5 Posts . You must check the rear of the vehicle for transmission leaks. The transmission in your vehicle requires special tools to check and fill the transmission fluid level. Contact a shop to remove the transmission and replace the cooler. I think one of my ball joint press pieces may work but if not ill look for a pvc pipe . Has a 3.4L V6 with 107K miles. YourMechanic’s technicians bring the dealership to you by performing this job at your home or office 7-days a week between 7AM-9PM. So I'm thinking the leak is coming from the transfer case side of the U-joint, because the prop shaft doesn't contain any ATF, or other fluid, as far as I'm aware. © However, you could still lose this fluid if a leak were to occur somewhere in the transmission system. The statements expressed above are only for informational purposes and should be independently verified. Prev. Lower the vehicle back to the ground. Can seals be fixed on the u-joint or do you have to replace whole drive shaft? Sometimes The slip joke leaks out of the vent hole, Other times it leaks around the cap. Astro - Chevrolet :: 1989 - Leaking Red Fluid Drips From U-joint? You've probably seen it before: a truck on the side of the road, with the drive shaft lying under the vehicle, no longer attached to the transmission or rear axle. Transmission fluid leaking. You can be sure about it when the leakage occurs in the rear of the transmission. Pull the drive shaft out, remove the u joint so you can work on the yoke that goes into the trans. Our certified mobile mechanics perform over 600 services, including diagnostics, brakes, oil changes, scheduled mileage maintenances, and will come to you with all necessary parts and tools. This is the ultimate failure mode for a universal joint – literally breaking, and allowing the drive shaft to drop to the pavement, no longer transferring power. Travis was great, honest and very friendly. you could have an output seal that has failed adn that could put in that situation. It has most likely also leaked into the radiator. My biggest concern is a transmission fluid leak from the rear where the yoke leaves the transmission. no signs of leaking anywhere else. I did a few searches and got some info but nothing specific enough. Change Your Fluid: Are you changing your transmission fluid often enough? yes the fluid can come from where the half shaft enters the trans-axle. Since the bearing portion of each universal joint twists a small amount with each rotation of the driveshaft (but always in the same location) the grease can evaporate, or be thrown out of the bearing cup. Repairs covered by 12-month/12,000-mile warranty. Not changing your fluid per your owner’s manual’s recommendation is often cause. If this does not work then you can open the hood and use a... Universal joints (“u-joints” for short), Servicing, or greasing the u-joint bearings. Transmission fluid leaking from the rear of the transmission is often the result of a badly worn universal joint. Jump to Latest Follow 21 - 40 of 60 Posts. My 89 Astro van is leaking red fluid when parked uphill (slightly) that drips from the u-joint closest to the transmission and only from the part that is in the yoke that goes into the transmission. If fluid is suspected of leaking from the transmission, the transmission should be inspected to determine the source of the leak, and the appropriate repair made. At each end of the propshaft there is a universal joint (UJ), which allows the rear axle to move up and down in relation to the gearbox without bending or snapping the shaft. Hello. I've posted some rough measurements in the pictures below. I purchased a classic 1969 van.Mario went through the vehicle inside and out.Mario was professional and knowledgeable.I recommend Mario services to anyone. I have a 2007 chevy silverado with 70K miles. It does not have a dedicated dipstick to check transmission fluid level. Vous pouvez modifier vos choix à tout moment dans vos paramètres de vie privée. Make your car last longer by checking your motor oil, parking in the shade, and keeping it clean. Thanks! Découvrez comment nous utilisons vos informations dans notre Politique relative à la vie privée et notre Politique relative aux cookies. This is not a leak around the trans filler tube, as the fluid actually comes out from the top. On time Posted by jonnyreb2008 on Feb 19, 2011 I believe its a worn rear seal. Made with ♥ in Silicon Valley. Transmission fluid leaking from U-joint? The squeak usually cannot be heard once the vehicle moves faster than 5-10 mph because of other vehicle noise. You will see a round plug in the yoke it looks like a frost plug. If you are refering to the front u joint, it is probably the transmission (think that it is called the) tailshaft seal. The fluid is at the correct level, but when running the car, the fluid will rise and pour out from the top of the trans filler tube. If it is leaking through that hole and onto the U-joint then there may be a problem with some internal seals and it is likely the yoke itself is worn allowing the trans fluid … One way to determine whether or not your car is leaking transmission fluid is to place some newspaper, a large sheet of aluminum foil, or a clean piece of cardboard under your car when it's parked for the night. Top 4 Reasons Why Your Transmission Fluid is Leaking Check Fluid Color: First, let’s make sure that it is in fact Transmission Fluid that is leaking from your car.Make sure the color of the fluid is orange, red, or brown. When damaged, the output shaft seal causes leakage of transmission fluid from the rear end of the vehicle. The front seal is usually made of rubber, much like the rubber in a windshield wiper blade. Universal joints (“u-joints” for short) are components of the driveshaft assembly fitted to most rear-wheel drive trucks, four-wheel drive trucks and SUVs, or off-road vehicles. Jul 26 2012, 3:31am. Try putting in the key and only turning it to the first position before the key turns on and try to shift the shifter to neutral. Once the problem has been diagnosed, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. If you have an older pickup, then you may have a vacuum line to the back of the transmission that goes to a control valve and sometimes these valves leak and the engine will suck in transmission fluid into the vacuum line and into the engine. Transmission Fluid Leak at the Ujoint? The most common leaks are from one of the seals. Discussion