diesel engines

[zairs]

I read the sticky about the differences between the D9 and D8, but the engines arent really talked about, I was looking at getting a diesel one, of which there are 4 variants of but then looks like they are even slightly different and have different bhp and mpg. two car i'm at ones a T reg 2.0 and the othe a V 2.0 have different stats and even a different tank size.
whats your view on these engines?

[highlander]

Disclaimer: I know very little about diesel 406s, as I don't own one. But then, I don't really know all that much about petrol 406s either. Someone with a bit more actual information should correct me because at least some of the following "information" will be factually incorrect.

D8 cars with diesel engines are traditional turbodiesel engines. They're supposedly more reliable, as there are fewer things on them that can go wrong. The 1.9 litre TD engine (fitted with a Bosch pump) can be run on vegetable oil. The 2.1 litre TD engine (fitted with a Siemens pump) can be, but you need to swap the pumps.


D9 cars with diesel engines are PSA's newer-style HDi engines, which are also turbodiesels, but are more fuel efficient as they are controlled by more electronic engine management systems. The HDi is also supposed to be a bit more powerful. All of the HDi engines can be remapped for additional power/economy.

The 2.2 HDi engines (146 BHP) have a particle filter, which again improves efficiency, but means they are costlier to run than the 2.0 90 BHP or 2.0 110 BHP engines. The 2.2 HDi (and, I believe, the 110 BHP version of the 2.0 HDi) also has a dual-mass flywheel, which can be costly to replace when the time comes.

Also, the way to tell the difference between the 90 BHP and 110 BHP HDi is whether or not the engine is fitted with an intercooler - the 90 BHP version doesn't have one, and the 110 BHP version does.


The period between T-reg and V-reg, however, is a crossover period - this is when Peugeot were transitioning the line from the D8 to the D9. There are some really odd beasts in this period. Our very own Plod drives a D8 car that was factory-fitted with an HDi engine. There are some T-reg petrol cars that look like D9s on the outside, but have a bit of D8 about their interior (spotted one of these in Aberdeen recently). If you see a car you like advertised on the net, post about it here and people will tell you if you're on to a winner.

Cheers
Graeme

[Welly]

Good answer Graeme,

The two cars being compared may well be a very late D8 and a proper D9 although I don't think the size of the fuel tank changed at all?

Generally speaking an old V/W reg HDi is quite likely to have some issues now unless the previous keeper has been really really keen on replacing things but as a guide.....The in-tank fuel pump can stop working (immobilises the car and costs £200.00), the rear engine mount is a weak point and can lead to damaging the front exhaust section and CAT (£200.00), the EGR valve is likely to be leaking (£120.00), the air conditioning is likely to be broken (£250/300.00), the clutch on a 110bhp is likely to be worn/slipping (£500/600.00) and a poorly maintained car is at risk of blowing its head gasket through poor maintenance of the cooling system. Not trying to scare you but if you want a HDi make sure its been looked after and had money spent on it when needed.

If you are on a tight budget then I would go for an older car of P/R/S reg era as these are much simpler and if you don't do many miles (say less than 10,000 per year) then don't shy away from a 2.0 Petrol as these are Ultra-Reliable.

[zairs]

there are three im looking at
http://www.autotrader.co.uk/classified/ ... ?logcode=p

http://www.autotrader.co.uk/classified/ ... ?logcode=p

and also the one on piston heads in my other thread, but if i compare the two in auto trader they have slightly different stats.
I think my fav is the dark blue one listed first

[highlander]

Don't understand why the stats pages are different as both these cars would appear to have the same engine - 2.0l HDi 110 BHP.

I don't like the way the one with the photos has no indication of mileage, and I don't like the way the one that does list the mileage doesn't show any photos.

My advice? Go see them both, test drive them.

Common 406 foibles:

- if the car has aircon, check it works and works well
- check the spare wheel well for signs of water ingress
- check the handbrake and the clutch both work well (the 406 typically has a heavy clutch, so don't let that worry you)
- check for rust; typically the 406 won't rust unless it's been in an accident of some sort
- check for any error messages or warnings on the dashboard and on the multi-function display screen in the console

Start it up and pop open the bonnet. Ask the owner to rev it a bit while you watch the engine. Excessive engine movement means the engine mounts may need to be replaced.

