Check to see if the radiator has holes in it or if the cap looks worn or damaged. The type of coolant you should use for your mini cooper is a 5050 mixture, 50 percent antifreeze and 50 percent water. The oem plastic bottle quickly turns yellow with age and stretches, distorts, cracks and finally splits. This rubber hose has the plastic quick connect fitting that connects to the coolant expansion tank. If the coolant tank has a cooper s, the cap will unscrew. The problem was a faulty coolant overflow tank cap. Mini cooper radiator cap best radiator cap parts for mini. Rubber hoses carry the coolant from the motor to the radiator, and also to the heater.
Sep 30, 2014 usa link for expansion tank canadian link for expansion tank replacing the coolant tank is pretty important because as the car ages the plastic. I just hope it is the expansion tank so i can finally stop thinking about the car leaking all the time. Identifying a faulty radiator or expansion tank cap gates europe. Mini cooper s models are notorious for coolant leaks. Unfortunately, one of the weaker links in first generation mini s is the plastic coolant expansion tank. Identifying a faulty radiator or expansion tank cap. Sep 04, 2012 radiator or expansion tank pressure cap the cooling system radiator cap not only keeps the system closed, but allows a buildup of pressure in the cooling system. My 2003 mini cooper s suddenly pegged the temperature gauge and lit the max temp light last night. I was sitting in a line of traffic at a light when it happened.
The cap however uses different threadspoor threads compared to the genuine mini part hence the 3 star rating. Signs your radiator cap needs to be replaced repairpal. Make sure to check your engine when it is cold for an accurate reading. Often times, the coolant is not kept under enough pressure to keep it from boiling or expanding too much. Bmw and mini diy overheating cooling system diagnostics.
Some coolants will come premixedthat is, you dont need to add any water. As the coolant heats up, it expands and builds pressure in the system up to the point of the caps rated maximum pressure. Aluminum coolant expansion tank can for 20052008 r52 mini cooper s convertible. Read on and we will cover how your cars heater and engine cooling system work, what. Your mini cooper needs antifreeze, also known as coolant, to prevent your engine from freezing during the winter. The car has been to the dealer three times before today and now a 4th time today. My daughter has a 2006 mini cooper and has a recurring coolant problem. Oem coolant tank hose r55 r56 r57 r58 r59 way motor works. Download our guide with full details on the best diagnostic approach to the cooling system. When working properly, the radiator cap provides a tight seal that helps. Check out free battery charging and engine diagnostic testing while you are in store. The owners manual says to check with the dealership about coolant type.
I have some of the standard green ethelyne glycol based coolant, the bottle of which claims it is compatible with all. The radiator cap is released by the pressure and the. Even with a first fan cut in temp of 105 deg c boiling over can occur. Works fine as a replacement, fits the car and holds pressure. It was a simple fix and took about 15 minutes to replace. The radiator cap keeps coolant in the engine and radiator once the coolant heats up it need to expand and the radiator cap allows coolant to push a small amount of coolant into he coolant expansion tank, as the coolant in the radiator cools down that coolant is drawn back into the radiator through a second valve in the radiator cap. Coolant recovery bottle caps free delivery possible on eligible purchases. Oem mini coolant expansion tank hose for the r55 r56 r57 r58 r59 mini cooper s with n14 or n18 engine. It has blue coolant, which i assume is the original factory or dealership coolant. Take it to a mini dealer and pay to have them diagnose the issue.
Mini cooper base 2003, engine coolant expansion tank by febi. Mini cooper questions 2008 mini cooper s coolant leaks. Water passes into it when overflow occurs when hot then is drawn back in again when cooling down. Help mini one seriously low coolant other cars 350z. I had to replace a friends expansion tank on her 2003 mini cooper s.