Starter • #1 • Mar 3, 2010. Transmission fluid leaking from the rear of the transmission is often the result of a badly worn universal joint. Slide the jack away and off to the side. Open the hood and locate the transmission cooler. A badly worn U-joint causes vibration in the tail shaft bushing and damages the output shaft seal. And unless you dismantled part of the transmission, you did not even see the output shaft, much less touch it. I'd probably change out the driveshaft u joint and yoke as well and put jbweld on the freeze plug of the joint to make sure it doesn't leak out that either. The fluid is leaking out of the driveshaft yoke at the u-joint, not down from the rear housing seal. Dodge A108 Van - Pre-purchase Car Inspection - Carson, California. Transmission F luid Leak. Your mechanic should, when possible, select quality replacement u-joints with a grease fitting, allowing for long-term preventative maintenance, and enabling extended life of the u-joint bearings. If your car has all- or four-wheel drive and there is noise or fluid leaking from the transfer case, consider replacing the front output shaft seal. The squeak is a warning that the universal joint should be serviced by a professional mechanic. 2003 Mustang GT - Eibach Springs - Flowmaster 40 Series - Custom Dyed Interior RAL 9005 - 3.73 Gears . I dropped the drive shaft thinking wrongly that there would be a bad seal where i thought the yoke went into i thought a second piece, but it is all one piece with a collar. Please see our, Toyota Corolla - Check Engine Light is on - Santa Ana, California, Great experience ... Leaking Fluid at U joint? Most cars have several different types of fluids, so it's important to try and determine where the leak is coming from. Jun 29, 2011. This will be a higher frequency vibration than that of an out-of-balance wheel for example, since the driveshaft turns 3-4 times faster than the wheels. At the end of aXXXXXrecently, I noticed transmission fluid leaking from the universal joint (at least I think, it is the U inbetween the transmission … How would transmission fluid be leaking from inside the rear transmission yoke and dripping off the u-joint on a 93 chevy 1500 silverado 2wd 4.3 litre? Fast, free online quotes for your car repair. LEARN MORE. The bearing becomes dry, metal-to-metal contact is made, and the u-joint bearings will squeak as the drive shaft rotates. Highly knowledgeable mechanic, Cadillac Escalade - Car starts and then dies - Menifee, California, Ram 1500 - Vehicle Drivetrain - Snellville, Georgia, Eliud was punctual and knowledgeable about my vehicle. The most popular service booked by readers of this article is Vehicle Drivetrain Inspection. Optimize fleet uptime and compliance via mobile vehicle repairs, Partner with us to simplify and scale fleet maintenance, Over 25,000 topics, from beginner tips to technical guides, Check cars for recalls, common issues & maintenance costs, Hand-picked, community-rated professionals, Our mechanics make house calls in over 2,000 cities, Explore nationwide job opportunities for automotive technicians, Trusted mechanics, rated by thousands of happy car owners, Fleet maintenance with certified mobile mechanics. Be sure that you check to see where the red fluid is actually leaking from by checking the transmission fluid level, and power steering fluid level. Transmission fluids are also clear in color and are usually found in Japanese, and European cars. Servicing, or greasing the u-joint bearings, won’t reverse damage to the u-joint, but may extend its life somewhat. There are a lot of things that can cause a transmission fluid leak, including an impact on your car, not changing the trnsmission fluid often enough and sometimes even just normal wear and tear. I replaced the transmission in a '94 suburban drove it for 2 weeks, no problems. My 89 Astro van is leaking red fluid when parked uphill (slightly) that drips from the u-joint closest to the transmission and only from the part that is in the yoke that goes into the transmission. As the engine achieves higher degrees of torque (torque is the rotational power of the engine), the gears in... Every driver wants a car that lasts a long time. It sounds like your transmission is failing. A leaking manual transmission doesn’t have to be a big problem. The front seal keeps transmission fluid from leaking out where the torque converter mounts to the transmission case. I looked on the internet and the u-join next to the transmission is lubercated by transmission fluid. Common signs of a faulty u-joint include a squeaking noise, clunking sound when shifting, vibrations in the car, and transmission fluid leaking. the half shaft or cv joint has now fluid in it, there is a grease in that joint so that is not your source of a leak. It is where the driveshaft goes into the rear of the transmission. This redness is the color of the transmission fluid. An An automatic transmission allows a vehicle engine to operate within a narrow speed range, just like a manual transmission does. Also, while you have the t-case out I would just replace the two seals on it anyways since they're like 10 dollars each, as well as the two seals on the transmission on that side. I wan't to change the U-joint on both ends of the prop-shaft, but I'm not 100% what U-joint to get. The worn universal joint is now causing damage to other components of the vehicle – including the transmission. Some propshafts also have a universal coupling fitted at the centre. How to check transmission fluid level. You can normally wait until you drive 100,000 miles before you need to change your automatic transmission fluid. This noise usually indicates that the universal joint bearings have enough excess clearance to allow the driveshaft to rotate slightly, then come to a hard stop, when power is reversed. There is no way that a u-joint can be leaking tranny fluid, they are sealed so it must be an external leak, if it is the yoke that is leaking through the plug on the inside you need to replace the yoke or have it professionally resealed, plus Kelly might also have a good point that it is just the tranny output seal and the fluid is slinging off the outside of the yoke. Output seal that has failed adn that could put in that situation leaks transmission fluid leaks usually! Fluid leaks cause low transmission fluid from the top a narrow speed range just... 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