And finally, check the service history - the timing belt on the 406 should be replaced every 90,000 miles or so. If it's definitely not been done, you'll want to get it done to be on the safe side.

China Blue is almost certainly the nicest colour the 406 ever came in (mine is that colour). The 406 LX, despite being a low-end trim level, is a wonderfully comfortable and rewarding car to drive. If you get a good one, you'll find it grows on you very quickly.

[eoin27]

To be honest the China BLue one doesnt look the best. Few dents and scrapes, bumper missing foglight inserts. I'd put any money that its close to 250k miles. I know you're looking for a cheap runabout so perhaps a slightly older D8 estate would be more suitable. Less maintenence too as it has the older bullet proof 1.9TD engine. MPG would be slightly down too though, as would specification.

http://www.autotrader.co.uk/classified/ ... omyContent However, this D9 is near your location and looks good at first sight. Price negotiable

http://www.autotrader.co.uk/classified/ ... ?logcode=p or this!!!

[zairs]

I take it you are talking about the dark blue one, the china blue one doesn't have any pics.
Those other two are nice,but are more money, slower and worse mpg

[zairs]

I just asked about details of the dark blue one and am waiting for a reply

[swiss]

My D8 1.9 TD has 175k on the clock and with 89bhp isn't the quickest on four wheels. But it starts first time, every time, and if stuff goes wrong I can fix it without a degree in computing

Oh, and you put bio diesel, vegge oil, road tar or even, rumour has it, actual rocks through the fuel pump. The fuel pump may also be cranked up for extra go, and the turbo boost turned up to match. The engines were supposedly detuned by Peugeot, leaving room for tinkering ^_^

Oh yeah, and I get 45mpg without even trying

[STALLED]

NO SMOKE NO POKE!

But the diesels are fairly robust things - The only thing to be worried about is the Lucas injection pump failures in the 2.1TD, can be expensive to fix (well in AUS anyways)...

Either way, a well kept 406 will serve you well - I know ;)

[steve_earwig]

Yep, expensivo, but how many dead Lucas injection pumps have you heard about? When it started running lumpy according to Pug my 2.1's pump had gone for a burton, according to the injection specialists it was the needle lift sensor, which they duly changed and fixed the problem Besides, if it does go bang it can be replaced with the Bosch set up and then run on veg

[zairs]

i've found a nice 2.1 excutive that has had
HEADGASKET/EXHAUST VALVES/ H/BOLTS

-----VALVE SEALS/LAPPED IN----no wear seen in bores!!

WATER PUMP--CAM BELT KIT--OIL/FILTER
this is due to a water pump failure

is this likely to be can of worms or is the engine and head good enough to be ok?
whats the head made from?

[omega]

i've found a nice 2.1 excutive that has had
HEADGASKET/EXHAUST VALVES/ H/BOLTS

-----VALVE SEALS/LAPPED IN----no wear seen in bores!!

WATER PUMP--CAM BELT KIT--OIL/FILTER
this is due to a water pump failure

is this likely to be can of worms or is the engine and head good enough to be ok?
whats the head made from?

mine had this work done and 10000 miles later its still fine

[Gary406]

My D8 1.9 TD has 175k on the clock and with 89bhp isn't the quickest on four wheels. But it starts first time, every time, and if stuff goes wrong I can fix it without a degree in computing

Oh, and you put bio diesel, vegge oil, road tar or even, rumour has it, actual rocks through the fuel pump. The fuel pump may also be cranked up for extra go, and the turbo boost turned up to match. The engines were supposedly detuned by Peugeot, leaving room for tinkering ^_^

Oh yeah, and I get 45mpg without even trying

same here, brilliant car, i wont be upgrading to a HDi ever,, 1.9 TD anyday
costs just £40 to service it myself every 6 months , apart from droplink failure every 6 months i never ever gets any problems,
mines only got 120k on the clock returning 40mpg

HDi's are smoother , better MPG , faster , but these 1.9td's arnt that far behind mine pulls very well