Bmw e46 losing coolant no leak

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Bmw e46 losing coolant no leak

Hello There, Guest! Login — Register. Thread Rating: 11 Vote s - 2. Threaded Mode Linear Mode. I have only had this car going for 2 months now it has km's on the clock and everytime something crops up, my wife is not impressed with this car.

I have to fill expansion tank at least once a week, replaced the cap, it does not seem to be leaking by the expansion tank, no residue. Any ideas where the loss could be, also the car is hestitant in all the gears, maybe the coils or something! Never give up on a Dream even if others dont encourage it. Check the pipes for the fluid leak. I have checked up on the motorplan, ignition coils were previouly replaced along with vacuum pump, out of motorplan the car was serviced and the cylinder head done by Zeemax, not sure what exactly was done or replaced.

I need to have a reputable BMW mechanic have a look at it, thanks for the feedback. Just read up on how to bleed the system properly. Power issue : E46 has some 1st gear take off issues in my opinion, but I did read that it could just be the MAF. Caution is the confidential agent of selfishness. I am gonna check the pipes and the entire coolant system this weekend, will bleed the system and have a look again. Check the sensor on the bottom radiator hose, had the same issue on the wife's i.

Cleaned the O ring on the sensor and it's been fine for a month. I have taken a few pics last night it seems to be leaking where the top hose connects, not sure if it is leaking at the hose or the seams of the connector, can this connector be purchased separately or does it come with the expansion bottle, I was thinking maybe there is air in the system as I replaced the worn radiator cap.

Any feedback would be appreaciated. Thank you, if it is the culprit its part of the top hose, gonna price BMW for it. If I'm correct, that pipe just run from your radiator and have the thermostat housing after it?

If it is, you're looking at around R for a dealership replacement At least it's quick to replace, just make sure that you buy coolant and top-up your radiator. Signature under construction. Just called SMG R Im not a fan of quickfixes, but it might work for you. Or if you have the money, get the pipe. I bought my piping with the bleeding screw for R Maybe they're including the thermostat housing in the price? Ok, took the pipe off and found a hole underneath, it looks like a bad design, got a good second hand one all seems to fine now, except now my oil consumption is out of the window, gonna post a new post, E46 really sucks, I have had my E36 is for 5 years with no major problems!

Please help!! I have recently been having problems with my BMW I. It's a model with km on the clock. The coolant light has been coming on and I have been topping up with distilled water every two weeks, approx ml every time. They have pressure tested the system and can find no problems.

Coolant Levels Dropping Consistantly with NO STAIN ON DRIVEWAY

Any Ideas??? Yes, read my post on the elbow at the back of the engine between the engine and the bulkhead. On the M43 1. The first two pipes have o-rings on the side that fits into the head and block and at his age 10 - 13 years you can be assured that the o-rings are shot and are leaking. Trust me, i have had a similar problem, having to fill up with water every third day and not being able to find the leak.

Well, that is where your leaks are.David Hobbs helped make these videos. We are still working to obtain content for your car, however the video above is believed to have similar characteristics as your car. Follow the steps in this video to see how to fix minor coolant antifreeze leaks in your BMW i. Leaking coolant is one of the more common types of fluid leaks on is.

Engine coolant which is also called antifreeze or anti-freeze moves through the inside of your i's engine and keeps it from overheating. Coolant can leak from the reservoir or from the hoses, in is with the 3. The video above shows you where the coolant reservoir, hoses and connections on your i Base are located and the steps needed to fix minor leaks. A few things to note about coolant is that it is sweet tasting and highly toxic, so it can end up in the dog's stomach pretty quickly.

If you ignore a small coolant leak long enough, you will run out of coolant, which leads to an overheated engine and other serious, but highly avoidable, problems. In many is, an anti-freeze leak can cause the temp sensor to record high engine temperatures. Always protect yourself with safety glasses and gloves when working with the coolant on your i. Rotate your tires at least three times per year. Learn where your air filter is located and how to determine if it needs to be changed.

BMW Head Gasket Problems

Carmakers are hiding interior fuse boxes all over the place these days - see how to check your interior fuses here! If your brake fluid is a little low, learn how to add some here. Ignoring a low level leads to big problems. The best way to fix leaking hoses is to replace them, but if you don't have time, a stop leak product might work for you.

e46 coolant loss

Getting Started Prepare for the repair. Set Up Paper Position paper and mark wheels. Assess Leak How to determine if the leaking fluid is coolant. Open the Hood How to pop the hood and prop it open. Find Reservoir Locate the coolant reservoir and clean it. Check Level Determine the coolant level. Fix Minor Leaks Easy way to tackle minor coolant leaks. Replace Cap Secure the coolant reservoir cap. More Info. Additional information on minor coolant leaks. Video Description. Other videos you might find helpful.

