How To Activate Electric Water Pump Bmw

BMW

• 02/fifteen/21
• 6 Min Read
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How To Replace A BMW F30 Water Pump & Thermostat (BMW N20/N26 Engine)

Bringing an engine to its standard operating temperature earlier leaning on it is the best way to increase its life. That is peculiarly the example with engines under boost pressure, such as BMW'southward N20 and N26 engines. This generation of BMW four-cylinder saw the use of an electric water pump, rather than one driven by a belt from the crankshaft. The electric pump makes for a quicker and simpler replacement, as well as more than liberty in packaging the components in the engine bay. Commonly, the electricals inside the h2o pumps will fail, leaving you with an overheating engine.

Along with the h2o pump, the other moving part in the cooling arrangement is the thermostat. Regulating the coolant warm-up is the thermostat's job. When the engine is cold, it prevents coolant from circulating to quickly bring the engine to temperature. When the engine reaches operating temperature, the thermostat opens up and allows the coolant to circulate. A failed thermostat can either be stuck open or stuck shut, leading the engine to never warm-up or overheat quickly. Replacing the thermostat with the water pump is a smart and easy way to prevent another repair so shortly.

BMW models and years applicable:

2014-2016 BMW 228i Incl. xDrive models	2014-2016 BMW 428i Incl. xDrive and GranCoupe models
2012-2016 BMW 528i Incl. xDrive models	2012-2016 BMW 328i Incl. xDrive and GT models
2015 BMW X4 xDrive28i	2012-2016 BMW Z4 sDrive28i
2013-2015 BMW X1 xDrive28i and sDrive28i	2013-2016 BMW X3 xDrive28i and sDrive28i

Symptoms of a failed BMW F30 electrical h2o pump or thermostat:

• Engine fan continually running on loftier
• High coolant temperature fault message
• Vehicle taking longer than usual to get to operating temperature
• 2E81, 2E82, or 2E85 mistake code for the water pump
• Engine overheating

Ignoring the signs of a failing water pump can cause costly engine issues. Repeated overheating can cause caput gasket failure and the warping of the cylinder heads, leading to plush repairs. If your vehicle is regularly overheating, don't drive it until you fix the result.

What will it price to supplant the electric water pump and thermostat on an N20/N26 powered F30 BMW?

There are a few ways to go about completing this chore. The h2o pump costs $285.50 on its own. You tin cull to just replace the pump and skip the thermostat, though nosotros don't recommend it. Adding the thermostat will add another $54 to the cost. Yous'll need to refill the coolant, and a bottle of OE BMW stuff runs $22.50.

Those three items full $362. If you follow our recommendations and replace the plastic coolant flange that is notorious for neat and leaving owners stranded, the aluminum replacement costs $18. That brings the total parts cost to $380.

Taking the car to a dealer or contained shop will meet you lot pay several hours for the labor and more for the parts. A professional person install with their parts will easily run yous close to $700.

How long will it take to replace the electric water pump and thermostat on an N20/N26 powered F30 BMW?

Thanks to the electric water pump, this job should take you also long at all. With the right tools and no distractions, a one-man performance can accept this washed in an 60 minutes or two.

Parts required to supplant the electrical h2o pump and thermostat on an N20/N26 powered F30 BMW:

• BMW Electrical Water Pump
• BMW Thermostat
• Aluminum Coolant Flange
• BMW Coolant

Tools required to supplant the electric water pump and thermostat on an N20/N26 powered F30 BMW:

• 6mm Socket
• 8mm Socket
• 10mm Socket
• 13mm Socket
• T30 Bit Socket
• E12 Socket
• Nut Driver Ready
• Picks
• Ratchets
• Ratchet Extensions
• Hose Clamp Pliers
• Funnel

Steps required to replace the electrical water pump and thermostat on an N20/N26 powered F30 BMW:

Step 1: Remove the intake airbox

Starting with the airbox, loosen the intake pipage clamp on the backside of the airbox with a flat-head screwdriver. Next, unplug the mass airflow sensor side by side to the clamp and unclip the hood release cable from the back of the airbox.

The airbox is secured to the automobile with three locating pins. Pull upward on the pins to release them and button down on the intake pipage to carve up information technology from the airbox. Once you lot release all of the pins, pull the airbox out of the engine bay.

With the airbox out of the way, remove the intake tube from the turbocharger. Utilize an 8mm socket or nut driver to loosen the clench securing the turbocharger'south intake tube.

Step two: Drain the cooling system

Jack up the front of the machine and set it onto jack stands. And so, use an 8mm socket to remove all 20 of the splash shield's fasteners.

The water pump is the everyman indicate in the cooling system. To bleed it, remove the h2o intake hose from the water pump. Place a bleed pan under the water pump, nether the car, and then use a 6mm socket to loosen the hose clamp on the h2o pump.

Next, open the top of the coolant expansion tank, and after that, remove the hose from the water pump.

If you are working on an xDrive model, there is an extra reinforcement plat on the subframe below the water pump. Use a 13mm socket to remove its eight fasteners and create a clearer path for the draining coolant.

