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Old 06-09-2010
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mark christopher mark christopher is offline
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god some danjerois comments in here
Quote:
Originally Posted by coolcars782 View Post
Get a diagnostic test.

The lambda sensors could have gone, so could be worth checking those out and have a look to check see if they had already been replaced as there could be something else wrong down the line, they control the fuel mixture.

Carl
Lamba sensors on a Ford diesel..... really tell me more as i have never seen em in 20 plus years......

Quote:
Originally Posted by thomj316 View Post
Unplug the Mass air flow meter and see if it makes it any better, if it does, then you'll need to replace it. Im assuming if its a Pierburg and done more than 50k, then its knackered. If its a Bosch, then id be surprised if its gone below 100k.

The Mass air flow is a little box that sits on on the air intake between the filter and the manifold, also black in colour with a 6 or 7 pin connector going to it. Simply unplug (perfectly safe) and test the car out.

Failing that, you might have a faulty injector(s), if the spring has weakened then the effective duty cycle has been increased, thus allowing more fuel into the engine.

P.S, what mileage has she done?
Unpluging a maff and curing tue fault does not make the maff faulty. As all you doing is asking the pcm to use default settings. Which can mask your fault.


[QUOTE=dpackster1980;410538]Black smoke is over fueling, you normally get this type of thing when donkeys fit the plug in boxes that trick the ECU instead of a professional remap.

EGR valve is normally puts on the engine warning light it recirculates exhaust gasses back into the combustion chamber to cool combustion and increase effeciency (MPG). If there is a problem and it goes ignored then uncooled gasses pass through the turbo causing it to overheat and wreck the turbo bearings.

If the light hasn't come on then I would assume it's a mechanical issue and not sensor related.

I watched a program not so long ago about second hand cars and they had a Ford Mondeo ST on it, it was a 2.0 TDCi and when they were going on about faults they mentioned that in some cases the injectors went at 60k. The other fault was all the rear suspension bushes fail at 40k.

I think you are going to have to pay a garage the stupid £30 for running a diagnostic check.

Check out this link but it doesn't sound like a cheap fix.

http://uk.answers.yahoo.com/question...3135828AAvL0wh[/QUOTegr is there to get rid of nox not improve mpg.

Quote:
Originally Posted by Toadeh View Post
Doubt the diog will show anything. EGR is worth a try and check the hose for the turbo.

I've got the 1.8 version of yours and its never failed an MOT on emissions so wouldn't worry about it. If the engine light comes on then look at it
Air leak sounds the correct answer to me over fuel which is black smoke is also lack of air into the engine.
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