Mk3 Mondeo (2.5 V6) Very poor running and EML light flashing
Discussion
I have been driving my Mk3 Mondeo Zetec S for a few days now and all has been fine - apart from a strange 'whooping' noise occasional when the car had been started and the steering wheel is turned or momentarily between 1st and 2nd gear??
Anyway i was going to have that investigated by my friend when he puts (hopefully) a fresh MOT on the car next week.
Last night i checked all the fluids and everything was fine, gave the car a bit of a spanking down the dual carriageway on an alternative route home and all was good.....
But this morning i started the car, and within a mile i noticed that the car was not pulling as cleanly as she normally does from a higher gear/low revs situation then the Engine Management light started flashing! I stopped the car and restarted it and at this point the car was running really rough throughout the rev range - but no EML light this time?
The car is currently low on fuel (the fuel light is on) but there is still some way between the needle and the empty marker, so i don't think its fuel?
Any ideas?
Anyway i was going to have that investigated by my friend when he puts (hopefully) a fresh MOT on the car next week.
Last night i checked all the fluids and everything was fine, gave the car a bit of a spanking down the dual carriageway on an alternative route home and all was good.....
But this morning i started the car, and within a mile i noticed that the car was not pulling as cleanly as she normally does from a higher gear/low revs situation then the Engine Management light started flashing! I stopped the car and restarted it and at this point the car was running really rough throughout the rev range - but no EML light this time?
The car is currently low on fuel (the fuel light is on) but there is still some way between the needle and the empty marker, so i don't think its fuel?
Any ideas?
Sulphur might mean cat.
Check the breather hose at the very back of the engine - often the cause of poor running. It runs from the back of the UIM on the right hand side, down under the throttle body and in between the two banks.
Not my image - but starts at the yellow circle...
Mine looked OK, but I changed it (about £30) and it solved the problem. I then put the old pipe under water and it had clearly turned porous!
Check the breather hose at the very back of the engine - often the cause of poor running. It runs from the back of the UIM on the right hand side, down under the throttle body and in between the two banks.
Not my image - but starts at the yellow circle...
Mine looked OK, but I changed it (about £30) and it solved the problem. I then put the old pipe under water and it had clearly turned porous!
Thanks for the feedback chaps..... I will have a look at the pipe (at the back of the engine).
Having driven the car back home tonight (short journey) i just could not get the misfire to go - it's there throughout the entire rev range. The EML light came on about 50m from my home. Tomorrow i have a friend coming round with a fault code reader.
The sulphure smell is faint, but there none the less and i would also appear to have the intermittent 'Moosing' noise from the airbox!!
Having driven the car back home tonight (short journey) i just could not get the misfire to go - it's there throughout the entire rev range. The EML light came on about 50m from my home. Tomorrow i have a friend coming round with a fault code reader.
The sulphure smell is faint, but there none the less and i would also appear to have the intermittent 'Moosing' noise from the airbox!!
Well, my friend let me down twice over the weekend with his code reader so decided to take a chance and replace the ignition parts (no evidence of the plugs having been changed @ 60K and the car has now covered 100K.
Managed to order
6x NGK Plugs
1x HAAS Ignition Coil
1x HT Lead set
1x Air filter (might aswell)
All for £105 from EuroCarParts - Need the car to be back on the road as soon as poss and i have next day delivery.
From what i can ascertain. The Inlet Manifold has to come off of the 3.0litre but the plugs can be changed with it in place - On the 2.5litre cars.
So i have ammassed the following tools:
3/8 Drive ratchet.
3/8 UJ.
2 small extensions and one slightly longer extension.
10mm Spark Plug socket.
I understand the fronts are fairly strait forward and i need to remove the coil pack anyway (to change it) and the rears are fiddly but not impossible?
Fingers crossed that it cures the problem.
As for the Moosing - I will buy a new hose thats 3x the lenght of the current one as i understand that can cure the problem?
Thank you for all the advice chaps - As usual PH comes to the rescue. I had put exactly the same post on the MK3 Mondeo Forum (Talk Ford) and not a single response did i receive)!
Managed to order
6x NGK Plugs
1x HAAS Ignition Coil
1x HT Lead set
1x Air filter (might aswell)
All for £105 from EuroCarParts - Need the car to be back on the road as soon as poss and i have next day delivery.
From what i can ascertain. The Inlet Manifold has to come off of the 3.0litre but the plugs can be changed with it in place - On the 2.5litre cars.
So i have ammassed the following tools:
3/8 Drive ratchet.
3/8 UJ.
2 small extensions and one slightly longer extension.
10mm Spark Plug socket.
I understand the fronts are fairly strait forward and i need to remove the coil pack anyway (to change it) and the rears are fiddly but not impossible?
Fingers crossed that it cures the problem.
As for the Moosing - I will buy a new hose thats 3x the lenght of the current one as i understand that can cure the problem?
Thank you for all the advice chaps - As usual PH comes to the rescue. I had put exactly the same post on the MK3 Mondeo Forum (Talk Ford) and not a single response did i receive)!
Well, UPS fudged the delivery for yesterday so i was unable to do anything last night. And whilst i has a day off work today - I was unable to do anything with the car as i had my two young children.
But i couldn't wait any longer. So tonight @ 19:00 i embarked upon the task, in the dark and the damp and (occasional) rain, none of which was as much of a hindrance as the s
tty 'LED' inspection lamp i was using!
Anyway, bearing in mind that i am not a spanner wielder normally. It took be about 1 hour and 45mins. The removal of the 3x 7mm bolts that attach the coil pack to the engine were the biggest ball ache - Luckily i had one of those 'flexi' extensions for a ratchet screw driver (otherwise i would have been screwed). Once that was removed, changing the rear plugs was fairly strait forward and the front ones are easy anyway.
Started her up and all was well :-) The EML was on, but disconnecting the battery for a few moments cured that.
Incidentally - When i removed the old HT lead from the coil pack (for cylinder No4 at the front of the engine) the connection at the coilpack was all green and ferrous but all the plugs looked OK.
But i couldn't wait any longer. So tonight @ 19:00 i embarked upon the task, in the dark and the damp and (occasional) rain, none of which was as much of a hindrance as the s
tty 'LED' inspection lamp i was using!Anyway, bearing in mind that i am not a spanner wielder normally. It took be about 1 hour and 45mins. The removal of the 3x 7mm bolts that attach the coil pack to the engine were the biggest ball ache - Luckily i had one of those 'flexi' extensions for a ratchet screw driver (otherwise i would have been screwed). Once that was removed, changing the rear plugs was fairly strait forward and the front ones are easy anyway.
Started her up and all was well :-) The EML was on, but disconnecting the battery for a few moments cured that.
Incidentally - When i removed the old HT lead from the coil pack (for cylinder No4 at the front of the engine) the connection at the coilpack was all green and ferrous but all the plugs looked OK.
Edited by richard300 on Wednesday 29th October 21:56
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