Rotate your tires at least three times per year BMW i 2. Determine if your air filter is dirty Learn where your air filter is located and how to determine if it needs to be changed.

Check for a blown interior fuse Carmakers are hiding interior fuse boxes all over the place these days - see how to check your interior fuses here! Add brake fluid If your brake fluid is a little low, learn how to add some here.

Ignoring a low level leads to big problems BMW i 2.In this article you can find 13 of the most common problems on BMW E46 models. If getting ready to buy one, or have one and want to know what might be some of the common problems to expect in the future, this list could be useful.

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The most common repair on these vehicles by all means. With a couple of searches online you can find some useful forum posts like this one. In this video you see some of the common problem areas as far as coolant leaks. Common on a leaking expansion tank. This is a common symptom of worn out thrust rod bushings in the front suspension.

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They are commonly replaced between 50kk miles. One of two things usually will happen: either it will become noisy, or it will start leaking coolant. This can cause your drive and timing belts to go bad.

The problem is caused from worn door seals. There are all kinds of hacks out there to repair this issue, but the right thing to do is to get a new set of BMW door seals. It is not uncommon for the radiator to develop a coolant leak.

A leaking radiator will require replacement. When a leaking radiator is replaced the entire cooling system should be inspected and if any additional leaks are found they should be repaired also. Overheating can cause severe engine damage.

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If the engine begins to overheat it is recommended to stop at the first available location and have your vehicle towed to a repair shop. Rear leftRear right Loss of Coolant In this video you see some of the common problem areas as far as coolant leaks. Water Pump May Develop Coolant Leak One of two things usually will happen: either it will become noisy, or it will start leaking coolant. If find the same results be sure to check these items to prevent future repairs.

This is an opportunity to make a video for it. Coolant Leak from Radiator It is not uncommon for the radiator to develop a coolant leak.Any trip I take over 20 miles my coolant light kicks on. The level is going down, but not onto the ground as far as I can see. There is NO water in my oil. Any ideas on what may be wrong?

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I thought i would have an answer if I saw white in the oil, but I don't. Adam answered 11 years ago. Take it to a mechanic to have the coolant system pressure tested for leaks Many cases it's about the only way to find it.

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Jared answered 11 years ago. Blooms answered 11 years ago. I did some digging and think I have it figured out. I think my fluid is short for two reasons. One is the leak.

Two, it is running too hot and running back into the fill tank and blowing off. Any ideas on what happened to my fan blades? I see no interference with close-by parts Robert answered 11 years ago. Ahh your culpriate is broken motor and transmission mounts they caused the motor to go side ways under torque and pushed your fan blades up agiants the shround shattering them.

This in turn causes over heating and destroys your fan clutch. Fred answered 11 years ago. Your head is cracked. Same thing happened to my '88 ix, no coolant in oil until about a month later I started noticing coolant in the oil.Looks like the majority of my coolant is on the pavement. Upper and lower radiator hoses were replaced 1 - 1.

bmw e46 losing coolant no leak

The expansion tank was replaced maybe 2 years ago. There are splatters of coolant around the engine compartment, some on the fan, some on the air filter housing. I suspect that the pump has gone bad, but I don't see coolant around it You'll have to remove the pulley in order to get a good look at the weep hole. The pulley can chip or break during removal, so be prepared to install a new one. Consider installing an aftermarket pulley with an open design, which makes it easier to keep tabs on the weep hole.

The pulley by ECS Tuning is a good choice. Have you checked the thermostat housing? Drips from the housing will fall onto the fan and spatter on the hoses and airbox. It's nearly impossible to see the water pump's coolant weep hole if the stock, solid plastic pulley is mounted on the pump. No way you're going to see it mounted on the car as it's under and behind the pulley.

The airbox stain also tells me it's the weep hole. The crank pulley right under it throws the leaking coolant around. I took the serpentine belt off - it looks dry, but I'll chage it.

