308 AL4 Automatic Transmission - Rough shift from 1st to 2nd gear

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FarokJanos
Posts: 5
Joined: 08 Jul 2024, 18:38

308 AL4 Automatic Transmission - Rough shift from 1st to 2nd gear

Post by FarokJanos »

Hi!
My 308 1.6 VTi made in 2009 has the AL4 4-speed automatic transmission which shifts roughly from 1st to 2nd gear, every other gear changes are smooth. The car has ≈ 150K kilometer mileage with no gearbox ATF fluid change.
What could be the issue?
Thank you.
ozvtr
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Joined: 13 Oct 2020, 01:11
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Re: 308 AL4 Automatic Transmission - Rough shift from 1st to 2nd gear

Post by ozvtr »

Could be a lot of things, from clutch pack to brake band to hydraulic actuator to electro valve.
The easy thing to do is to change is the fluid.
PSA says the fluid is "sealed for life"...it isn't! IMHO the fluid should be changed at 60,000Km intervals. But that's just my opinion. HOWEVER it does not last forever.
FarokJanos
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Joined: 08 Jul 2024, 18:38

Re: 308 AL4 Automatic Transmission - Rough shift from 1st to 2nd gear

Post by FarokJanos »

Thank you for hour anwser. I will book an appointment to my mechanic to change the gearbox fluid. Last question, since the gearbox fluid was not changed through those 150k kilometers then a sudden change from degraded dirty fluid to a fresh fluid would not make the gearbox to behave ‘abnormally’?
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Arkis
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Re: 308 AL4 Automatic Transmission - Rough shift from 1st to 2nd gear

Post by Arkis »

I bought a Peugeot with the same gearbox. It never had a gearbox oil change in 19 years of life. The oil smelled burned and was more like a water than oil. Trust me, new oil is deffinitelly better than old "watery stuff".
As a precaution I did one more oil change after a few thousand kilometers just in case the new oil loosens some gunk and it came out perfect. The oil was darker than new oil but no chunks.

Before you take it to a mechanik make sure He understands how oil change should be done on these trans. It's not a simple drain and fill like on a normal trans.
Citroen C4 Picasso 2013, 1.6 e-HDI 85kW
Peugeot 206, 2005, 1.4i 8v, 55kW
FarokJanos
Posts: 5
Joined: 08 Jul 2024, 18:38

Re: 308 AL4 Automatic Transmission - Rough shift from 1st to 2nd gear

Post by FarokJanos »

Thank you, I will ask him if he can do it. If he can not should i take my car to a automatic transmission specialist or a dealership?
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Arkis
Posts: 21
Joined: 14 May 2022, 11:14
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Re: 308 AL4 Automatic Transmission - Rough shift from 1st to 2nd gear

Post by Arkis »

It's nothing hard to do and He does not need special tools. Only thing quite atypical is that you need a 8mm square key. But if He works on PSA cars He probably has one, because some models use it on oil plugs.
It's just five minutes of reading and He can do it.
https://www.slideshare.net/slideshow/al ... e/52539713
Citroen C4 Picasso 2013, 1.6 e-HDI 85kW
Peugeot 206, 2005, 1.4i 8v, 55kW
FarokJanos
Posts: 5
Joined: 08 Jul 2024, 18:38

Re: 308 AL4 Automatic Transmission - Rough shift from 1st to 2nd gear

Post by FarokJanos »

Ok, thank you
ozvtr
Posts: 473
Joined: 13 Oct 2020, 01:11
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Re: 308 AL4 Automatic Transmission - Rough shift from 1st to 2nd gear

Post by ozvtr »

FarokJanos wrote: 12 Jul 2024, 06:40 Thank you for hour anwser. I will book an appointment to my mechanic to change the gearbox fluid. Last question, since the gearbox fluid was not changed through those 150k kilometers then a sudden change from degraded dirty fluid to a fresh fluid would not make the gearbox to behave ‘abnormally’?
That seems to be more of a problem with the older "fully mechanical" types of auto boxes. I've never heard of changing the fluid in an AL4 making the gearbox worse. Typically it makes it better or there is no change.
Of course you could discuss that with the mechanic, it's a relevant question.
FarokJanos
Posts: 5
Joined: 08 Jul 2024, 18:38

Re: 308 AL4 Automatic Transmission - Rough shift from 1st to 2nd gear

Post by FarokJanos »

Thanks. I will consult with my mechanic.