Hi everyone my Peugeot 207 auto sometimes when driving off the car makes a loud bang thump noise, when doing this it sometimes revs quite high and then goes into gear. I have had no warning lights or anything to tell me there is a problem.please could someone help
Many thanks
Peugeot 207 automatic thumps
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Re: Peugeot 207 automatic thumps
Changing the auto transmission fluid, ensuring its the right specification fluid, and the changing procedure and level checking is as per manufacturers spec is the only relatively low cost intervention.
It can be possible to "anticipate what its going to do" and back off the revs to minimise the "slipping and thumping" but it isnt a solution of course.
If the fluid change doesnt improve things, then unless you are a "5-spanner" DIY mechanic, unfazed by such things as replacing solenoids, valve bodies, or removing the entire box and rebuilding it, you are in the hands of the professional rebuilders and its going to be expensive.
As in James' reply to your intro post, if you post your VIN number up, Marc (Givemeabreak) will more than likely be along to give you chapter and verse on the autobox fitted to your car and recommended fluids/changing procedure.
REgards Neil
It can be possible to "anticipate what its going to do" and back off the revs to minimise the "slipping and thumping" but it isnt a solution of course.
If the fluid change doesnt improve things, then unless you are a "5-spanner" DIY mechanic, unfazed by such things as replacing solenoids, valve bodies, or removing the entire box and rebuilding it, you are in the hands of the professional rebuilders and its going to be expensive.
As in James' reply to your intro post, if you post your VIN number up, Marc (Givemeabreak) will more than likely be along to give you chapter and verse on the autobox fitted to your car and recommended fluids/changing procedure.
REgards Neil
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Re: Peugeot 207 automatic thumps
Thanks for replying my vin no is
VF3**************[VIN obfuscated, can be read by forum staff]
VF3**************[VIN obfuscated, can be read by forum staff]
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Re: Peugeot 207 automatic thumps
Is anybody able to help me please having car looked at soon but need to know what gearbox oil I need sorry if I seem to be impatient just need to know
Many thanks
Many thanks
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Re: Peugeot 207 automatic thumps
Give it a little time; Marc (who is the most likely person to give you the relevant information) is sometimes busy. Now he has access to the VIN he will be able to let you know a LOT about your car (what she had when she rolled out of the factory, the correct fluids, and so on). If you need to change the gearbox fluid you MUST use the correct fluid; anything else is likely to wreck it.
James
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Re: Peugeot 207 automatic thumps
Ok many thanks sorry really don't mean to pester I'm just a little worried sometimes when driving her as I'm new at driving having only past my test in April thanks for your reply.
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Re: Peugeot 207 automatic thumps
Yes, been a little busy helping others, but confirmed as AL4 gearbox on your 207.
So the recommended oil is ESSO ATF for 4HP20/AL4 gearboxes.
Are you going to be changing the oil yourself or leaving it to a garage?
So the recommended oil is ESSO ATF for 4HP20/AL4 gearboxes.
Are you going to be changing the oil yourself or leaving it to a garage?
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Re: Peugeot 207 automatic thumps
The AL4 transmissions frequently suffered from poor gear changes due to failing pressure regulation solenoids, and the design was updated with a new type of solenoid. I don't know if your car has the earlier or later solenoids fitted. Replacement of the solenoid is not a huge job, but the transmission ECU requires a software upgrade if the early type was previously fitted.
In any case, the car probably needs to have computer diagnostics done to determine the problem.
In any case, the car probably needs to have computer diagnostics done to determine the problem.
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Re: Peugeot 207 automatic thumps
Hi thank you so much for replying no a mechanic friend of mine will be doing it at his place of workGiveMeABreak wrote: ↑28 Oct 2019, 19:40 Yes, been a little busy helping others, but confirmed as AL4 gearbox on your 207.
So the recommended oil is ESSO ATF for 4HP20/AL4 gearboxes.
Are you going to be changing the oil yourself or leaving it to a garage?
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Re: Peugeot 207 automatic thumps
I'm sure your mechanic knows, but this is only a partial drain and refill as you can't fully drain the torque converter. So you'll be able to replace approx. 3Lts of ATF fluid only per change.
You'll also need to ensure the oil is at 60 °C before draining to ensure that any foreign particles are suspended in the fluid when draining. He'll also need to reset the gearbox oil counter with a suitable diagnostic tool (preferably PP2000).
I hope it's nothing more serious, but if there is a serious fault with the box it will go into a downgrade mode:
In the event of a gearbox malfunction, there are 2 possible configurations depending on the severity of the fault:
You'll also need to ensure the oil is at 60 °C before draining to ensure that any foreign particles are suspended in the fluid when draining. He'll also need to reset the gearbox oil counter with a suitable diagnostic tool (preferably PP2000).
I hope it's nothing more serious, but if there is a serious fault with the box it will go into a downgrade mode:
In the event of a gearbox malfunction, there are 2 possible configurations depending on the severity of the fault:
- Gearbox in back-up mode with a substitute programme (the default values are used)
- Gearbox in back-up mode with an emergency programme (3rd hydraulic)
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Re: Peugeot 207 automatic thumps
Thanks so much for the information, as I said in my first post I have had no warning lights or anything so it's a little strange thanks again