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Ford Mondeo Car wont start, suspected fuel problems

2002 Ford Mondeo Problem

AutoInsider Ref#: 10925
Use this number to refer to this problem
CarFord Mondeo 2.0 Diesel TDDI
Year2002
OwnerAllan Samson
Posted23/11/2011


More Ford and Mondeo problems
The Problem:

Hi my petrol light came on when i finished work and so i put £8 worth of diesel in which was enough to get me home. The car was driving fine before the petrol station and I am 100% sure i put the correct fuel in. Approx 2 miles down the road my car started stuttering and had loss of power feeling like i had run out of fuel. I pulled off the road and asked to be towed to a petrol station where i put £60 on diesel in to try and dilute what i can only assume was contaminated fuel then towed home as i couldnt restart the car. An hour later i tried the car and it fired up first time and drove for exactly 2.5 miles before stuttering and stopping. Left it an hour again fired up lovely and drove for exactly 2.5 miles again. This has happened on 4 occasions in total where it has always gone 2.5 miles. I suspected low pressure fuel pump failure but a friend said to run the car and at the same time crack the nuts a fraction on the pipes going into the injectors and if fuel comes out the pump is working. I did this and it had fuel coming out which has left me stumped but when i opened the nuts the car died and wont restart at all???? I have tightened all nuts back up but my car still wont start, any help would be greatly appreciated as it is coming up to christmas and money is tight and I cant afford to just take it to a garage?





Solution 1


Suggested Solution

allan. I had exactly the same problem with my mondeo diesel a while back. Had auto electricians out to plug it in, no fault codes came up. Had my brother look, even considered puttin an external fuel pump in the boot. Spoke to a guy from AA and if told me it most likely a cam shaft position sensor. Located at front of engine 2 screws holdin it in place. Went too ford dealer paid just under 20 quid for a new 1. Replaced it in less than 5 mins. Never had a problem with it since. Hope this helps. :)





Posted on Wednesday 23rd of November 2011

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From Original Poster



Cheers Mark i will try this tomorrow





Posted on Wednesday 23rd of November 2011

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Solution 2


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Good solution suggested by " marc fletcher " , all the symptoms of cam sensor .If not that (which it usally is ) check crankshaft sensor .





Posted on Wednesday 23rd of November 2011

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From Original Poster



Apparently Ford say there is no camshaft sensor on the 2002 TDDI, would replacing the crank shaft sensor possibly work guys or is it completely different?






Posted on Thursday 24th of November 2011

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Solution 3


Suggested Solution

Looks like that year / model doesn't have one .This is for later model ,

Ford Mondeo III (B5Y) 2.0 16V DI / TDDi / TDCi › Sensor / Probe › Hella 6PU 009 121-681

Sensor, camshaft position for Ford Mondeo III (B5Y) 2.0 16V DI / TDDi / TDCi
Part Number: 6PU 009 121-681

21,50 EUR
incl. 19 % Tax,Shipping Info

Vehicle-specific Criteria
•From construction year: 03.2006

Criteria
•Has the same colour as the orginal part: Smoke Grey
•Number of ports:

Certainly worth checking the crank shaft sensor .






Posted on Thursday 24th of November 2011

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Solution 4


Suggested Solution

Hi Allan,

From what you have described i am more inclined to say its a fuelling issue.

Firstly by opening the diesel line you have allowed air into the fuel system. the car will not start now as the fuel lines need to be primed. Try turning the ignition on to the second point for 5 seconds and off several times and then see if that starts it. If not you will need to remove the diesel filter fill it with diesel and then prime the whole system manually by puchasing a hand pump usually readily available from a parts store, about ten pounds or so, and bleed it that way. (check mondeo forums for more in depth instructions as this is a novice mistake and happens all the time with them)

Now down to the main fault, dont go on your mates advice! These cars run on very high fuel pressure usually between three and five bar, just opening the fuel line will only show if theres fuel there, not what pressure its under. when you first start the car modern engines automatically prime the system to the correct pressure, but if its not getting enough fuel the pressure will eventually dip too low for the car to function and eventually stop. Two to three miles is about all you would get from a faulty pump.

Get it running and get it pressure tested first. If it does come back with low fuel pressure you will be looking to replace the fuel pump sender within the tank. Also the bracket which secures the holder to the base of the tank only has a small opening in it to allow fuel through to the pick up and this could have became blocked with deposits or sh*t which you always find on base of the tank.

My gut instinct is that £68 worth of diesel means it must have been rather low on fuel and filling it could have easily dislodged deposits on base of the tank.

If it does say its low pressure i would strongly advise you to seek a garage to do the work as working with fuel is highly dangerous and you have a full tank of it that will need to be removed. If however you choose to do the work yourself then leave another comment and i will send instructions to how i would do it.






Posted on Friday 25th of November 2011

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Solution 5


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I hear the phrase "just filled it up" and I hear alarm bells.
and right after that it fails!hmm.
Take off the fuel filter carefully and empty the contents into a container,go have cuppa while this is happening,a vital mechanics aid.
now have a looksee at the contents,your looking for pure diesel,what I suspect you'll see is diesel on top of a layer of water in the bottom of the container.
It might be crank/cam or other sensor,or it might be contaminated fuel,something I have to say I'm seeing more and more.






Posted on Friday 25th of November 2011

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From Original Poster



Hi, Sorry I haven't updated for a couple of days but been working. Anyway, primed the system today and the car fired up lovely, drove for a mile and again stuttered and stopped as if it had run out of fuel. With the ignition on got under the car and couldn't hear the fuel pump running, Split a pipe between pump and filter and no fuel came out so i thought i would remove the pump and replace it. When I removed the pump (by the way the pump is not in the tank like on some it is next to the tank underneath the car held outside the tank by a bracket)I checked it with a 12V supply from the battery and the pump works fine? will check in the next few days but does it sound like an electrical problem with getting the power supply yo the pump??





Posted on Wednesday 30th of November 2011

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From Original Poster



Forgot to mention that i have also changed the crankshaft sensor and made no difference






Posted on Wednesday 30th of November 2011

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Hi all,
Just a quick update, run further tests on the fuel pump when it was off the car powered by an independant 12v supply and found that the pump worked but wasnt very powerful and also cut out. Changed the fuel pump started like a dream 40 miles later still running so well pleased with all your help i recieved on these pages.






Posted on Friday 2nd of December 2011

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