The easiest way to gain access to it is from under the car. Removal is easy, just remove the bolt and slowly pull the sensor out.
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Showing posts with label AL4 Transmission. Show all posts
Showing posts with label AL4 Transmission. Show all posts
Friday, February 25, 2011
AL4 Vehicle Speed Sensor
Since someone asked about the location of the vehicle speed sensor, it is part of the AL4 transmission and located near the drive shaft. I don't have pictures of my own, so here's some from the internet.
The easiest way to gain access to it is from under the car. Removal is easy, just remove the bolt and slowly pull the sensor out.
The easiest way to gain access to it is from under the car. Removal is easy, just remove the bolt and slowly pull the sensor out.
Thursday, December 30, 2010
AL4 Transmission Temperature Sensor
The instructions for replacing the AL4 transmission temperature sensor is at http://www.peugeot206cc.co.uk/repair-206/206/info/gb/b2cg83k3.htm
Thursday, October 21, 2010
ECU Update
The car had an ECU update today. The engine ECU was updated first, followed by the transmission ECU. The Peugeot Planet 2000 system was used to do all the updates and diagnostics.
This is a huge workshop, which services Audis and Peugeots. Next to it is the Audi showroom, where I had the chance to enjoy the breathtaking beauty of the Audi R8. Click here for pictures of the Audi R8 V8 4.2 FSI QUATTRO.
The Peugeot Planet 2000 system is connected to the Siemens BSI receptable under the driver's steering wheel.
The original ECU software was 9 years old, and there were many new updates since then, which took quite sometime to download into the ECU.
The technician checked all the settings one by one. One interesting finding was that the ECU was still in showroom mode... so he switched it off. Showroom mode allows customers to play around with the accessories with the engine off, thereby draining the battery. He also deactivated the original radio because the car is now fitted with a non-Peugeot unit. The transmission oil wear counter was reset. Fault alarms were all cleared. Pedal teaching was performed.
After all the updates, the car feels so much smoother and responsive now, and feels to have more power too. I managed to max out the car at 155km/h and 4000rpm. In the past it could only manage 148km/h, so there is indeed a performance gain.
This is a huge workshop, which services Audis and Peugeots. Next to it is the Audi showroom, where I had the chance to enjoy the breathtaking beauty of the Audi R8. Click here for pictures of the Audi R8 V8 4.2 FSI QUATTRO.
The Peugeot Planet 2000 system is connected to the Siemens BSI receptable under the driver's steering wheel.
The original ECU software was 9 years old, and there were many new updates since then, which took quite sometime to download into the ECU.
The technician checked all the settings one by one. One interesting finding was that the ECU was still in showroom mode... so he switched it off. Showroom mode allows customers to play around with the accessories with the engine off, thereby draining the battery. He also deactivated the original radio because the car is now fitted with a non-Peugeot unit. The transmission oil wear counter was reset. Fault alarms were all cleared. Pedal teaching was performed.
After all the updates, the car feels so much smoother and responsive now, and feels to have more power too. I managed to max out the car at 155km/h and 4000rpm. In the past it could only manage 148km/h, so there is indeed a performance gain.
AL4 Solenoid Valves
I finally changed the old problematic AL4 transmission solenoid valves (part number 2574.10) to the newer Borg Warner solenoid valves (part number 2574.16). The transmission ECU was also updated. The transmission is now as smooth as silk!
Older valve, part number 2574.10
New Borg Warner valve, part number 2574.16
Older valve, part number 2574.10
New Borg Warner valve, part number 2574.16
Sunday, June 13, 2010
AL4 Hydraulic Valve Block
After finding the AL4 transmission rebuild manual a few days ago, I had the confidence to dismantle the AL4 hydraulic valve block. The gear change has not been smooth and I've suspected sticky valves all along. The transmission oil is almost 7 years old and clocked 77,000km. Since I planned to do a transmission oil change anyway, I decided to clean the valve block before putting in new oil. Also cleaned was the oil pressure sensor, located just beneath the block.
WARNING! Don't try doing this on your own if you don't know what you are supposed to do and not familiar with hydraulic valves. Doing this wrong can permanently kill the transmission.
There are two square-shaped strong magnets at the bottom of the lid, to collect any metal bits.
Rust where there isn't supposed to be any. This is a sure sign of water getting into the transmission. In this tropical rainy weather, it is a good idea to change the oil frequently to get rid of any water.
This block is still using the old/obsolete type of solenoid valves part 2574.10. These should be replaced with the newer Borg Warner valves part 2574.16, which will require an ECU software update. But unfortunately there's no Peugeot service centre in town that can do this, so I'm stuck with the old valves for the time being. Anyway the valves are still working, so I'm not too bothered to change them yet.