It has about k miles on it Sorry guys, but I'm struggling with the majority of the coolant coming out the weep hole on the WP. Usually they just weep, hence the name, unless there's catastrophic failure which would probably be accompanied by noise. OP, if you have k on your pump you DO need to replace it whether it's leaking or not. A leak of that magnitude has to be obvious.Is your BMW low coolant warning on? BMW low coolant warning typically comes on due to the low coolant level in the expansion tank located in the engine bay.

bmw e46 losing coolant no leak

Checking the coolant level on a BMW is easy and takes less than five minutes. It is crucial to follow the correct procedure to avoid injuries and get an accurate reading. Remove the coolant reservoir cap. It will allow residual pressure to release without blowing off the cap. Determine the coolant fluid level.

bmw e46 losing coolant no leak

There are two different float designs. The red float may have two balls. One indicating the low and the second indicating the full level. The level is full when the bottom of the float reaches flush with the top of the cap. It is possible to still get a Coolant Level too Low warning even if you add coolant.

The first thing that you need to inspect is the coolant level sensor if your BMW has one. It is possible that there may be an electrical issue with the sensor causing it to trigger the warning message. If you are extremely low in coolant, you may get the low coolant warning light even if you add coolant. The car was either neglected or was extremely low in coolant. Run the car for one minute and recheck the coolant level.

It is possible that you need to add more coolant. This may be caused by outside temperature fluctuations or when using certain incompatible aftermarket coolant brands. Other possibilities include defective water pump, bad engine temperature sensor or bad coolant level sensor. Older BMWs had a translucent coolant reservoir with a line that shows the high and low level. Back then it wasn't necessary to remove the cap to get a coolant reading.

BMW redesigned the cooling system, and now they use an expansion tank. Instead of the transparent tank, they implementing the float design the rod that pops up. Not all aftermarket coolant is compatible with BMW cars.

Full strength coolant is not mixed and you will need to mix it yourself before adding it to the cooling system. Use distilled water instead of tap water. Tap water will work, but it is not recommended because it can introduce impurities, minerals and also cause corrosion to the cooling system over time.

If the temperature gets above normal or you get a warning light that engine is overheating, stop driving your BMW. Get it towed to a mechanic ASAP.

Symptoms Engine coolant level light on Message on iDrive stating Low engine coolant level Engine Overheats Coolant warning on, then off after driving Engine coolant level too low Message: Risk of engine damage!

Top up the coolant at the earliest opportunity, See owner's handbook. Caution: Risk of scalding! Park your BMW on a safe location and set the parking brakes. Allow the engine to cool down.

bmw e46 losing coolant no leak

Always make sure the engine is cooled down before you remove the cap from your coolant reservoir or you risk getting burned.Despite the fact that BMWs are among the best engineered cars in the world and the company is a leader in many aspects of the automotive industry, many of the cars it produces can suffer from head gasket problems. This is caused by a few factors, namely the fact that BMWs often appear to have water pumps, thermostats and radiators that don't last long.

There are some things that can be done to prevent a warped head gasket as well as signs to look for if you think you have a problem with the head gasket. A failed head gasket is generally cause by an overheating engine that, in turn, causes the head to warp. If the head warps, the head gasket cannot properly seal the head to the block, allowing coolant to mix with the oil inside the motor.

An engine will overheat for a variety of reasons. If the water pump fails on a BMW, it will stop circulating coolant from the radiator into the motor, causing potential overheating if the problem is not caught in time. If the thermostat fails, then the fan will not turn on and cause overheating. The least likely possibility is a failed radiator core, though this does happen as well.

13 Common Problems on BMW E46 Chassis Models

There are several signs that a BMW has a blown head gasket, such as if the temperature gauge shows the car is routinely running hot. If the low coolant light comes on, even after topping up the coolant, it's leaking somewhere. Another way to tell is by opening up the engine's oil cap and inspecting the oil. If the head gasket is blown, the oil will mix with the coolant and the oil will have a brown, milky appearance.

If white smoke comes out of the tailpipe even after the car is warmed, there is a good chance there is a problem. There are several things you can to help ensure your BMW motor does not suffer from a blown head gasket. It is recommended you change the water pump every 60, miles or so and replace the thermostat if there is any sign of the motor running hot.

BMW E46 Expansion Tank DIY

Though radiators are expensive, it's a good idea to replace them everymiles or so. It is also possible to upgrade to an aluminum radiator on most cars as well as a better engineered aftermarket water pump. It's also a good idea to periodically have the coolant flushed and replaced.

If the head gasket blows on a BMW, fixing it is labor intensive. This article was written by the It Still Runs team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information. To submit your questions or ideas, or to simply learn more about It Still Runs, contact us. What Happens if the Head Gasket Is bad? References Pelican Parts. About the Author This article was written by the It Still Runs team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information.

Photo Credits Zachary Mayne.


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