Jeep grand cherokee leaking

Jeep Grand Cherokee: Transmission Fluid Leak Causes

If you’ve found red fluid under your Jeep Grand Cherokee, you probably have a transmission leak. A transmission leak is a big deal. If you let too much transmission fluid leak, the transmission will begin to slip, which can quickly cause long term damage.

Unlike oil, transmission fluid is flammable, and will flash if it hits the exhaust manifold. If it is leaking there (usually out the dipstick) it should be dealt with immediately. Thankfully, this scenario usually happens only while towing or if the transmission has been overfilled. Here’s a great resource on ATF flammability.

If your Grand Cherokee is slowly leaking transmission fluid from the pan directly onto the ground, the transmission leak is as serious as when it leaks onto the exhaust. You should still deal with it right away.

Leaking Transmission Causes: Jeep Grand Cherokee

Here are some of the most common places that your Jeep Grand Cherokee may leak transmission fluid from.

1. Transmission Pan/Gasket

The transmission pan takes a lot of abuse over the years. It is always low and close to the road. Eventually a rock or other type of road hazard can damage it to the point that is no longer sealed.

The transmission gasket is another point where the transmission can leak a lot of fluid in a short amount of time. The gasket can get brittle with enough time and heat applied to it. Or, it could have been damaged if you’ve recently had your transmission fluid changed.

Another thing to look for, particularly if you’ve recently had your transmission fluid changed, is the bolts that connect the pan to your Grand Cherokee’s transmission. If they weren’t properly torqued, then tightening them would definitely fix the leak.

Also, look at the drain plug bolt (if applicable). Is it loose or stripped?

2. Leaking Torque Converter

As the torque converter spins, it pumps transmission fluid into the main part of the Jeep Grand Cherokee’s transmission. If the torque converter has developed a crack or has internal damage, transmission fluid will leak from it.

3. Line Issue

There are lines that connect your transmission to the radiator. They allow the transmission fluid to be cooled off. If these lines get damaged in anyway, your Grand Cherokee is going to leak transmission fluid. Finding the leak in the line can be tricky. Look at the lowest point, the ATF will pool and drip from there.

4. Bad Seals

There are many seals inside the transmission that keep the transmission fluid pressurized within it. When these seals go bad, the transmission can’t hold pressure as well and the transmission fluid will leak.

This is last on the list, since you should check all of the external places that a transmission can leak first. When it comes to looking for a bad seal, it’s something that should be left to a professional.

Driving Your Grand Cherokee With a Leaking Transmission

If your Grand Cherokee’s transmission is leaking a quart of ATF or so every thousand miles, that’s going to be manageable. But, if you’re losing a quart every time you take a drive, that’s going to be a real problem, especially if you let the fluid level get too low.

When the transmission fluid level gets too low the transmission will begin to slip. This means that there is no longer enough fluid in the transmission for it to do its job as a hydraulic fluid that conducts energy from the crank through to the axles/driveshaft. Here’s more on transmission slipping diagnosis.

Once it begins to slip, your Grand Cherokee’s transmission will begin to wear at an unusually high rate. This is due to the transmission fluid also being a lubricant and acting as a coolant as well. Once you take away the lubricant and you let the transmission overheat, it begins to wear at an incredibly fast rate, and will soon not work at all.

Conclusion: Grand Cherokee Transmission Leak Diagnosis

If your Jeep Grand Cherokee’s transmission is leaking directly from the transmission pan (far and away the most common area), than it is safe to drive. it should still be fixed right away.

Enough transmission fluid leaking anywhere can be dangerous. But, if you have a few drops showing up on the garage floor, and it only needs topped off now and then, it’s going to be safe. When in doubt, don’t drive a vehicle that you don’t feel comfortable driving, especially if you are smelling a burning smell.

A little leak now will often become a big problem later. Do yourself a favor and have it fixed. If there is anything you would like to add, please leave a comment below. Good luck!

RECALLS! January 2022 Jason, “MAZDA6 shuts down while driving” fuel pump not monitored, may be no engine light etc. SEE…

I have a 2007 h3 hummer base model. Had transmission rebuilt (Pro).My problem is that when it gets around 35…

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Jeep Grand Cherokee: Leaking Water Diagnosis

If your Jeep Grand Cherokee is leaking water, it could mean a few different things are happening. Some water is completely acceptable. It depends on the situation. It really depends on where you’ve found it, and if it is really water.

