Farmer Giles

Hi,

just looking at a few mondeos and some of the earlier Mk3's are listed as TDDI not TDCI.

I've seen TDDI Focus's (Foci ? LOL..) but never a Mk3 Mondeo...

What's the difference between the two, any advantages or dis-advantages of one over the other ?

Do the TDDI engines still have pump / injector issues and DMF problems on higher milages ?

cheers
Martyn

Csm

TDDI are moon milers and are well known for 250-300k on the clock

They dont suffer injector issues etc

They are 115bhp iirc, 5 speed box, they do have dmf but never used to hear of failures untill the tdci came along with all its other issues on early models

my focus is a tddi and it drives like a new car for 11 years old and 104k on the clock, these are well known for 200k+ on them easily aswell

tddi with a remap and happy motoring for you

DazC

iTrader: (1)

The TDCIs are not bad as long as you use decent quality fuel, ideally from a station that has had new or recent fuel tanks. I've seen a car last only 30k with injector problems caused by running on supermarket fuel.

You can get more power and efficiency out of the TDCI but you probably wouldn't notice the difference between the 2.

The TDDI can suffer injector issues but it's rare. Usual signs is loss of power and slightly uneven running with no fault codes in the ECU. Rare but it does happen.

We maintain a TDDI Transit which has recently clocked over 400k miles, still on the original pump/injectors. It's had a dual mass and a starter though.

Csm

Or get a focus tddi like mine............. dont have DMFs its old school solid flywheel LOL

DazC

iTrader: (1)

There are a lot of conversions about now though so if you do get a car with a DMF then you can easily convert.

Farmer Giles

sound good so far.

Are the TDDI any less refined than the TDCI generally? or once up to temp there's little or no difference..

nosier cold starting or anything like that ?

Ta

DazC

iTrader: (1)

They run and drive a little smoother. The TDDI was never a bad engine in that respect but the common rail improved them.

Csm

TDDI is slightly more agricultural but hey its a diesel and buttons to run and maintain over a tdci

Farmer Giles

Final Q I promise..

I'm guessing the MPG on the TDCI is better, more modern engine and management etc but is there a huge difference of just a few MPG...

do you know what I could expect from the TDDI on a mixed cycle, urban and main roads..

My wifes car is only doing around 35 to the gallon so looking for a big improvement over that. I think I will still be better off even if Diesel is a few more pence per litre..

cheers all, appreciate it.

DanW@FastFord

iTrader: (1)

I also know cars that have had premature failures with 'posh fuel'. Most early fails of the injectors are due to badly designed pumps breaking up blocking the injectors, and nothing to do with the fuel.

The filter (if changed regularly) is very effective at stoping contaminants from the tank.

To the OP - If you're getting a cheaper, more leggy Mondeo I'd probably opt for the TDDI. It is more agricultural, not quite as frugal and not as quick - but if they do have pump/injector problems they cost less to put right - although you have got twice the number of pumps to worry about as they have a lift pump whereas the TDCIs don't.

As for MPG - it all depends on how you drive. But mixed urban I'd expect around 40mpg ish.

DazC

iTrader: (1)

Yes, I too have seen it but I have witnessed to my own cost the effects of poor quality (yet was within spec) fuel which ruined the injectors the moment the fuel ran through it. Fuel was tested to 4.78% biodiesel with minimal water in it yet stuck 4 sets of injectors shut. I just recommend to anyone that they use the best fuel they can after being bitten like that.

You can get replacement high pressure pumps for around Ł500 now but the injectors are still about Ł150 each.

Twins

iTrader: (18)

We have a mk3 tddi estate ,just coming up to 190k ,just did a run down to switzerland in it skiing, on one tank of fuel,was about 640miles

scholesyy

i unfortunately had the injectors go on my tddi when i had it at around 75k.

Not the cheapest thing to get fixed.

And yes, i had been running it on supermarket fuel!

I have a tdci now though and it feels far smoother and quieter to drive.

Pycyo

I'm going to buy today.i heave to choice from 2 1- is a 2,0 tddi 162000 miles on 2001 plate 5 speed and the second 1 is a 54 plate 2,0 tdci 112000 miles.please any idea wich one i beter.thanks

the mk1 kid

Her in doors had a TDDI focus until recently when she upgraded to a newer 1.6 TDCI mk2 and I have to say I miss it.

Not only does the TDCI not sound very nice (particularly when cold), but it doesn't tick over half as smoothly as the good ol TDDI did - that thing would start in -10 and not miss a single beat right from the off!

I understand the lift pumps get lazy in the TDDI's and eventually they won't start, but this isn't for many k miles...

Tom

DanW@FastFord

iTrader: (1)

Impossible to say without seeing the cars. Just don't pay more than a grand!

Pycyo

Ok thanks.they think is tdci look like they got problems but is newer but the tddi they say they are much better

Pycyo

Honest...what you will take the tddi with 162000 miles 5 speed or the tdci 112000 miles 6 speed.many thanks

daviddunlop83

iTrader: (7)

I used to have the tddi Mondeo before the ST so can't compare them really tbh as one has far more power.

As said the tddi can go on forever, a taxi driver I know had one with 440k on it. Clutch was only thing changed a couple of times.

The earlier tdci engines esp the ST were more common to injector issues due to the mapping of them.

My tddi had near 170k on it when I sold it still driving fine, again as said the lift pumps on them fail around 120k but you can buy a genuine bosch pump for around Ł120 (same pump from ford is around Ł500 lol)

Pycyo

Ok.thx

DanW@FastFord

iTrader: (1)

Depends on the history of the TDCI - If it's had recent injectors, clutch and DMF I'd get that - but it's impossible to say without seeing the cars as there are so many variables.

Twins

iTrader: (18)

tddi all day long

Our y plate mk3 estate had 250k on it when it got written off this year,all running well ,we bought it on 63k and had it 9 years and it never needed a clutch while we had it ,replaced it with another tddi mk3 estate on a 51 with 80k on it

Pycyo

Ok.thanks

Farmer Giles

Personally I would never buy a TDCI engined ford again..

But there will be plenty of people on here who have had loads of them and never had any issues..

The common issues are well known and if you can get one cheap enough or the issues already sorted (with proper evidence, not just on the sellers word) then it's cheap motoring..

RichieST

iTrader: (2)

I've got a mk3 TDDI, has covered 145,000 miles, I've done the last 20,000 in it. Has had an alternator, oil cooler thermostat but apart from that it's been good. Cost me Ł500 about 18 months ago, will keep it forever, it's a great little banger.

Pycyo

I just buy a mondeo tdci 136000 miles 1 owner from new but.the car is turning over but he will not start no lights on the dash.any idea.thanks

davidfox280585

tddi everytime

Pycyo

Any idea what can be.thanks

phil_rs

iTrader: (3)

Neither.... VAG 1.9 TDI