Burgy ///Member. Posts: 1 543 Threads: 163 Likes Received: 430 in 235 posts Likes Given: 315 Joined: Sep 2010 Reputation: 40 #1., 09:14 AM. BMW E46 Brembo GT Big Brake Kits. Brembo is the worldwide leader in the engineering, development and production of braking systems and components for automobiles, motorcycles and commercial vehicles in the Original Equipment, Aftermarket, Racing and High Performance market segments. The Gran Turismo system’s level of technology and performance is unrivaled by any other product on the market. DIY MODS: AA Stage I supercharger:str8pimpi, Meyle HD FCAs w Powerflex CABs, Bilstein shocks, Meyle HD Rtabs, Angel Eyes, Clear Corners/Markers w/ LEDs, LED tails, ZHP rims, Akebono pads, AUX input DIY E46 Merit Badges: Sunroof resurrection, CCV, OFHG, VCG w/ VANOS seals, DISA, Cooling Refresh I, steering giubo, window regs, Magnetic. BMW E46 Fanatics Forum Since 2001 A forum community dedicated to BMW E46, E90, and F30 owners and enthusiasts. Come join the discussion about M performance, turbo kits, engine swaps, builds, modifications, classifieds, troubleshooting, maintenance, and more!
This is a DIY an other member (Elbert) put together and I assisted with by email last year. Seeing how there are many issues with the OS due to the cold weather I thought I would post the DIY here for everyone to use. He is on bimmerfest.com and I am here on e46fanatics.com so we’re trying to help everyone out.
Hope this help some people save money in these tough times.
DIY removal of the:
• Oil Separator Valve (also known as: Pressure Regulating Valve, or Crankcase Ventilation Valve -CCV, PVC valve)
• Idle Control Valve (ICV)
• Intake Manifold Resonance Valve (also known as DISA Valve)
This is a journal of the work I did on my car-a 2001 BMW 325i E46 sedan, auto transmission. To the best of my recollection, the following tools, parts, and procedures are what I used in working on my car. Your particular car model might differ.
E46 Diy Mods Mod
Tools
• T-40 & T-25 Torx
• 6mm, 10mm, & 13mm sockets
• Ratchet -1/4″
• Extension bars, various lengths – 1/4″
• Universal joint – 1/4″
• Throttle body cleaner
• Mirror
• Long screw driver
• Magnetic pick up tool (you’re a bound to drop something)
• Small blade knife
• Optional (nice to have but not absolutely necessary)
o 6 mm reversible ratchet wrench – For less than $10.00, this will pay for itself to facilitate removal of the hard to access lower air intake boot clamps
o Assembly lube
o Electrical connector cleaner and dielectric lubricant
o Hose cutter, i.e. PVC pipe cutter
Shopping List
• 11617501566 Oil Separator 1 47.95
• 11611432559 Oil Separator Hose to Valve Cover 1 22.97
• 11157532629 Oil Separator Oil Dip Stick hose 1 8.48
• 11617504535 Oil Separator Connecting Hose 1 32.90
• 11617504536 Return Pipe from Connecting Hose 1 31.49
• 13541435627 Air Intake Boot; Lower 1 12.43
• 11431740045 O-Ring Oil Dip Stick Tube to Oil Pan 1 0.70
• 11611716174 Throttle Housing Gasket 1 4.92
• If your funds are low, and considering how unreasonably expensive these hoses are, try removing the Return Pipe from Connecting Hose without breaking it. If you are successful and decide to reuse, flush clean inside of hose with throttle body cleaner and blow air through the hose to make sure it is clear of any blockage
Helpful suggestions
• It is best to order all 4 plastic related oil separator hoses. These plastic hoses get brittle with age. The older the car, the greater the likelihood the connector/hose will break during removal. These connectors are easy to connect but could also be a challenge to disconnect due to seizing and the restricted working area. Another benefit of having the parts is you can practice how they connect/disconnect to each other. In addition, to facilitate removal, it is sometimes better to cut the hose or the connector
• Either drive the front wheels on a ramp or raise the front wheels. This working position is easier because the access to the work area is more convenient than stooping low. In addition, you may need to access the car from underneath, although I did not have to this. I just like the car being higher; it is easier on my back
• Unlike the upper air intake boot, the lower air intake boot will likely need replacement. The small elbow tube of the lower air intake boot is susceptible to splitting.
• Although the wiring harness connectors are keyed to prevent cross connection, it is good practice to place a label on the connector and the unit that it attaches to. Also, count the number of wiring harnesses you are disconnecting. It is easy to miss a connector during installation.
• The wiring harness connectors have a metal locking wire clip that is pushed down and pulled to disconnect. To re-install, hold connector without touching metal clip and insert connector until you hear it click.
• It also a good practice to label all screws and bolts, replace to its location, or tape it to the removed part. The more diligent you are in doing this, the smoother your installation process will be.
• Take several digital pictures as you go along during removal to serve as reference during installation just in case you forget how things go.
• Lubricate the ports of the new hoses with assembly lube to ease assembly
• Clean all electrical connectors with electrical cleaner and use dielectric lubricant.
• Check the condition of surrounding vacuum lines and hoses while you are there
It is best to REMOVE the following parts in the order given. Underneath each heading are the fasteners and instructions for removal of the part.