Coolant or Water?

If you are trying to figure out if your Jeep Grand Cherokee is leaking water, the first thing we need to do is determine if you have coolant or water underneath of the vehicle. Coolant is sweet smelling and is typically orange, green, or pink. It might not seem possible to determine the color of the liquid in question, but a paper towel allowed to soak up enough coolant definitely will begin to show pigment. Water is tasteless and odorless.

If it is engine coolant, it’ll be coming from different places than water typically will, and will need to be addressed separately. There is a section further down the page with common radiator leak causes, if it’s coolant that you found has leaked from your Grand Cherokee.

Leaking Water Causes: Jeep Grand Cherokee

Here are the most common reasons that water may leak from your vehicle (not coolant, that is covered below).

Air Conditioning System– Your Grand Cherokee’s A/C system leaks water directly underneath the engine bay as a byproduct of its operation. If you there is a big puddle of water under the vehicle, it may be because it was left running in place for a while. Fifteen minutes on a hot day can be enough to get a trail to the rear wheels. This is completely normal and should not be cause for alarm.

Exhaust System– Your Grand Cherokee’s engine creates steam as part of the combustion process. It is way more noticeable in the winter time when white smoke billows out of your exhaust pipes. Water can also leak out of the exhaust as this happens. A little water is completely normal. A lot of water leaking out of the tail pipe is certainly a cause for concern.

Some Water Under Your Grand Cherokee Might be OK

Your Grand Cherokee’s air conditioning system is going to produce water as a product of the cooling process. This is normal. It will usually produce moisture just behind the rear tires. This is harmless water, and is nothing to worry about.

Jeep Grand Cherokee: Leaking Cooling System

If you’ve found coolant on the garage floor, and not leaking water, that’ll be an entirely different set of circumstances causing the leak.

It is possible that your coolant system could be leaking water. If you, or whoever had the vehicle before you filled the cooling system up with water instead of antifreeze coolant, it could be leaking water. The problem is that water will freeze in the winter time and cause the engine block, heads, freeze plugs, or some other part of the engine to freeze up.

Common Places Your Cooling System Leaks Water

If your Grand Cherokee’s cooling system is leaking water or coolant, here are the most common places that it may be leaking from.

Thermostat Housing– The thermostat is a small device that acts as a barrier that lets coolant into the engine only when it reaches a certain temperature (usually a bit over 200 degrees). There is a housing that bolts to the block that holds the thermostat. It’ll have a radiator hose attached to it. It is very common to find that your Grand Cherokee is leaking water or (hopefully) coolant from this location. It’ll be toward the front of the vehicle, further up than where the A/C condensation would be.

• Radiator– A bad radiator can will cause antifreeze to leak onto your garage floor or driveway. If you go looking for it, and your Grand Cherokee is equipped with electric fans, treat them like they could run at any time just to be safe.
• Radiator Hose– There is a rubber hose that connects the radiator to the thermostat housing, and another one that connects the return from the engine block. These hoses can leak coolant from them as they dry out and crack.
• Head Gasket– Your Grand Cherokee’s head gasket is designed to fail before permanent damage is done to the block or head when overheating. This does not mean that the head gasket will only fail if the engine has overheated. If the head gasket is blown, it could let coolant out of the engine onto the ground. It could also let coolant into the exhaust, which would manifest itself as white smoke.
• Cracked Head or Block– This would be the last thing that you’d want to look at on this list, as it’s far more likely that one of four issues listed above would be causing water to leak from your vehicle.

Conclusion: Grand Cherokee Leaking Water

Water itself, is often not a problem at all. If you have a coolant leak, that’s another thing entirely. Good luck diagnosing your Jeep Grand Cherokee’s water leak. If there is anything you would like to add, please leave a comment below.

RECALLS! January 2022 Jason, “MAZDA6 shuts down while driving” fuel pump not monitored, may be no engine light etc. SEE…

I have a 2007 h3 hummer base model. Had transmission rebuilt (Pro).My problem is that when it gets around 35…

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