Also, for those who have change to Borg Warner`s Solenoid MUST updatetheir ECU (if the previous Solenoid is not Borg Warner`s)Solenoid Valves1.Replace the pressure regulation valve and the converter lock-up valves.2.Make sure the 2 seals behind the valve body are correctly fitted. Ifnecessary replace the seals.3.Tension the valve body bolts to 8 NM.4.After fitting the valve body adjust the selector index spring5.Adjust the multi-function switch.6.Before fitting the pan ensure the 2 magnets are present.7.Fill the transmission with new fluid and adjust the level.8.Update the transmission ECU software. The older software versions arenot compatible with the new Borg Warner valves. Oil Cooler advice from w100:Between the Citroen AL4 and Peugeot AL4, the oil cooler in Peugeot AL4 ismuch thinner than those in Citroen C5.

• 4hp20 Al4

(You can check and compare foryourself). Therefore, if you need to prolong your AL4 gearbox to avoidfuture spending. Follow these steps.1) Reposition your breather hose2) Replace your AL4 oil cooler with Citroen C5 oil cooler, which is muchthicker. With thicker oil cooler, the heat transfer is better. This way,your AL4 will work much better with cooler temp, smoother ride.Buy thethe C5 oil cooler yourself, it is cheaper this way rather than asking theworkshop to provide. Part number for C5 oil cooler is 2275.55 and Peugeotoil cooler is 2257.47. Retail around Rm1000+ for C5, but would suggest toget from NAZA as they claim to give good discount.You can get it from S`pore too.Remember last time got it from C&C at aroung Rm 850.3) After changing the oil cooler, replace the ATF together.

If you havejust replaced your ATF, then wait for the next replacement, so that youcan do it together by not wasting your money. 4) Replace your ATF every35-40K to keep the heat and pollution out of the system. Use ORIGINALPeugeot ATF. Part Number 9736.22. Price should not be more thanRm70/bottle. You need around 3 bottle for a 2 litre pack. With thisguidence, you should be able to minimize the failure.Kian Hua S`pore phone number.

More link for AL4:AL4 ATF Level Affecting Gear Shift Behaviour by seanswn:summary=1&Forum=ap319603972&access=1&status=1&subject=ATF+%2D+Affect+ShiftingHere's a post by Burnout from that thread, where the Mass Air Flow (MAF)sensor causes problem to the gearbox.' OK, my transmission 'problem' started about a couple of weeks agowhen my A4 gearshifts started to behave abnormally.1. In 'D' mode, it shifted late from 2nd to 3rd gear holding the rpmsto over 4000 before it decides to upshift with a slight jerk. I callit a sticky 2nd gear. This doesn't happen in tiptronic mode. I canmanually shift from 2nd to 3rd at any rpm.2.

A slight vibration could be felt on the steering column whenthe above happened.3. Best dark tranquility songs. Sometimes in tiptronic mode, when I manually shift from 2nd to 3rd,it would immediatelt drop back to 2nd automatically with a rise inrpm.4.

Once in a while, the transmission goes into limp mode, whetherit was in 'D' or in tiptronic mode. In this mode, only 3rd gearis operational until I pull over, switch off and restart.5. Occasionally there will be a slight shudder whenever I coast toa stop at traffic lights.6.

Lately, my idling became unstable and oscillates between 600 to1000 rpm. The car normally idles rock steady at 800 rpm. I had mymechanic clean the throttle body but it didn't solve this problem.Sent to M-Scope, said the problem is electrical, most probably a shortin the wiring harness or a malfunctioning solenoid valve. Sent toEH Autolink, said I need a transmission rebuild at RM8,500.It was point 6. That made me suspect maybe it is not a transmissionfault, but an air intake problem that is confusing the ECU and sendingthe wrong commands to the TCU, hence the abnormal gearshift behaviour.This morning, I took the car to my regular mechanic and asked him todisconnect the MAF (Mass Air Flow) Sensor, which I suspect isdefective, and Voila!

4hp20 Al4

Problem solved. Gearshifts are back to normal,no sticky gear, no jerks, no shudders, no limp mode.Temporarily, I am running rich as the ECU is compensating for the lackof air-flow information from the MAF, relying solely on defaultAir/Fuel ratios based on the speed sensor and the TPS (ThrottlePosition Sensor). My car is DBW (drive-by wire).

The erroneousvalues from the defective MAF are throwing the A/F ratio computationout of whack.The authorised S/C quoted me RM1,300 for a new MAF. I can get onefrom Singapore for around RM600. So now you know how much yourS/C can mark up on spare parts.Hopefully my experience can give Peugeot forummers (I own a 406 too)an alternative insight into troubleshooting the often dreadedtransmission problem. It can be as simple as a loose connection,or in my case, a defective MAF sensor. Konno81,I'm no expert nor am I user of the AL4, I'm driving the manual.

Jepakazoid,Every 30,000KM is what's recommended in the Citroen PDF. From other Pugowners, they've recommended 30,000-40,000KM (or every year).

It's UP to youto decide.