My car Is leaking transmission fluid.
As I noticed, my car needed two new cv axles, both in front left and right. Everything was fine, everything ran perfectly fine. The day of that I changed my cv axles, i had to bang the passenger side cv axle with a mallet to take it out. I then inserted the new one. After that I was driving to school only to feel my transmission slip and my rpm not meeting up with my acceleration. We added oil and noticed it was leaking when I got back home from school. It only leaks when I drive the car. Not in park or off. We changed the seal but it still had no effect. Less of a leak yes but still leaking.
Experienced mechanics share their insights in answering this question :
If the output shaft seal (where the seal engages the inboard CV segment) is leaking even though the seal is new the possible causes of the leak are: wrong seal; seal is cocked in the bore, not properly positioned or was damaged during installation; the bushing or bearing supporting the inboard segment of the axle is excessively worn allowing leakage past the seal; or there is a groove worn in the seal surface. Both left and right seals should be changed of course. If you desire that this problem be diagnosed and repaired by a certified Mechanic, dispatched by YourMechanic right to your location, please request an axle shaft seal inspection/repair and the responding certified mechanic will get this resolved for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.
How to Identify and Fix Common car Problems ?
Our sources include academic articles, blog posts, and personal essays from experienced mechanics :
The transmission oil pan gasket is the most common source of a leak, but fluid may also escape from loose seals, damaged transmission lines or a cracked or punctured pan.
A transmission leak is a common occurrence that happens through excessive wear over time. The plugs could be loose or the pan could be punctured. Either way, the moment you notice transmission fluid, contact your local mechanic and have them inspect and repair your transmission fluid leak.
A transmission leak will not get better on its own. If it goes unchecked, vehicle operation will eventually be affected, and you may find yourself with an expensive repair. So, while it may be safe to drive with a leaking transmission, it`s not advisable, and you shouldn`t put off fixing the problem.
Faulty Transmission Pan or Gasket
The fuel pan gasket is the number one culprit if your vehicle`s transmission fluid leaks when your car is parked. Cars with automatic transmissions have a pan gasket designed to catch most fluids leaking from the engine.
Thankfully, this particular problem does not require a major repair. Your technician can repair the transmission leak by replacing the seals to fix the problem.
Silicone Rubber Adhesive Sealant uses only a bead of sealant to make the seal between transmission and pan. Although original equipment manufacturers use silicone sealant in these applications, most gasket types will work with these style pans as they are of the flat surface type.
Transmission fluid leaks will usually be reddish brown in color with a thin viscosity (new fluid) or brown with a thicker viscosity (old fluid). These leaks will typically be found near your car`s middle section.
Transmission fluid leaks
Check the level frequently and top off as necessary. Remember, a major loss of fluid can damage the transmission or leave you without the ability to get the car in gear.
At a minimum, you should expect your transmission rebuild seals to last as long as the unit`s original seals — that is, for about 100,000-150,000 miles. However, in order to achieve that kind of success with an overhaul kit, you have to be absolutely sure of the quality of the seals inside.
Although there are multiple places on a vehicle where transmission fluid can leak, the 3 most common include: Pan gasket. Cooler lines. Output, tail, or torque converter seal.
The cost to fix a transmission fluid leak in a vehicle can be as little as $150 to replace a seal and around $1,000 to for a new torque converter.
The cost to fix a transmission fluid leak in a vehicle can be as little as $150 to replace a seal and around $1,000 to for a new torque converter.
While it is not especially dangerous to continue driving with a leaking transmission fluid, it can cause catastrophic damage to your engine. As soon as you notice your car is leaking transmission fluid, you should seek to contact a certified mechanic to have your transmission fluid serviced.
If your vehicle mostly leaks while it`s sitting, your problem is most likely a bad transmission pan gasket or something of that nature. If it leaks more when the car is running and in drive or reverse, the problem is more than likely a hose or gasket in the pressurized system.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
My car is leaking transmission fluid – I can’t diagnose the leak
ANSWER : Based on the NHTSA database covering consumer complaints, as well as government mandated recalls and factory service bulletins, for your specific year, make and model, I do not see evidence of widespread complaints about transmission fluid leaks. Such leaks are, in fact, common in transmissions made by any car company, particularly if the transmission is older than say 10 years. There is a manual shaft seal, oil pan gasket, output shaft seals, case seals, torque converter seal (inaccessible) and so forth all of which are potential leak points on your transmission.
