Ford Mondeo mk4 Petrol Shaking and Low on Power

Ford Mondeo mk4 Petrol Shaking and Low on Power

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Joddon

Original Poster:

4 posts

30 months

Sunday 28th June
quotequote all
Hi all,

I hope I've put this in the right section!

I would love some help and suggestions please. I have a 2007 Ford Mondeo 2.0l petrol (Duratec HE). Over the last week the car has been shaking violently at start up and slightly rev hunting. I have replaced all spark plugs and it is perhaps slightly better but not by much at all.

The car shakes when setting off in first then settles down through the gears but feels low on power, bogging. It doesn't seem to rev freely under load, but revs normally when in neutral. I have also noticed that occasionally I hear a "pop" when changing gears.

When the engine is warm, when coming to a standstill, it feels like the engine is going to cut out but has never quite managed it. It rev hunts agressively for about 30 seconds then remains fairly steady.

There are no lights on the dash, no codes stored. I have changed the spark plugs, put more fuel in the car and taken it for a short Italian tune up. I have exhausted my very, very limited mechanical skills and just wondering if anyone has any suggestions?

Tl;Tr

. Car shakes on start up
. Car shakes when pulling away in first
. Car is down on power, almost a bogging feeling
. Not revving properly under load
. Revving fine in neutral
. No lights or codes
. When engine is warm, rev hunting is worse for the first 30 seconds after becoming stationary
. I have changed plugs, added fuel and driven it hard

Thank you all for reading,
James

stevieturbo

14,879 posts

203 months

Sunday 28th June
quotequote all
Instead of all that crap....check which cylinder is not firing as it sounds like it's off a cylinder.

Joddon

Original Poster:

4 posts

30 months

Sunday 28th June
quotequote all
Cheers Stevie, that'll be my next thing to check

stevieturbo

14,879 posts

203 months

Monday 29th June
quotequote all
It should have been the first.

NMNeil

404 posts

6 months

Tuesday 30th June
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After that suspect a plugged fuel filter or the fuel pressure sensor, a known problem on the Duratec engines.

Joddon

Original Poster:

4 posts

30 months

Saturday 4th July
quotequote all
Just to update this - two faulty ignition coils! Thanks for the help and suggestions guys.