my knowledge on Toyotas is not up to snuff (yet), but in big rigs the howling you are talking about would indicate too loose of setup on the pinion in your diff. You are going to have to get a spotter to listen to see where the howling is coming from. If it is from the rear axle, chances are that is your problem. Another way would be to depress teh clutch while it's howling, or if it's an auto tranny shift into neutral. If it stops it is defilately drivetrain. Might be a u-joint, although I haven't heard of that. Easy to check-grease all the u-joints until they squeeze out grease from all four caps, then test ride.
I could be wrong, though. Check with the knowledgable people here on the group. They've helped me in the past.
Originally posted by D'mon Easy to check-grease all the u-joints until they squeeze out grease from all four caps, then test ride.
D'mon
If you do that, maybe it would be a good idea to grease each spot seprately and keep track then you'll know which one it was for sure. Other wise if it happenes again you won't really know what's happening, and have to grease everything over again. Just a thought.
Good thought. Of course, usually you can tell a bad u-joint with a good shake but this is a unique situration. I'd try "spotting" the noise first to get a general location, then work from there.
the noise is getting louder and louder as i drive it more often. the truck still makes that noise when the car is in neutral. also no dog underneath the bed . any other idea?
The noise is coming from your Differential, make sure if its coming from either the left side or right side. Your gonna need to replace your axle bearing. Universal joints makes clanking sound, bearing noise makes howling sounds.
thanks for all the help, it turn out to be the part in the front of the diff. the part where the driveline is attach too. the nut was loose. problem solve!!!!
Originally posted by vulteiv1 thanks for all the help, it turn out to be the part in the front of the diff. the part where the driveline is attach too. the nut was loose. problem solve!!!!
You mean that I was correct?? was I?? Cause if i was that's cool... I don't even have a truck yet.
uhh...it couldn't be to hard... it's just gears placed inside a metal housing...right? i don't think you have to align anything but that's just a guess....
what are you rebuilding exactly?? your post is a little sketchy and i didn't quite read it right i guess...
[QUOTE]Originally posted by Figit090
[B]uhh...it couldn't be to hard... it's just gears placed inside a metal housing...right? i don't think you have to align anything but that's just a guess....
If you installing a Ring gear and Pinion you do have to align it properly. And this is not for an amateur, if you have'nt done this kinna work better take it a differntial specialist. Now if you bought a complete(whole differntial/rear end) then that will be an easy bolt on.
....sorry, i think i meant in terms or ligning it up w/the rest of the truck so it tracks straight, or any little adjustments....but i dunno....oh well i kinda confused myself
I just wanted to add an FYI. My 1991 4Runner was doing the exact same thing as was originally posted...loud howling noise, especially at higher speeds when the gas pedal was released. I thought that the noise might have been coming from the differential, but to make sure, I jacked up the rear, put it in gear, and got the wheels spinning 30 mph+ while I had someone else crawl underneath and listen. The noise was coming from the passenger rear side, right near the wheel. Come to find out, it was the axle bearing, where the axle and wheel cylnder come together. It wasn't hard to remove the wheel and axle, but unfortunately, the bearing requires the use of a press for removal and installation. The bearing was $55, and it's currently at the machine shop ($45 to have the bearings swapped). Hope someone finds this info useful.
Originally posted by rightshoes I just wanted to add an FYI. My 1991 4Runner was doing the exact same thing as was originally posted...loud howling noise, especially at higher speeds when the gas pedal was released. I thought that the noise might have been coming from the differential, but to make sure, I jacked up the rear, put it in gear, and got the wheels spinning 30 mph+ while I had someone else crawl underneath and listen. The noise was coming from the passenger rear side, right near the wheel. Come to find out, it was the axle bearing, where the axle and wheel cylnder come together. It wasn't hard to remove the wheel and axle, but unfortunately, the bearing requires the use of a press for removal and installation. The bearing was $55, and it's currently at the machine shop ($45 to have the bearings swapped). Hope someone finds this info useful.
I also had the same howling problem with my 91 4-Runner and changed the rear wheel bearings this weekend. You can always jack up the rear of the vehicle and see if the rear wheels have excessive side to side play. If you need to change the wheel bearings, first remove the axels from the vehicle. You will notice that there is a c-clip, a bearing retainer and the wheel bearing. After lots of cussing, trying to press the axel out of the bearing and retainer I spoke with a Toyota mechanic. Take a dremel with a cut off tool and make a slice on either side of the bearing retainer. Then take a chisel and crack it. Once the retainer is off, you can press or knock the axel out of the bearing and backing plate. After that you are home free. I just used a punch to install the bearing and retainer. No press needed for the install.
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.
ToyotaNation.com is an independent Toyota/Lexus enthusiast website. ToyotaNation.com is not sponsored by or in any way affiliated with Toyota Motor Sales, USA, Inc. The Toyota, Lexus and Scion names and logos are trademarks owned by Toyota Motor Sales, USA, Inc.
. any other idea?
i kinda confused myself
Linear Mode
