407HDI not playing nice
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Thread: 407HDI not playing nice

  1. #1
    Tadpole
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    Default 407HDI not playing nice

    Hi, I have a Peugeot 407 2.0 HDI 2006 auto with 105000km and have the issue where if I accelerate firmly (not put my foot down like a leadfoot) from a complete stop, will suddenly over rev severely, usually when going into 3rd and sometimes 4th gear. Sometimes this has happened in mid drive e.g. if traffic has suddenly started to move on the freeway and I have the opportunity to accelerate. If I driver more like "driving miss daisy" she doesn't do it. When she does it I release the accelerator immediately and she knocks back into gear. It's been doing it for a while and it's driving me crazy. I haven't found myself in the position of having to get out of the way suddenly, but if I did I know I wouldn't be able to because of the issue. If I drive her in manual mode she doesn't do it.

    Also, there have been times when I get a hesitation thing going on, usually around 1800rpm and feels like I'm sitting in a rocking chair. If I accelerate to get past it, again has caused the over rev issue.

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    Have taken it to Peugeot and as per usual, they don't know what is causing it and no fault codes show. And being female, not in the mood to get ripped off or given the run around.

    Can anyone help or give me an idea of what might be causing this? Has anyone had this issue with their 407? Thanks

  2. #2
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    Have you checked the auto transmission oil level?
    is it a nice red coloured?
    does it smell burnt?

    im not familiar with these transmissions but your bands may be worn or need adjusting

  3. #3
    Contented Peugeot Driver addo's Avatar
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    Almost certainly this is the AM6 automatic. It's not a Peugeot specific gearbox and the issue may be best raised with an automatic specialist.

    New valve bodies are sometimes fitted, this is around the $2K mark at local prices, a bit less if the parts are bought overseas. I wouldn't recommend fitting used parts as you may have the same fault again soon enough.
    shanadoo likes this.

  4. #4
    TEC
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    The dealers say the AM6 in these Pugs do not have to be serviced. You will need to service the trans every 30,000 to 40,000. I have just serviced the trans in my 07 407 HDi. Very simple job. You will need 8lts of Toyota Type T-1V transmission fluid or equivalent. Drain and run until warm, then drain again as the trans fluid will be black as anything if it has not been changed until now. This would be the cheapest first step to take. The fluid is about $80.00 and the labour about 1 to 1.5 Hrs There is no level plug. Just replace the exact amount of fluid that was drained out. That may give you an idea of the cost in case you have to go a trans place. Hope this post helps and good luck with AM6.

  5. #5
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    Quote Originally Posted by TEC View Post
    The dealers say the AM6 in these Pugs do not have to be serviced. You will need to service the trans every 30,000 to 40,000. I have just serviced the trans in my 07 407 HDi. Very simple job. You will need 8lts of Toyota Type T-1V transmission fluid or equivalent. Drain and run until warm, then drain again as the trans fluid will be black as anything if it has not been changed until now. This would be the cheapest first step to take. The fluid is about $80.00 and the labour about 1 to 1.5 Hrs There is no level plug. Just replace the exact amount of fluid that was drained out. That may give you an idea of the cost in case you have to go a trans place. Hope this post helps and good luck with AM6.
    Is there a guide on this somewhere, including where the drain and fill plug are?
    Is the AM6 the same gearbox in the 2007 Citroen C5 2l Hdi? I have never serviced it, now 190,000kms.

  6. #6
    Tadpole
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    Thanks so much guys. I will look into these asap.

    I thought I might have to get rid of it but would hate to as, apart from this, it has been lovely to drive.

    I'll keep you all posted. Cheers!

  7. #7
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    Georgehifi put up a how-to at 307 2.0 HDI T6 auto ATF oil change?

    There is an excellent guide in French (for the box in 6 cyl engines) at VIDANGE BVA AISIN TF-80SC (AM6 - Made Books PDF File or at https://www.fichier-pdf.fr/2013/05/2...idange-bva.pdf. If French isn't your thing, translate with google.

    It's a Japanese unit, and it is usually easier and cheaper to get the special fluid from a Toyota dealer than from a Peugeot dealer. Check both.
    Last edited by seasink; 16th November 2015 at 09:06 PM.

  8. #8
    1000+ Posts robmac's Avatar
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    Quote Originally Posted by seasink View Post
    Georgehifi put up a how-to at 307 2.0 HDI T6 auto ATF oil change?

    There is an excellent guide in French (for the box in 6 cyl engines) at VIDANGE BVA AISIN TF-80SC (AM6 - Made Books PDF File or at https://www.fichier-pdf.fr/2013/05/2...idange-bva.pdf. If French isn't your thing, translate with google.

    It's a Japanese unit, and it is usually easier and cheaper to get the special fluid from a Toyota dealer than from a Peugeot dealer. Check both.
    If it's Toyota T-1V ATF. Then use Penrite Full synthetic ATF. I used Penrite as replacement in my Toyota Van and it was a far superior fliud for shift smoothness and lasted far longer the T-1V. A lot cheaper too.
    The less one interacts with rude, ignorant, critical and argumentative members. The more peaceful life becomes.

  9. #9
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    To change fluid in AM6 box is as easy as. Once at normal operating temp just dump all the fluid (tools, 17mm allen key and torx key, either 40 or 45) and don't bother about measuring how much comes out. Let it all drain and then replace the plug with the 17mm allen key and leave the center plug out, the big plug has a stand pipe that sets the level, fill through the drain hole with a pump till it starts to dribble, then start engine and put in "Park" and continue filling till it dribbles again. Replace the center drain plug and go a for a 15/20 minute drive and repeat the whole process over again.

    For the pump I used one of those cheap plastic pots that has a pump on top and fitted a plastic hose that fits up the drain hole. I blocked off the top of the hose and cut a hole in the side so that when you pump the fluid goes in sideways and stays there.

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