It only happens when I take my foot off the gas - if I touch the gas at all it goes away until i let off again. So far the PTU, rear differential and the rear axel all have been replaced (still under drivetrain warranty). I have noticed a loud hum coming from the rear end when I let of the gas at any speed higher then 10 mph. Don't leave that there - I'll take it to bits! Still making the noise.
San Jose California. Control Arm Bushing. Is your car making noise whenever you release the gas pedal, whether it is running or in neutral, and you want to know what is causing it? To verify, jack up the car. Differentials are complex mechanical elements and changing a gasket or pinion seal comes with a significantly lower cost than having to rebuild the entire differential or swap it out completely. Not changing the first gear lube between 3, 000-5, 000 miles: This interval is used by most axle manufacturers to mark the end of the break-in period. Share this post Link to post Share on other sites. Rear end makes noise let off gas to. Noise: Howl without whir or rumble while accelerating at any speed (gears previously quiet). The cause of such noise can range from a simple loose heat shield to a more serious issue like a failing muffler. What does a catalytic converter do? Studies from Los Angeles influenced him to work on a device that could mitigate the effects of smokestacks and automobile exhaust on the environment. Went to the snowboard resort which is 3 1/2hrs away for the past 2 days and after cruising then i let the gas go I feel a small jerk and hear 'clunk'. New noise, a honing sound from the rearend when let off the gas pedal. A honing sound thats coming from the rearend of my 83 300cd started just a couple of days ago, I put new half shafts on 5 months ago and it doesnt sound like that is the issue.
And Idk if you can really see it but it sits in between both u-joints. If the whine goes away with very light throttle, the bearing is probably not wasted. Pump your floor jack to raise your car until you get the desired height. Firm feel front hanger using top position to lower car 1. Rear end makes noise let off gas lines. The only place I hear any noise while rocking it back in park it from the transmission. My bet is ring/pinion wear causing noise... you could dump the fluid, and fill with 75w140 synthetic and see if the sound goes away... __________________.
Cause: Loose pinion bearing preload. This could run the bill up from the $200-$400 range to $600-$800. The problem is this is dd and I can't afford to let it sit while I figure this out. Then again, the np203 I probably bigger and heavier than a newer one. A whirring noise when decelerating – May be caused by loose or bad bearings in the pinion gear or ring gear. '01 SL500 - 99k(km) - dad's (OC-102, 000km). In response to the above comment, my 2. Troubleshooting Noises When Releasing, Taking Foot Off Gas Pedal. I have seen it go on days and days while the victim thought his vehicle was about to bite the dust. I have fond memories of sweaty oily saturdays and spewing R12 into the air. '83 300D, 126K miles. I just didn't know if these AWD's make some noise or not, our 2004 tahoe is AWD, but doesn't feel like this thing at all-. Hey guys, just bought my 03 SSS. What is the power output in these systems? Location: Jasper, IN.
Sounds like a ring and pinion noise. There is a honeycomb block inside the housing. Just ask for the ASTM test performance data of your oils producer. Transmission: TH350 / Auto. I had a friend help also that's done it before but it was probably the worst 2 hours of my life. Howling when letting off gas at 55. I have a 3 inch Lift with 31s and I get the same problem. Cause: Damaged or broken ring gear tooth or teeth. I suspect possibly a worn driveshaft U-joint or rear diff bearing. Knock sound when letting off-gas. Last edited by seed60; 02-23-2011 at 08:36 PM. What happens when the hot differential meets cool water is that a vacuum phenomenon appears that rapidly sucks air or water inside.
Drain the diff as outlined in your other thread! Hearing strange engine noises when releasing the gas pedal can be worrying and indicate a potential problem with your vehicle. Types of Differentials in Automobiles. A wheel bearing will usually fail due to pitting or small damage on the surface of the rollers or the bearing race. Rear end makes noise let off gas station. Engine misfire: An engine misfire can cause a popping or pinging noise when you release the gas pedal. The engine is running rich if it is getting too little oxygen. Essentially gear oils break down when water is added into the mixture.
Communicate privately with other Tundra owners from around the world. What Are The Symptoms of a Bad Rear Differential? Transmission: WC T5. I did notice some interesting things however. I have taken the rear axle, th400, and np208 tc out and had them all rebuilt.