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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Sat, Jun-08-2019, 06:01:03 PM   #31
2003wmb
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Default Re: SMG Pump Maintenance/Troubleshooting: Complete Guide

SMG cog light
It is a 2006 MY.
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Old Sun, Jun-09-2019, 05:13:13 AM   #32
SMG cog light
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Default Re: SMG Pump Maintenance/Troubleshooting: Complete Guide

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Originally Posted by 2003wmb View Post
SMG cog light
I was looking at the the GOOD_M3 2.0 E46 M3 Build/Journal
and in one of the images it looks like the pressure sensor next to the temp sensor has 3 wires. Is this the pressure sensor or some other sensor? I'm curious because I thought the pressure sensors are a two wire sensor. Maybe newer model?
http://www.m3forum.net/m3forum/showt...=599036&page=5
Yes. That round sensor is the hydraulic pressure sensor.
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Old Sun, Jun-09-2019, 06:54:07 AM   #33
gigika
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Default Re: SMG Pump Maintenance/Troubleshooting: Complete Guide

...in the end, all of you guys forgot one thing more. SMG speed setting. I now drive mine how many 10 years ALWAYS in position 1. Forget stupid "snow setting or something". The lowest setting all the time, the lowest fatigue for the system. ...and the car drives just fine without no problems and also bliping every time when shifting (no stupid CSL softwares and so)
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Old Sun, Jun-09-2019, 05:19:40 PM   #34
2003wmb
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Default Re: SMG Pump Maintenance/Troubleshooting: Complete Guide

Hi SMG cog light
I have not taken a pump apart that's why I'm asking these questions.
So do the older models have a 2 wire pressure sensor and only the newer have a 3 wire sensor? or do all SMG II pumps have a 3 wire sensor? I was looking online at the senor and it seems to look like 2 wire sensor.
thanks for your response.
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Old Sun, Jun-09-2019, 06:17:40 PM   #35
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Default Re: SMG Pump Maintenance/Troubleshooting: Complete Guide

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Originally Posted by gigika View Post
...in the end, all of you guys forgot one thing more. SMG speed setting. I now drive mine how many 10 years ALWAYS in position 1. Forget stupid "snow setting or something". The lowest setting all the time, the lowest fatigue for the system. ...and the car drives just fine without no problems and also bliping every time when shifting (no stupid CSL softwares and so)
This post was irrelevant to the thread.
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Old Sun, Jun-09-2019, 06:21:41 PM   #36
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Default Re: SMG Pump Maintenance/Troubleshooting: Complete Guide

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Originally Posted by 2003wmb View Post
Hi SMG cog light
I have not taken a pump apart that's why I'm asking these questions.
So do the older models have a 2 wire pressure sensor and only the newer have a 3 wire sensor? or do all SMG II pumps have a 3 wire sensor? I was looking online at the senor and it seems to look like 2 wire sensor.
thanks for your response.
All of the pumps I have worked on have 3 wires going to the hydraulic pressure sensor. I also rarely have to replace that sensor because it does not fail as often as the temperature sensor. But if you are doing a full pump recondition/rebuild then I recommend that you replace both sensors and all of the seals and the accumulator and the motor. The only thing that doesn't fail or is built well are the actual solenoid valves. Just the solenoid valves seals fails.
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Old Mon, Jun-10-2019, 04:09:51 AM   #37
2003wmb
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Default Re: SMG Pump Maintenance/Troubleshooting: Complete Guide

SMG cog light thank you for clarifying my question about the pressure sensor.
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Old Mon, Jun-10-2019, 01:02:02 PM   #38
oceansize
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Default Re: SMG Pump Maintenance/Troubleshooting: Complete Guide

I just ordered the SMG relocation kit (built by some members on this forum) and burkhart SMG repair kit. I have zero issues other than I need a new project and since my pump is original and at 99k miles I figured this would suffice. I will be replacing the o-rings and sensors and what not as well.

I will take all related temperature and pressure measurements before and after and report back. I've got the schwaben scanner, autoenginuity, DIS, and INPA so I will see what each reports as a crosscheck of the various tools. Should be fun.
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2003 M3 Convertible SMG w/Hardtop | GC Coilovers and Camber Plates | ESS VT1-475 Gen 3 Supercharger | Stoptech Brakes
Apex ARC-8 19" Hypersilver | CSL SMG (and 255) Tune | RE Diablo Exhaust w/ SS Tips | RE Rasp Pipe
Redish Reinforcement Plates | Polyurethane Rear Subframe Bushings | Polyurethane Differential Bushings | Beisan Oil Pump Disk
Storm Motorwerks SMG Paddles | Two Tone Black/Grey Interior | Alcantara E-brake Boot
Very Recent Maintenance: FCABs | FCAs | RTABs | Motor Mounts | PS Hoses | Inner/Outer Tie Rods | End Links | Vanos Solenoid |
Driveshaft R&R | Flex Disc | Fan Clutch | Trans Fluid | Diff fluid
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Old Tue, Jun-11-2019, 10:07:42 PM   #39
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Default Re: SMG Pump Maintenance/Troubleshooting: Complete Guide

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Originally Posted by oceansize View Post
I just ordered the SMG relocation kit (built by some members on this forum) and burkhart SMG repair kit. I have zero issues other than I need a new project and since my pump is original and at 99k miles I figured this would suffice. I will be replacing the o-rings and sensors and what not as well.

I will take all related temperature and pressure measurements before and after and report back. I've got the schwaben scanner, autoenginuity, DIS, and INPA so I will see what each reports as a crosscheck of the various tools. Should be fun.
Your data will very much be appreciated, especially the pressure decay data.
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Old Tue, Jun-11-2019, 10:28:51 PM   #40
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Default SMG Pump Maintenance/Troubleshooting: Complete Guide

Mine goes from 66 bar to 47 bar in just under 5 minutes. I can’t remember if that was pre Burkhart motor or dying OEM motor. But that shouldn’t affect the accumulator or hydraulic seals anyways.

I know currently with any one shift, the SMG motor is adding pressure with no delay.
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Discussing SMG Pump Maintenance/Troubleshooting: Complete Guide in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)