This part supplied from parts geek was an exact replacement and looked factory stock. Genuine mini 17107515499 expansion tank cap 17107515. I think there is a known issue with the minis expansion tank weeping coolant when hot can be fixed by running some sealant along the seams of the expansion bottle depends how low it gets, as my girlfriends mini has the above issue, but it only falls to the bottom level of the bottle. Coolant overflow expansion tank reservoir w cap behr for mini cooper s r52 r53 fits. Dromedary 177529273 radiator coolant expansion header tank bottle w cap for mini cooper s r52 r53. Nov 04, 2019 if you notice coolant fluid near the radiator or the radiator cap, then you clearly have leaky coolant. I also have a haynes manual, which says the mini uses a phosphate and nitrate free coolant. How to test the radiator fan on a mini r50 2002 2003. These coolants will typically say 5050 or premixed on the front of the coolant bottle. Suction out any coolant inside the expansion tank and then remove the 10mm nut that secures the tank to the bulkhead next to the power steering fluid reservoir. Here at advance auto parts, we work with only top reliable coolant reservoir cap product and part brands so you can shop with complete confidence. The mini cooling system is a crock of shit, its poorly designed, look up boiling point of water vs pressure, then look at the margin at 112 degrees c at cap pressure.
These are common to leak after many oil changes and being moved around. Id recommend to start at the coolant reservoir cap. Your mini cooper needs antifreeze, also known as coolant, to prevent your. Combine this cap problem with a first stage radiator fan thats not working at all, and boil over is guaranteed. Bmw and mini losing coolant but no leaks low coolant. The worst complaints are engine and engine cooling. Then tighten the cap and run the engine until it reaches operating temperature. Instead of being located on the front, near the radiator, the tank is actually at the back center of the engine. When it comes to your mini cooper, you want parts and products from only trusted brands. The coolant expansion tank cap keeps necessary pressure on your coolant to increase efficiency. Weak expansion tank cap if the pressure relief valve in the cap is venting at a lower pressure than it should, this can allow coolant to be expelled from the expansion tank overflow as the system heats up and the coolant expands. The 1st time at 32,000 miles the dealer replaced the thermostat. Mini cooper base 2003, engine coolant expansion tank cap by genuine.
The forge polished alloy tank is a directfit replacement for the factory unit, and completely resists the cracking and fading of the original part. Radiator or expansion tank pressure cap the cooling system radiator cap not only keeps the system closed, but allows a buildup of pressure in the cooling system. The oem cap is also a poor design has a safety release system that is designed to release pressure once it gets above 1416 psi. If your engine cooling system is in need of repair, dont compromise the performance and safety of your car with suspect, offbrand replacement parts from the local. Mini cooper coolant reservoir cap advance auto parts. Its an easy job to replace and the parts are not expensive. With access to s of mini parts in stock at any one time, our network of mini parts specialists will aim to. If you have an overheating issue in your vehicle, a simple, quick, and inexpensive part to replace is this cap. If you notice coolant fluid near the radiator or the radiator cap, then you clearly have leaky coolant. Mini cooper r56 coolant expansion tank replacement 20072011. After a few minutes the coolant level will fall, an indication that the trapped air has vacated the cars cooling system. How to test the radiator fan on a mini r50 20022003. The radiator cap is a very important part of the engines cooling system, yet it is often overlooked when troubleshooting the system.
My 2003 mini s suddenly pegged the temperature gauge and lit. The mini r56 cooling system is filled through the plastic coolant expansion tank or coolant reservoir at right front of the engine compartment. Usually when come to a standstill after trampingon a bit. Leaking antifreeze but not overheating coolant leak causes. Girlfriends mini cooper is coming up to 4 years old and i have had to top the coolant up a couple of times in the 11 months we have had it.
The most used coolant liquid is pinkred color see your car manual for the colortype so it is easy to see even after it dries, therefore easy to identify leaks. Always check the automobile service manual for specification and recommend test for your application radiator cap or cover. Mini cooper r53 coolant expansion tank failing youtube. The cooper s has a smaller return hose that attaches to the top, and a larger supply hose that connects on the bottom of the reservoir. If you see liquid around your radiator cap, then it is loose or broken and must be fixed. As it heats up, watch the temperature gauge to be sure the engine doesnt overheat. One replacement mini radiator expansion coolant water bottle cap for. Buy oes genuine expansion tank for select mini cooper models. Advance auto parts has 3 different coolant reservoir cap for your vehicle, ready for shipping or instore pick up.
Recently its dropped from max to min much quicker and the coolant now looks a bit like a chocolate milkshake in the filler bottle. The radiator cap and expansion tank cap make sure the filling hole of the radiator and. Ive got a 2007 mini cooper regular, nons with almost k on it. Make, acura, audi, bmw, buick, cadillac, chevrolet, chrysler. They will pressure test the system to determine where the system is leaking. However, the replacement procedure is basically the same. Bought this to replace the coolant tank on my 2005 mini cooper s r53. If an individual expansion tank is installed, which is mostly the case today, the expansion tank cap is equally important.