Stride 3: Remove the thermostat

While you're in the surface area, use a 6mm socket or nut driver to loosen the clamp for the h2o pump'southward other hose. So, pull the hose off the pump; use a pick to help walk the hose off if it resists removal.

Adjacent, disconnect the large breather hose in front of the engine cover. Push in the tabs on the sides of the hose and walk it off of the cover.

Follow the hose downwardly and disconnect the bottom of information technology. First, unplug the electrical connexion for the PCV arrangement. Then, push in the tabs and pull the hose up.

Behind the hose sits the thermostat. Utilize a option to pull upwardly on the radiator side hose lock, then pull the hose off.

Next, use the hose clamp pliers to remove the hose clamps from the lower thermostat hoses. After you move the hose clamps back, pull the hoses off of the thermostat.

However, don't worry about removing the upper hose if you're replacing the upper coolant flange with the aluminum Rein flange. You tin simply remove the flange from the cylinder head and remove the flange and thermostat together.

Use a T30 bit socket to remove the coolant flange's bolts. Wiggle the flange around to break the seal of the o-ring, and so pull the flange out of the head.

Head back to the thermostat and disconnect the wiring harness from the coolant temperature sensor. Then, remove the thermostat'due south two mounting bolts with a T30 bit socket.

Footstep four: Replace the h2o pump

Head under the car and locate the water pump nether the engine. Outset, disconnect the harness from the pump. And so, employ an E12 socket to remove the 3 bolts that mountain the pump to the engine.

Two bolts mount to the underside of the engine while the third mounts above. Pull out the erstwhile water pump and install the new one. Thread in all three mounting bolts by hand to prevent cross-threading, and so use an E12 socket to drive them in.

Accept the water pump's inlet and outlet hoses, and fit them onto the pump. Then secure the hoses to the pump with their corresponding hose clamps. Use a 6mm socket or nut bulldoze to tighten the hose clamps.

IMAGE-16 [DIY BMW N20 Water Pump and Thermostat Replacement tightening the water pump'southward hose clamp]

Step 5: Install the new thermostat

With the new water pump installed, fit the new thermostat into place. Get information technology into position and thread in its two mounting bolts by hand before using a T30 bit socket to tighten them downward. Then, kickoff refitting the hoses.

Epitome-17 [DIY BMW N20 H2o Pump and Thermostat Replacement fitting the hoses to the thermostat]

IMAGE-18 [DIY BMW N20 Water Pump and Thermostat Replacement plumbing fixtures the hoses to the thermostat]

Lock the upper hose in with the metal lock and secure the lower hose with its hose clamp. Then reconnect the coolant temp sensor on the thermostat.

You need to intermission the hose clamp that secuers the upper thermostat hose to the plastic coolant flange. Remove the old flange and slide on a new hose clamp. And then, slip the hose over the Rein flange and install it on the cylinder caput.

IMAGE-19 [DIY BMW N20 Water Pump and Thermostat Replacement plumbing fixtures the upper hose and coolant flange]

Printing the flange into the head and thread in its two mounting bolts by paw. Apply a T30 flake socket to tighten the bolts. Slip the lower portion of the hose over the thermostat and secure it with its hose clamp.

Finally, refit the PCV hose to the engine. Clip in both ends of the hose and plug in the electrical connection.

Stride 6: Refit the intake

Starting time, refit the intake tube to the turbocharger, and use an 8mm socket or nut driver to tighten the hose clamp. Next, fit the airbox onto its safe mounts.

IMAGE-xx [DIY BMW N20 Water Pump and Thermostat Replacement refitting the airbox]

And then connect the intake pipe to the airbox and plug in the mass airflow sensor. Tighten downward the intake pipe clamp with a flat-head screwdriver and fit the hood cable into the clips on the back of the airbox.

Step 7: Fill up and bleed the cooling arrangement

At present that everything'south back together, fill and bleed the cooling system. If you purchased the BMW coolant linked above, it needs to exist diluted. BMW recommends a l/50 mix of coolant-to-water for warm climates and a 60/40 divide for colder climates.

Cascade the coolant mixture into the expansion tank until information technology reads full. Then, activate the motorcar'due south self-bleeding process by turning it on and letting information technology run for a few minutes. After the bleeding process is over, check the coolant level in the expansion tank. Add the coolant mix equally necessary to bring the level back to full.

Finally, with the coolant topped off, refit the splash shield and reinforcement plate to the lesser of the automobile. Utilize a 13mm socket for the reinforcement plate's bolts and an 8mm socket for the splash shield's fasteners.

Enjoy the next 60,000 miles of peace of mind knowing your water pump and thermostat are fresh and healthy. If you're interested in more DIYs for your BMW, you tin visit bmw. fcpeuro.com  and subscribe  to our YouTube channel.

Written by :

Christian Schaefer

Owner of a flat-six swapped 1998 Impreza 2.5RS and a 1973 Porsche 914. Horizontally opposed views, but.

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Source: https://blog.fcpeuro.com/how-to-replace-a-bmw-f30-water-pump-thermostat-n20-n26-engine

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