towing with a 607 ?

[christi]

It says in the owners manual for my 607 "For vehicles with a 2.2 litre 16V HDI engine with automatic gearbox, towing is not possible"

Why

You can tow with a 2.2 HDI manual, so the engine isn't the problem
and you can tow with a V6 auto so the gearbox isn't the problem
what is the problem?

also on the towing page it lists Kerb weight, Gross vehicle weight, Gross train weight, but then against Braked trailer weight and Recommended nose weight there is just a "-" for all variants of the car.

Against the 2.2 HDI auto it says Gross vehicle weight 2130 and Gross train weight 3330 (12% gradient) and 3630 (8% gradient) so there is plenty of scope there for towing without getting into trouble with the police.

Anyone any ideas?

[Piston Broke]

Alas, the V6 HDi uses a 6 speed auto/tiptronic box whic differs greatly to the the 4 speed/tiptronic job on the 4 cylinder cars, so that is the likely weak link.

Speak to a transmission specialist as it might be possible to add a gearbox oil cooler or similar, and get yourself towing.

[christi]

sorry, I meant that you can tow with the V6 petrol engine.
Mine is an early 2001 (actually manufactured Dec 2000) so it's a very early 607.
I think that the early 607 autos all had the 4HP20 transmission whether 4 cyl diesel or V6 petrol.
I also think that mine has a transmission cooler already, one of those ones that connects to the engine coolant radiator.
Maybe the combined heat load of the engine and transmission is higher than the V6 petrol when towing hard??
The transmission has a temperature sensor in it but the signal is only fed to the transmission ECU. Maybe there is a way to intercept the signal and feed it to a discreet guage somewhere.
I can't imagine that any of this is an issue for a little camping trailer or something anyway.

[Piston Broke]

I dunno for sure. I'm not at home and can't access the 'box.

Therek4 not limitations on any of the power units, so the tranny still seems the likely weak link, if there is indeed one.

I'd be inclined to stick your VIN into Servicebox and do some comparisons of the exact transmission type and derivative of your car gainst the other engined models, see what the exact variants are.

If all else fails you could try contacting the egg heads at Coventry for advice.

[christi]

I had a look under the bonnet, and actually I don't see any evidence of a transmission coolant circuit. Maybe it doesn't have a cooler which might explain it.
I don't think it would be an issue for a small trailer though.

update: I realised that on other Peugeots the transmission heat exchange has hoses that go to the thermostat housing, not to the radiator.
Maybe the transmission is fed with "warm" water rather than cold.
The weather's too bad to go and look now.

[christi]

here is a picture of the oil cooler


and here is a picture of the page in the owners manual that says I can't tow anything

[frank]

its the viarient of AL4 auto box which has trouble coping with added weight

[christi]

it's completely different to the AL4 which is made by Siemens.
The 4HP20 is made by ZF and is fitted to loads of cars, including the V6 petrol version which is allowed to tow.
I called Peugeot UK and they could not find any reference to the statement in the handbook and couldn't understand why it's there. They said that they don't have any data for my year of car at all so can't give me any advice :-(

[3008ismybaby]

Do they mean you are not allowed to tow the vehicle when it is broken down, as without the engine running you will have no brake servo operation, no power steering, and no lubrication of the auto gearbox, as with most autos with no engine running the gearbox oil pump is not operating and towing the vehicle is likely to cause damage to the gearbox.