2003 Ford mondeo problem please help

burgermasters · 11-06-2014 8:17pm #1

Ok so I have 2003 1.8 petrol Ford mondeo
Losing power.... when no the motor way after a few mins at 100 kph she chucks and starts to lose power? I have changed the coil pack got a new ecu put in fuel pump and filter and still the same??? When I pull in to the side of the road when this happens I put my foot to the floor out of gear it goes to 3k revs and straight back down keeping my foot down it sounds like it's suffocating and can also hear a knock from somewhere under the car? I took it to a mechanic to do the ecu and took it back again because the problem was still there he put it on a computer that told him there is nothing wrong with the car? Has anyone experience anything like this and may know what it is? My mechanic can't seem to figure it out witch is strange as he hi good at what he does
Sorry for the long post...

The Mulk · 12-06-2014 9:50am

burgermasters wrote: »

Ok so I have 2003 1.8 petrol Ford mondeo
Losing power.... when no the motor way after a few mins at 100 kph she chucks and starts to lose power? I have changed the coil pack got a new ecu put in fuel pump and filter and still the same??? When I pull in to the side of the road when this happens I put my foot to the floor out of gear it goes to 3k revs and straight back down keeping my foot down it sounds like it's suffocating and can also hear a knock from somewhere under the car? I took it to a mechanic to do the ecu and took it back again because the problem was still there he put it on a computer that told him there is nothing wrong with the car? Has anyone experience anything like this and may know what it is? My mechanic can't seem to figure it out witch is strange as he hi good at what he does
Sorry for the long post...

Maybe the EGR valve, but this usually shows up on the engine management system. You can check on youtube how to remove and clean them.
I've had two 02 petrol mondeos and this was a common problem around the 90k miles mark.

burgermasters · 12-06-2014 10:38pm

I tried cleaning the egr and still nothing??
Puzzled???

sandydan · 12-06-2014 11:28pm

just to rule out fuel starvation by lack of tank venting, remove petrol tank cap and drive, see does same thing happen,also check fuel line from tank is free with no obstruction or crack in pipe. by the way would it happen if revving high in lower gears? i presume this happens in top gear

burgermasters · 12-06-2014 11:31pm

Thanks sandyman ill try that on the way to work in the morning!
I take it that wouldn't cause any damage?

sandydan · 13-06-2014 12:05am

no it wont as long as long as it doesn't rain and put it back on ASAP, id prefer to do it on way home in case id forget it if traffic heavy (rain risk)try driving hard in lower gears first, but it will rule out blocked vent if same thing happens with cap removed, had that problem, vent box at filling cap covered with goo car would jerk and die down, also overflow drain pipe resting on top of petrol tank sucked in water during wet weather. .i presume there is not a fuel filter fitted by some one in petrol feed pipe
some how i think that's not your problem but rule it out first

greasepalm · 13-06-2014 12:12am

i remember had a fiesta or focus in same issue turned out burnt contacts at block connector on tank unit.

skippy15 · 13-06-2014 10:53pm

Have you checked spark plugs?

burgermasters · 14-06-2014 12:26am

Will be checking spark plugs in the morning even though my mechanic thinks there fine? No matter what gear I'm in once I put my foot down there is no power! It won't go past 2K revs??

iamtony · 14-06-2014 2:07am

burgermasters wrote: »

Will be checking spark plugs in the morning even though my mechanic thinks there fine? No matter what gear I'm in once I put my foot down there is no power! It won't go past 2K revs??

i don't know what's wrong with your car but change your mechanic! I hate when mechanic guesses at your expense! If I was a your mechanic and I wasn't sure what the problem was I wouldn't guess and start changing ecu's I'd tell you straight out I don't know what's wrong go to ford they probably have more experience with this problem particular problem than I do.

pablo128 · 14-06-2014 2:15am

I'll hazard a guess and say the catalytic convertor is broken up and partially blocking the exhaust gasses from getting out. It probably explains the knock from underneath.

Try to get under and give the cat a couple of good thumps of your fist and see is it rattling inside.

burgermasters · 14-06-2014 11:47am

There is a brand new cat on it put on before I bought it?? It's very strange? Just can't figure this out for the life of me? Don't want to part with it as it's a beautiful car! And was a beautiful drive before this started!

sandydan · 14-06-2014 12:41pm

have you checked venting and fuel line and theyre fine, and also fuel pump and filter connections, that rules out fuel starvation.
that knock under car could be unburnt petrol exploding ,sounds more like ignition related problem ,by any chance are HT leads on incorrectly,find out firing sequence and check, seen more than one mechanic miss this,also get insulated pliers and remove spark plugs one at time with engine running (get helper and rev)to check if plugs are sparking, (farmers style but it works)and also if spare HT leads are available swop them .or get new ones ,cant remember in what car but one time a new set of HT leads were completely useless, finally take IAMTONYs advice and change mechanic, also does water temp sensor in ford regulate fuel supply like it does in skoda

burgermasters · 15-06-2014 9:30pm

Right this problem is getting worse now it cuts out straight away after I start her? Think I'm just going to leave her into the main dealer!

Hal1 · 16-06-2014 7:56am

Do these have a mafs sensor on the air intake? you could try disconnect to multplug and start it. It's an air flow meter they can be clogged with carbon deposits and give incorrect readings. Maybe try resetting the ecu by simply disconnecting the battery for 15 or so minutes too.

Just found this too and sounds very similar to what you're experiencing.
http://www.justanswer.com/uk-ford/78pqo-ford-mondeo-lx-loses-power-acceleration.html

2003 Ford mondeo problem please help

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