2004 Peugeot 307 AL4 Automatic Gearbox Issue
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Thread: 2004 Peugeot 307 AL4 Automatic Gearbox Issue

  1. #1
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    Default 2004 Peugeot 307 AL4 Automatic Gearbox Issue

    Hello everyone,

    I went to search the forum for the tricks to resolving AL4 woes - but the posts have gone! What happened?

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    So, I have recently had a couple of issues where the gearbox has shifted out of 4th (twice in exactly the same spot in exactly the same journey, followed by another event today on a completely different route).

    Each time I have simply turned the car off and then on again, then continued on my way with no further issue, but there is an issue I wish to resolve. I gather the first thing to do would be to top up the oil - what's the slippery stuff of choice?

    Is it worth changing filters at the same time?

    Is it worthwhile attempting to replace solenoids as well?


    Thanks,

    Ewan

  2. #2
    1000+ Posts dmccurtayne's Avatar
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    Have you had it scanned do you have p06 line pressure fault


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    No - I'm about to do that later this evening. I will post the information when I get it.

  4. #4
    1000+ Posts dmccurtayne's Avatar
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    Iím down in Newcastle if you need help


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    PM sent.

  6. #6
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    I've got a good AL4 from a 2 litre Xsara available, not expensive but in Melbourne.

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    It looks like it has the P06 failure, as well as P26 (Injection Throttle Potentiometer?):

    Permanent fault. Fault in pressure regulation (Variation / recommendation) .
    fault code : 06
    fault appearance counter : 2
    engine speed : 2048 rpm
    turbine speed : 2048 rpm
    AUTOMATIC GEARBOX OUTPUT : 2272 rpm
    oil pressure : 3.65 bar(s)
    guide pressure : 3.6 bar(s)
    gear engaged : 4 locked up
    Position of the gear lever : D
    converter : de-bypassed
    output EVM : activated
    OIL TEMPERATURE : 45 deg. C
    accelerator position : 14 %
    engine torque theoretical CAN : 86 Nm
    control unit supply voltage : 13.9 Volt(s)


    Remote permanent fault. Injection throttle potentiometer (CAN). No signal.
    fault code : 26
    fault appearance counter : 2
    engine speed : 2048 rpm
    turbine speed : 2048 rpm
    AUTOMATIC GEARBOX OUTPUT : 2272 rpm
    oil pressure : 3.65 bar(s)
    guide pressure : 3.6 bar(s)
    gear engaged : 4 locked up
    Position of the gear lever : D
    converter : de-bypassed
    output EVM : activated
    OIL TEMPERATURE : 45 deg. C
    accelerator position : 14 %
    engine torque theoretical CAN : 86 Nm
    control unit supply voltage : 13.9 Volt(s)

  8. #8
    1000+ Posts dmccurtayne's Avatar
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    That second fault is pretty standard after a p06 valves and oil needed


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  9. #9
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    A couple of questions:

    1. Is it possible/recommended to remove the AL4 gearbox cover without removing the radiator when replacing solenoids?

    2. Is it possible/recommended to use the old gearbox seal when refitting the AL4 gearbox cover?


    Thanks,

    Ewan

  10. #10
    1000+ Posts dmccurtayne's Avatar
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    Yes and yes


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    The other thing 2 check as my wife's C5 with AL4 is to check the neutral position switch on top to the gearbox is set correctly by measuring 0 ohms across the 2 terminals. My wifes doesn't and no adjustment fixes the issue but I have a spare switch to install when I get around to it. We just live with this issue after rebuilding the AL4.

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    I have a perfectly good AL4 available if anyone needs one. Out of a 2003 XSara 2 litre which was rear ended.

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    Graham,

    where are you, and how much do you want for it?

  14. #14
    1000+ Posts dmccurtayne's Avatar
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    Diff ratios and emission references need to be confirmed before you buy a second hand box they are all different


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    David S likes this.
    Garage C5 X7 4008
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    Fellow Frogger! dimistyle's Avatar
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    You will need to confirm auto box number stamped to the outer case, wheel cover removed and case cleaned off to read it.
    Usually 6 alpha- numerical characters.

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    Quote Originally Posted by dukbilt1 View Post
    Graham,

    where are you, and how much do you want for it?
    Dandenong, Melbourne. Won't want a lot, it is of no use to me.

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    So - over the last month or so, I have:

    1. Performed part fluid changes. Penrite ATF was on special! No great change. Original fluid was a morbid grey colour.

    2. Changed the valves - thanks to advice from this forum, and dmccurtayne for his insight and the valves themselves. It took about 4 hours in my garage but the job wasn't particularly difficult.

    The car runs like a dream now - thank you everyone!
    dimistyle likes this.

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