1. Micro-filter housing assembly. Photo 1
a. Micro filter cover – 3 half-turn clips
b. Micro filter
c. Cable harness cover – lift clips to open
d. Micro filter housing base – 4 T-25 torx screws, location is underneath the micro filter and towards the firewall
2. Fuel rail cover. Photo 1
a. 2 plastic caps
b. 2 10mm bolts underneath plastic caps
3. Front air duct. Photo 1
a. 3 plastic expanding fasteners. Raise middle pin and pull out expanding fastener
4. Mass Air Flow sensor (MAF) Photo 1
a. Disconnect wiring harness to MAF sensor
b. Loosen hose clamp between MAF and upper air intake boot
c. Leave MAF connected to the air filter box
5. Air filter box assembly. Photo 1
a. Detach wiring harness behind air filter box
b. Remove 2 10mm bolts on air box base
c. Remove both air filter box and MAF as a unit
6. Air intake boot -upper. Photo 1
a. Loosen hose clamp
b. Disconnect vent hose coming off the top of the upper air intake boot or leave it connected and just lay the upper air intake boot on top of the intake manifold
Bandulu street couture meaning urban dictionary. 7. Middle boot connector
a. Loosen hose clamp
8. Oil dipstick guide tube
a. Detach or slice off hose from the dipstick to the oil separator
b. Unhook wiring and vacuum lines from oil dipstick guide tube
c. Remove 13mm bolt holding oil dip stick bracket
d. Clean surrounding area and base prior to pulling dipstick assembly off. Replace o-ring at its base. No oil catch pan required as long as the oil pan is not overfilled
e. Insert a plug on the hole to prevent anything from falling in
f. Clean passage way of guide tube going to the oil separator with a thin piece of metal such as a clothes hanger wire and spray clean with throttle body cleaner
Bmw E46 M3 Performance Mods
9. Heat shield. Photo 1
a. 2 quarter-turn twist fasteners
b. Move hose and weather strip out of the way, and lift heat shield
10. Lower air intake boot. Photo 2 & 4a
a. Before removing this boot, with the aid of a small mirror, notice this part has large rubber tab at its base. This tab aligns between 2 raised guidelines located on the outside bottom of the throttle body port. Align the tab when installing the new boot
b. 2 hose clamps – 1 clamp for the throttle body port and the other for the Idle Control Valve port
11. Intake Manifold Resonance Valve, also known as DISA Valve. Photo 3
a. Disconnect wire harness
b. 2 T-40 Torx screws
c. Spray clean the inside flaps
12. Wire harness box, Photo 3 & 5
a. 3 10mm nuts. One of the nuts is located at bottom right of the throttle body, next to one of the throttle body bolts. You will need a mirror as an aid to view location
b. Remove additional electrical connectors, not all, so you can move the wiring housing aside
13. Fuel Tank Venting/Breather Valve and mount bracket. Photo 5
a. Disconnect wire harness
b. Slide out fuel tank venting valve from mounting bracket. There is no need to remove connecting hose
14. Fuel Tank Venting/Breather Valve mount bracket. Photo 5
a. Remove 2 T-25 mount bracket screws
15. Idle Control Valve ICV. Photo 5
a. Disconnect wire harness
b. 2 T-40 screws
c. The other port end of the ICV is held via friction to a rubber grommet – pull out ICV to remove. Clean rubber grommet and lightly coat with assembly lube. Spray valve ports clean with throttle body cleaner
16. Throttle Body. Photo 4a
a. Disconnect wire harness
b. 4 10mm bolts – outside corners
c. Clean ports and butterfly plate with throttle body cleaner
17. Return Hose – Photo 6 & 7
a. The connector that is close to the firewall is difficult to remove due to very restrictive space. Insert a screwdriver between the fuel rail and locking ring to pinch ring and coming from the opposite position press the other side of locking ring with your finger and pull out hose. Another option is to cut locking ring off with a blade. Without the locking ring, pull connector out.
b. Remove other end of connector that is attached to the connecting hose
18. Oil Separator Hose to Valve Cover. Photo 7
a. Notice 90 deg elbow of this hose goes to the valve cover and the other end goes to oil separator
b. Squeeze locking ring and pull out. If the lower connector is difficult to remove, cut hose and leave connector attached to the oil separator
19. Oil Separator Connecting Hose. Photo 6 & 7
a. Unlike the other hose connectors, the connector going to oil separator does not use a locking ring. Curl the flex hose to get clearance if necessary and turn connector about 50 degrees or slightly over ¼ turn counter-clockwise until it stops. Then pull out hose to disconnect
20. Oil separator. Photo 8
a. 2 T-25 screws
b. Important: One of the ports has a rubber plug. Remove rubber plug and transfer rubber plug to the new oil separator. If your car has a hose attached, ignore.
Bmw E46 M3 Mods
Installation tips
1. It is best to re-install the parts in reverse order given
2. Fasten the oil separator first to the engine, then insert the connecting hose through the intake passage way. Tara balam table. Important: Tug the hose to make sure you have it on securely. Also get a visual confirmation you have it attached properly; use a mirror if you have to
3. Position air intake hose clamp nuts for easier access for future projects
4. Pre-install oil separator oil dipstick hose to dipstick guide tube before assembly
5. Insert the oil dipstick o-ring onto the base of the guide tube before installation. Before fully inserting the guide tube to the engine port, tuck in the o-ring into the chamber and fully seat the guide tube
This job has a high level of difficulty. Some have rated it as a 7-8 based on oil change as level 1 and engine rebuild as level 10. Do allocate at least 5 – 7 hours of work depending on your level of proficiency. Hopefully the instruction above brings the level of difficulty down by one and shave off an hour or two off the project.
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E46 325i Mods
Writeup by: Nicker