how to mend it - Fix appliances, electricals, gadgets, cars... Ask for free help
:: home
:: add a question
:: search
:: help
:: most recent
:: unanswered
   Search: Go 
Fixed for free!
Ask Your Question

These categories may also be of interest ...

Vehicles, Mobile Homes

Vehicles, Motorcycles

Vehicles, Tractors

Vehicles, Trailers

Vehicles, Vans

Full list

... mend, fix, or repair just about anything.

Help someone
  Are you good at fixing things?  

Click here to help

Fault info.
Click here for Florabest repair information.
First time? costs nothing to use and you can ask a question without an account or logging in.

Click here to ask a question.


Who answers the questions?

Other users of provide the answers. The more detail and information you provide in your question the easier it is for others to help you.

Search for a fix
How can I fix my
Mend it
Why won't my engine keep running?
Categories > Mend Vehicles, Cars > Question
Q & As - mend, repair, fix vehicles, cars, car, mechanic, engine, noise, used car, auto, auto repairNavigate to ...
Vehicles, Cars (58003 other questions)
Other categories
Add a question

Mend > Cars

Question - mend, repair, fix


Our Peugeot 806 automatic drives brilliantly but every now and then the "D" for "Drive" flashes on the dashboard. This is normally at around 30mph and does not last very long. The car drives fine at all speeds, both locally and long distance but has been doing this for a while. Does anyone have any advice?

August 2009

Need to mend your Peugeot 806 car?

To add an answer, click here To add a new question, click here To find all other questions, click here

Answers - mend, repair, fix

The gearbox in the Peugeot 806 is the "AL4".
This is supposedly a "Sealed for Life" gearbox and the manufacturer does not even supply a "Dip Stick" on these gearboxes as they state it will last a life time. (the problem is, how long is a "Life time")

The gearbox is controlled by a set of electric valves (as opposed to the usual hydraulic ones).
Gearbox Oil pressure is governed by these valves and when they become worn, they cannot supply the correct amount of pressure. Thus the gearbox computer senses that there is a pressure fault and imposes "Limp Home Mode".

A worn Torque Convertor can also cause the same symptoms as it fails to deliver the fluid drive.
The torque convertor "Slip" is noticeable in 1st and 2nd gear. If you watch your engine temperature gauge as you drive up a steep hill, you will notice an increase in temperature during 1st and 2nd gear travel which is due to the convertor slipping.
Once the gearbox gets into 3rd gear, a "Pawl" in the gearbox engages and the gearbox goes into direct drive and eliminates the torque convertor slipping, the result being that if the steep hill was long enough, you would then see the engine temperature start to drop when 3rd gear was reached.

So the faulty gearbox is either down to Torque Convertor wear or Electric Valve wear.

The valve wear can be remedied by buying a refurbished valve block (aprox £350 exchange) which is possible to do if you are handy with the tools. (there is also a kit available whoch allows you to change the pressure valve only, but requires a bit of skill with a reaming kit and a little more know how).

The Torque Convertor slip can only be remedied by exchanging the unit which means a Gearbox Off job.

Either way it is an expensive remedy and you have to consider whether to just cut your losses and get rid of the vehicle.

The Pegeot/Citroen AL4 gearboxes are notoriously poor and should be avoided at all costs.

Stephen H
July 2012

I'm asking a question of Andrew about the work he had done back in September on his 2001 806 LX auto - I'm having exactly the same problem with the same model/year 806 going into limp home mode when it is cold - it is fine once the car has warmed up and is restarted. Changed the gearbox oil twice in quick succession as when checked each time it was black. The fault is still as bad as ever. Been told its either the torque converter or the whole gearbox needs changing. Just about had enough of it as the fault happens so often. Any advice would be great.

February 2010

Polly, I have a 2001 806 LX auto and had problems with clunky gear changes which lead to the car going into limp home mode - 3rd gear plus flashing display. This continues until the car is restarted. A gearbox specialist did £1400 of work on it nine months ago and it has been OK. In the last week new problems have appeared - sometimes when slowing down, the car seems to go into neutral so it is not ready to start up again. This can make it roll back or engage gear again with a sharp jerk. It is going back to the gearbox man next week. I wonder if the autobox is a problem area for 806s? I can tell you a bit more about what they did if you are interested. Andrew

September 2009

To add an answer, click here    

Add An Answer Form

Add your answer using the form below ...

Your answer:

(Add your answer here. Try to include as much detail as possible.)
Your name:

(Enter your name as you wish it to be displayed.)
Other questions in this category - Vehicles, Cars
Peugeot handbrake adjustment how 806 model?

How to adjust peugeot 806 handbrake...

Click here for the repair.
auto gearbox diagrams?

peugeot 806 auto gearbox diagrams...

Click here for how to mend it.

Hi, I have a n 806 and due to a new battery, I lost the radio/cd etc... I have the security code, but I can't seem to figure out how to enter a code which has an 8 and 0 in it, when the numeric buttons only go up to 6? I've tried repeatedly pressing the digits, I've tried all the arrow buttons, I've...

Click here for the repair.
Torque settings for rear wheel bearings Peugeot 806?

Torque settings for rear wheel bearings Peugeot 806 1.9 sltd 1996?...

Click here for the repair.
Torque settings for front wheel bearings Peugeot 806?

Please could someone advise the front wheel bearing settings for a Peugeot 806 1.9 turbo Diesel 1996. Many thanks....

Click here for the repair.
Peugeot 806 paint code?

Where is the paint code on a Peugeot 806?...

Click here for the repair.
peugeot 806 centrel locking ?

lights flash but doors do not lock...

Click here for the fix.
peugeot 806 centrel ?

lights flash but doors do not lock what can i try...

Click here for the repair.
Fix what?
Furnishings, Laminate Flooring - fix/mend/repair/service information
Musical Instruments, Drums - fix/mend/repair/service information
Vehicles, Vans - fix/mend/repair/service information
Help wanted!
Miele washing machine now working. Really appreciated your advice.

Oct 2020

Mend it
Where can I find help about USB?
All appliances!

To mend any household, kitchen, or other electrical appliance start here.

To search for repair advice click here.

To find out how to mend it click here.

Mend it
How can I repair my Nokia 3310?
Fault find
Click here to fix Sears products.

Attempting repairs can be dangerous.
In many instances work should only be undertaken by a qualified professional.
Ensure you have read our Small Print page before using information supplied via this website.

©  2003 vE
We use Cookies. See our Privacy Policy.