misfire problem in mondeo

From Aust, 1 post

I currently have a 97 Ford Mondeo which misfires whening taking off from still, aswell as when gears are changed and a little extra stress is put on the engine. The problem only seems to exist after the car has warmed up. I have already changed the coil pack, leads and plugs, but the problem persists. Im now thinking it is a fuel problem, but then why would it only happen once the engine is warm? any ideas?

From Indiana, 1 post

Don't feel bad I have the same problem in a 97 E 350 with a V 10, I have a major misfire problem on cylinder number 4 and very low missfire on number 8, I have scanned and changed the coil packs and plugs with no repair. I will attempt a new fuel filter change first with a cam sensor and then an injector. I will let you know if I have any luck. I have stumped Ford since no controls seem to be screwing up except the misfire.

1 post

Originally posted by rosman on 2 Apr 2004 7:01 AM
I currently have a 97 Ford Mondeo which misfires whening taking off from still, aswell as when gears are changed and a little extra stress is put on the engine. The problem only seems to exist after the car has warmed up. I have already changed the coil pack, leads and plugs, but the problem persists. I'm now thinking it is a fuel problem, but then why would it only happen once the engine is warm? any ideas?

I don't suppose you ever found out what the problem was did you? My Mondeo has started to show similar problems......!! Any advice you can give would be well appreciated!

Thanks

Alex

From Uk, 1 post

I bought an N reg. Mondeo si 4x4 2.0 and tore my hair out trying to fix an almost intermittent misfire, after changing plugs,leads,battery,re-programming ECU,checking hoses & pipes (4 or 5 times as i was sure vaccuum pipes were to blame).
They were! try these two things-as they were both contributing to my headache.
1.-a well hidden vac. pipe hiding under and behind the distributor(it's like a big 'T'piece)
the pipe connects to the side of the inlet manifold,mine was connected, but only loosely-i simply put a jubilee clip on it with gritted teeth and a long screwdriver!!
2.(this one has a strange accompanying darth vader-ish noise, heard when accelerating lightly)-the two vac. pipes connected to the pulse air solenoid valve (the small one on the left on the bulkhead mounting plate)i found that these were connected "upside down", swap the two around.smiles all-round!!!

From Kent, 2 posts

Originally posted by rosman on 2 Apr 2004 7:01 AM
I currently have a 97 Ford Mondeo which misfires whening taking off from still, aswell as when gears are changed and a little extra stress is put on the engine. The problem only seems to exist after the car has warmed up. I have already changed the coil pack, leads and plugs, but the problem persists. Im now thinking it is a fuel problem, but then why would it only happen once the engine is warm? any ideas?try replacing the inlet manifold gasket and check 4 air leaks!

From UK, 1 post

Originally posted by cabrioletjay on 22 Apr 2005 8:53 PM
Originally posted by rosman on 2 Apr 2004 7:01 AM
I currently have a 97 Ford Mondeo which misfires when taking off from still, as well as when gears are changed and a little extra stress is put on the engine. The problem only seems to exist after the car has warmed up. I have already changed the coil pack, leads and plugs, but the problem persists. I'm now thinking it is a fuel problem, but then why would it only happen once the engine is warm? any ideas?try replacing the inlet manifold gasket and check 4 air leaks!



I seem to have a similar problem on a 98 reg 2.0LX. I have a misfire under light load below 3000 although mine is worse when cold. Adding more throttle stops the misfire, and it does not misfire above 3000. Any suggestions welcome !

From Africa, 2 posts

Originally posted by Northernfb on 20 Oct 2006 2:46 PM
Originally posted by cabrioletjay on 22 Apr 2005 8:53 PM
Originally posted by rosman on 2 Apr 2004 7:01 AM
I currently have a 97 Ford Mondeo which misfires when taking off from still, as well as when gears are changed and a little extra stress is put on the engine. The problem only seems to exist after the car has warmed up. I have already changed the coil pack, leads and plugs, but the problem persists. I'm now thinking it is a fuel problem, but then why would it only happen once the engine is warm? any ideas?try replacing the inlet manifold gasket and check 4 air leaks!





I seem to have a similar problem on a 98 reg 2.0LX. I have a misfire under light load below 3000 although mine is worse when cold. Adding more throttle stops the misfire, and it does not misfire above 3000. Any suggestions welcome !

I have a mondeo V6, 2.4 98 modelautomatic that misfires when on load (above 120 klm). my mechanic discover that once the misfiring starts the rpm will drop and the car can not go beyond 80klm p.a. Also, 3 noozles would cease current. could it be the ECU? I am suffering seriously as the car is consuming fuel.

I will appreciate your suggestion including where to get the right ECU if it is the problem. Dikson

From Africa, 2 posts

Originally posted by Northernfb on 20 Oct 2006 2:46 PM
Originally posted by cabrioletjay on 22 Apr 2005 8:53 PM
Originally posted by rosman on 2 Apr 2004 7:01 AM
I currently have a 97 Ford Mondeo which misfires when taking off from still, as well as when gears are changed and a little extra stress is put on the engine. The problem only seems to exist after the car has warmed up. I have already changed the coil pack, leads and plugs, but the problem persists. I'm now thinking it is a fuel problem, but then why would it only happen once the engine is warm? any ideas?try replacing the inlet manifold gasket and check 4 air leaks!





I seem to have a similar problem on a 98 reg 2.0LX. I have a misfire under light load below 3000 although mine is worse when cold. Adding more throttle stops the misfire, and it does not misfire above 3000. Any suggestions welcome !

From Wolverhampton, 73 posts

I think it is definitely a fuel problem if all these cars have the same one.

From Cumbria, 1 post

Originally posted by dikson on 4 Nov 2006 7:24 PM
Originally posted by Northernfb on 20 Oct 2006 2:46 PM
Originally posted by cabrioletjay on 22 Apr 2005 8:53 PM
Originally posted by rosman on 2 Apr 2004 7:01 AM
I currently have a 97 Ford Mondeo which misfires when taking off from still, as well as when gears are changed and a little extra stress is put on the engine. The problem only seems to exist after the car has warmed up. I have already changed the coil pack, leads and plugs, but the problem persists. I'm now thinking it is a fuel problem, but then why would it only happen once the engine is warm? any ideas?try replacing the inlet manifold gasket and check 4 air leaks!







I seem to have a similar problem on a 98 reg 2.0LX. I have a misfire under light load below 3000 although mine is worse when cold. Adding more throttle stops the misfire, and it does not misfire above 3000. Any suggestions welcome !

Quote: i have the same problem on a 99 t reg 2.0 lx estate the misfire between 1500 and 3000 rpm . i removed the maf clip and it solved it . but so did removing the vacuum pipe from the top of the diaphragm by the coil . any info would be great as it is driving me mad now . great site btw guys