If you want to identify and resolve these leaks, certainly a certified Mechanic from YourMechanic could come out and perform a transmission leak inspection and let you know where the leak points are and what it will cost to resolve them.
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There is automatic transmission fluid in a manual transmission. Is it okay to leave or do I need manual transmission fluid?
ANSWER : This would depend on what the manufacturer recommends. Many manual transmissions do take automatic transmission fluid. If your transmission has ATF in it, it is very likely that it is supposed to have that in there. If not, it is likely that the transmission would not function properly with the wrong fluid. Many manual transmissions will also take engine oil as a lubricant. The best way to know for sure is to check your owner’s manual or call your local General Motors dealership to inquire.
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New cars don’t have transmission fluid dipsticks Transmission fluid changing
ANSWER : That’s a very good question. The reason they have gone with no dipsticks is because they don’t want people messing with transmissions other there at the dealership. Some cars went through that a couple of decades ago. They make it a very involved, convoluted process all through, in order to change the fluid on these modern cars. They have special adapters you have to put. Some of them have to have scan computers in order to read the data and what’s in there, and then be able to change it. A lot of these companies claim that this new fluid is the "lifetime" fluid.
Most new use synthetic fluid can last a long time but any fluid is going to get dirty and wear out over time. I would change it at least every 80,000 – 100,000 miles but if you’ve got one that is really hard to change, you are better off hiring a mechanic to do it.
On some of the cars, it would be too hard for the do-it-yourself because of all that equipment you need. The professional mechanics already have that. Just call any good mechanic, like one from YourMechanic, and they will be able to perform a transmission fluid service for you.
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How do I stop the transmission from leaking brake fluid in a 2002 Mitsubishi Lancer
ANSWER : Hi there. First off, the transmission and brake system are separate and utilize different oils. If you’re leaking oil from the slave master cylinder (which is a clutch component), it’s transmission fluid that might be leaking. If you’ve been told that this has been damaged, there really isn’t a way to stop the leak without fixing the damaged component. You might want to have a mechanic replace your clutch slave cylinder before it completely breaks.
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I pressed my gas and my car didnt accelerate. There is transmission fluid in my car and my car cranks great and runs great…
ANSWER : This kind of reaction is often a sign of low transmission fluid or a faulty transmission control solenoid. As you know, automatic transmissions use pressurized hydraulic fluid to change gears. Every time a gear change is required, the car’s computer activates a transmission solenoid, which directs transmission fluid into the valve body to engage the correct gear. When this is faulty or not working properly, this can cause a delay in gear shifting or in some cases cause the car to not shift at all. This type of problem is amplified any time the transmission is low on fluid creating a drop in hydraulic pressure. I would recommend having a professional from YourMechanic come to your location to diagnose and inspect your vehicle.
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Transmission fluid leaked while pulling a car out of mud
ANSWER : From the description you’re giving me, I’m not sure. I know many Fords, including my F150, have a circular seal type bell housing inspection cover near the transmission. Fluid pooled in this area generally indicates an engine oil leak from the rear main seal or a transmission leak from the front pump seal. The only way to know for sure is to have your truck’s transmission leak inspected firsthand by a professional. The team at YourMechanic is an excellent option since we make house calls.
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Why is my transmission fluid leaking?
ANSWER : Generally, there are only a few places for leaking transmission fluid to go to since it does not burn off inside the transmission, unlike motor oil inside an engine. You have already ruled out the possibility of an external leak somewhere because of the lack of any visible signs of leaking.
A ruptured modulator can allow the fluid to be sucked into the engine (this is uncommon), or the fluid may have leaked into the transmission cooler. Another possibility may be a leak that is only active when the vehicle is in use or during times where hydraulic pressure is present in the transmission, such as while driving.
Try looking underneath the car and clean the surface areas under the transmission with a brake cleaner to get rid of any grease or oil spots. After cleaning, take the car for a drive. When you return, look underneath the car to see if you can spot any visible signs of fresh fluid leaking from under the transmission.
It is recommended that you get a certified technician, such as one from YourMechanic, to come to your location and determine the cause of the transmission leak.
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Fuel EVAP line that runs under car is kinked how do I know if it is leaking? Also can I drive it like that if it’s not leaking?
ANSWER : Hi Ricardo. We answered your question earlier. However, if you didn’t receive the reply, here is what we stated earlier. In most cases, an EVAP leak will create an OBD-II trouble code. The best way to detect an EVAP leak is by having a professional mobile mechanic complete a check engine light inspection, they will be able to download the code and determine the source of the leak. That’s the best advice we can offer you. Thanks.
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