The caps on the header tank are plastic crap, years ago i posted on testing new caps they varied on blow off pressure the rmw tank and cap would as a minimum give you a. Jan 15, 2016 mini cooper r53 coolant expansion tank replacement. The cooling water expansion tank, as mini would call it, is close to the exhaust manifold and can see fairly severe conditions. With access to s of mini parts in stock at any one time, our network of mini parts specialists will aim to beat your local mini main dealer prices. The mini s header expansion tank is a awful flawed design.
Hi all, i know this is an old post, but i had the same problem with my r53 jcw yesterday, and today ive sorted the problem of the coolant tank bubbling over, 1. Ive already replaced the timing chain in 2014 ouch, but now theres issues with coolant disappearing from the reservoir and burning never leaking on the ground, btw. Mini cooper coolant reservoir cap auto parts warehouse. Adding engine coolant also known as antifreeze to your 2003 mini cooper is pretty easy. Buy a 2006 mini cooper expansion tank cap at discount prices. Check and change fuses and relays for coolant system. Engine coolant circulates through your engine to keep it cool in the summer but wont freeze in the winter. Oes genuine expansion tank cap for select mini cooper models. We love when auto parts experts come to our site and we love when car parts newbies come to our site. At partsgateway, we find genuine radiator bottles for the mini of all ages and car body types. You can find out in the vehicles manual what the proper cap is and. Belt driven coolant pump bolted to the right side of the engine block.
Mini cooper r56 coolant expansion tank replacement 2007. Factory replacement coolant supply hose to the radiator expansion tank. Were here to help you find that perfect coolant reservoir cap for your mini cooper. Make sure the pressure caps fitted to the expansion tank and a flat, plain cap on the radiator. Mini cooper r53 coolant expansion tank replacement. Mini cooper r50 2001 2007 03 coolant looks like chocolate. With the radiator cap off, start your car and let it run.
Ecs is now offering a full kit expansion tank replacements for the mini r55r56r57. Mini factory replacement cap for the radiator coolant expansion tank on your 2nd generation mini cooper and cooper s models including r56 hardtop r55 clubman r57. This is the original coolant tank to the turbo and coolant t rubber and steel hose. I went into a parking lot as quickly as i could and put the heater controls on max heat and fan. The most used coolant liquid is pinkred color see your car manual for the colortype so it is easy to see even after it. Mix the coolant with distilled water so that you have a combination of 50% coolant and 50% water. Coolant goes into the reservoir tank as it expands. How to tell a defective engine radiator capcover causes. Choose top quality brands ac delco, apauro parts, api, febi, genuine, motorad, stant. The coolant expansion tank is different on the nonsupercharged cars.
Removing the coolant reservoir cap on a warm engine could cause the cap to fly off. Usa link for expansion tank canadian link for expansion tank replacing the coolant tank is pretty important because. I took it to my mechanic on friday, he found the temperature gaugesensor was leaking so they replaced, it all seemed good. We explain the how the engine radiator cap should perform and how. Bubbling coolant in expansion tank fixed mini cooper. Mini cooper expansion tanks what are the issues and solutions. The seam along the center of the tank had cracked and was leaking coolant. Mini cooper coolant expansion tank replacement r50r52r53. Mini cooper expansion tank replacement issues and solutions one of the weaker links in first generation mini coopers is the plastic coolant expansion tank. Chances are you have either a radiator cap leak, internal coolant leak or an. Aug 26, 20 weak expansion tank cap if the pressure relief valve in the cap is venting at a lower pressure than it should, this can allow coolant to be expelled from the expansion tank overflow as the system heats up and the coolant expands. Coolant overflow tank recovery bottle expansion reservoir.
Mini cooper expansion tank replacement issues and solutions. Mini cooper coolant leak page 1 new minis pistonheads. German auto repair european car service mercedes repair scottsdale bmw repair. Genuine mini 17107515499 expansion tank cap 17107515499. Available are ecsassembled and genuine mini replacement options.
The minis header expansion tank is a awful flawed design. The standard cap is notorious for opening too early. Head gasket symptoms boiling engine coolant reservoir and over. In effect a cap that opens at 3 psi allows the coolant to boil as low as 105 deg c.
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