These are the sequence electrovalves, EVS. I've switched EVS5 (reverse gear) with EVS2 (for 2nd gear and 4th gear) because shifting from 1st into 2nd gear is intermittently not smooth and I suspect EVS2 not working properly.
The webbing can be wiped clean using lint-free cloth. I used cleanroom wipes since I have lots of it. I also took out all the EVS and sequence valves to clean them and drain out the old oil. The main block and auxiliary block was separated to allow all the old oil to come out and allow cleaning of the webbing and plates.
The result of the cleaning and new oil is a smoother gear change.
WARNING! Don't try doing this on your own if you don't know what you are supposed to do and not familiar with hydraulic valves. Doing this wrong can permanently kill the transmission.
There are two square-shaped strong magnets at the bottom of the lid, to collect any metal bits.
Rust where there isn't supposed to be any. This is a sure sign of water getting into the transmission. In this tropical rainy weather, it is a good idea to change the oil frequently to get rid of any water.
This block is still using the old/obsolete type of solenoid valves part 2574.10. These should be replaced with the newer Borg Warner valves part 2574.16, which will require an ECU software update. But unfortunately there's no Peugeot service centre in town that can do this, so I'm stuck with the old valves for the time being. Anyway the valves are still working, so I'm not too bothered to change them yet.
These are the sequence electrovalves, EVS. I've switched EVS5 (reverse gear) with EVS2 (for 2nd gear and 4th gear) because shifting from 1st into 2nd gear is intermittently not smooth and I suspect EVS2 not working properly.
The webbing can be wiped clean using lint-free cloth. I used cleanroom wipes since I have lots of it. I also took out all the EVS and sequence valves to clean them and drain out the old oil. The main block and auxiliary block was separated to allow all the old oil to come out and allow cleaning of the webbing and plates.
The result of the cleaning and new oil is a smoother gear change.
Thursday, June 10, 2010
AL4 Transmission Rebuild Manual
Found gold today! The AL4 transmission rebuild manual is on Scribd at http://www.scribd.com/doc/13915310/AL4-DPO-transmission-rebuild-manual
Saturday, May 22, 2010
33 Way Modular Connector
Green Connectors A1-A12 : Multifunction switch
Yellow Connectors B1-B12 : Hydraulic block
Green Connectors C1-C3 : Oil pressure sensor
Yellow Connectors D1-D2 : Turbine speed sensor
Blue Connectors E1-E2 : Output speed sensor
Transmission oil somehow managed to find its way into the connectors, probably through the wires. This needs to be cleaned!
Monday, May 10, 2010
AL4 Transmission Breather Hose
Many people have debated on the existence of the AL4 transmission breather hose. To end the debate, here's a photo of it. It is located under the battery and looks L-shaped.
Saturday, May 1, 2010
AL4 Transmission Oil Level Check
The transmission has been behaving abnormally. It would hang on 1st gear for quite some time before engaging 2nd gear, whenever driven for the first time in the day. However it shifts fine for the rest of the day, but occasionally hangs on some of the gears. This is indicative of low transmission oil level.
To check the transmission oil level:
1. Drive the car to warm up the oil to about 60C.
2. Park the car on horizontal ground and chock the wheels.
3. Put the gear into Park position and put the handbrakes on.
4. With the engine running at idle speed, remove the level plug.
5. If oil streams out and then starts to drip, the oil level is correct. Close the level plug.
6. If oil drips out or does not flow at all, close the level plug, stop the engine, and add 0.5 litres of transmission oil through the filler hole.
7. Repeat the level checking procedure until the level is correct.
Too much oil may have the following consequences:
1. abnormal heating of the oil,
2. oil leaks.
Too little oil may damage the transmission.
The level plug is within the drain plug. The drain plug requires a 27mm spanner and the level plug requires a 19mm spanner. To check the oil level, only the level plug needs to be removed.
The filler plug can be accessed by removing the air intake hose and shifting the gear into Drive (with the engine off!). The surrounding area must be thoroughly cleaned to avoid any dirt and debris getting into the transmission and ruining it.
An 8mm square drive is required to open the filler plug. This can be bought from a hardware store or online from ebay seller NTR Trading Company.
The filler hole is about 14mm. Care must be taken to not drop anything into it.
A funnel and a long hose, not more than 14mm in diameter at the base, helps the transmission oil to flow into the bottom of the transmission. The blue tape marks the depth of the transmission bottom from the filler hole.
AL4 transmission oil ESSO ATF 4HP20.
AL4 transmission oil ESSO ATF 4HP20.Peugeot part number 9736.22.
The funnel with the hose inserted into the filler hole.
Sigh... after topping up the oil, the gear change is still not smooth, especially when engine is cold in the morning. I suspect there's some water in the transmission, since the car has a history of driving in flood water. Hmm... need to change out the oil in future.
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