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Car breaking down help - Mondeo
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Wondering if anyone’s can help.
The engine management fuse of my Mondeo keeps blowing. It can’t blow at any time, when you’re starting it up or when you’re driving, the car will suddenly die.
It’s at the dealer at the moment but they’ve said they can’t fix it.
Would any people with cat know how be able to offer any advice?
Thanks! |
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By (user no longer on site)
over a year ago
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In all seriousness though, If you put engine management fuse into google, the top searches are a Ford Focus and a Ford mondeo 
Have a search on the various forums, and see if it tally’s up with what the dealer diagnoses. |
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"Wondering if anyone’s can help.
The engine management fuse of my Mondeo keeps blowing. It can’t blow at any time, when you’re starting it up or when you’re driving, the car will suddenly die.
It’s at the dealer at the moment but they’ve said they can’t fix it.
Would any people with cat know how be able to offer any advice?
Thanks! "
Have you taken it reputable main Ford dealer? If so that is really appaluing if not get the thing to reputable dealer |
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By (user no longer on site)
over a year ago
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Mondeo's are my speciality... having owned about 20 of them!
If you want to message me exactly what happens, and if you could take a direct pic to send too... that may help 
Also are you on Facebook? There's a very good page for Mondeo mk4... I assume yours is a newish one? |
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By (user no longer on site)
over a year ago
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"Wondering if anyone’s can help.
The engine management fuse of my Mondeo keeps blowing. It can’t blow at any time, when you’re starting it up or when you’re driving, the car will suddenly die.
It’s at the dealer at the moment but they’ve said they can’t fix it.
Would any people with cat know how be able to offer any advice?
Thanks! "
What size fuse is it, just increase the fuse size by 5amp and see if that does the trick. I had a similar issue with one of my cars and that’s what I did. I didn’t blow ever again. |
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By (user no longer on site)
over a year ago
|
"Wondering if anyone’s can help.
The engine management fuse of my Mondeo keeps blowing. It can’t blow at any time, when you’re starting it up or when you’re driving, the car will suddenly die.
It’s at the dealer at the moment but they’ve said they can’t fix it.
Would any people with cat know how be able to offer any advice?
Thanks!
What size fuse is it, just increase the fuse size by 5amp and see if that does the trick. I had a similar issue with one of my cars and that’s what I did. I didn’t blow ever again."
NEVER take this advise! EVER!
A fuse is maxed out at the ampage that is used, it should never be 'upped' for a higher voltage, as this can cause fires.
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By (user no longer on site)
over a year ago
|
"Wondering if anyone’s can help.
The engine management fuse of my Mondeo keeps blowing. It can’t blow at any time, when you’re starting it up or when you’re driving, the car will suddenly die.
It’s at the dealer at the moment but they’ve said they can’t fix it.
Would any people with cat know how be able to offer any advice?
Thanks!
What size fuse is it, just increase the fuse size by 5amp and see if that does the trick. I had a similar issue with one of my cars and that’s what I did. I didn’t blow ever again.
NEVER take this advise! EVER!
A fuse is maxed out at the ampage that is used, it should never be 'upped' for a higher voltage, as this can cause fires.
"
Nonsense, another 5amp isn’t going to blow it up. It worked for me and I got the tip from a reputable Citroen forum. I swapped a 20 amp for a 25 amp and it solved the problem. |
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By (user no longer on site)
over a year ago
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You should never swap a fuse for a fuse with a higher rating, they’re rated for a reason.
It may not cause a fire, but could easily damage other components in the circuit |
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"Wondering if anyone’s can help.
The engine management fuse of my Mondeo keeps blowing. It can’t blow at any time, when you’re starting it up or when you’re driving, the car will suddenly die.
It’s at the dealer at the moment but they’ve said they can’t fix it.
Would any people with cat know how be able to offer any advice?
Thanks!
What size fuse is it, just increase the fuse size by 5amp and see if that does the trick. I had a similar issue with one of my cars and that’s what I did. I didn’t blow ever again.
NEVER take this advise! EVER!
A fuse is maxed out at the ampage that is used, it should never be 'upped' for a higher voltage, as this can cause fires.
"
Mr Marmite is your mate - don’t raise the fuse rating - it’s a protection device. Raising the rating especially on engine management or ECU is foolish. Burn that out and you’re looking at big bucks. The extra current being drawn is a fault, it’ll be found by someone that knows what they’re doing.... and that’s not always the nut fuckers at an independent or even main dealers. Try the enthusiast forums but be careful, back up the advice with other sources too, too many THINK they have a solution, look for those who know... |
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By (user no longer on site)
over a year ago
|
"Wondering if anyone’s can help.
The engine management fuse of my Mondeo keeps blowing. It can’t blow at any time, when you’re starting it up or when you’re driving, the car will suddenly die.
It’s at the dealer at the moment but they’ve said they can’t fix it.
Would any people with cat know how be able to offer any advice?
Thanks! "
Forgive me but you say engine management fuse. I'm a motor vehicle lecturer and know my cars. It will be expensive for a dealer to fix it so if I can be of any help. Need to know what engine and age. There are fuses for alot of engine components including the ECU. Is it the fuel pump fuse? |
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By (user no longer on site)
over a year ago
|
"Bulgy, I'm not here to argue with you... just stating an obvious fact. "
I wasn’t arguing, just giving my tuppence worth, it worked for me and didn’t cause any issues, that’s all I was saying. Up to him if he wants to give it a try or not isn’t it. |
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By (user no longer on site)
over a year ago
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The easy short term cheap solution is to just order a bag of 100 fuses from eBay, if it’s the same one that keeps blowing it’ll take you 2 minutes to swap when it blows. Doesn’t solve the problem but just means you’ll never be stuck at the side of the road. |
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"Wondering if anyone’s can help.
The engine management fuse of my Mondeo keeps blowing. It can’t blow at any time, when you’re starting it up or when you’re driving, the car will suddenly die.
It’s at the dealer at the moment but they’ve said they can’t fix it.
Would any people with cat know how be able to offer any advice?
Thanks! "
I know about cats but not cars lol. Tiptoes back into her boudoir  |
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By (user no longer on site)
over a year ago
|
The first step is to see what fault codes are stored in the ECU. This gives a starting point for further diagnostic checks otherwise you're just guessing.
As stated previously don't uprate the fuse. |
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By (user no longer on site)
over a year ago
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Looking at a mondeo forum it seems fuse 42 (ecu) is a common issue and there’s loads of info to sort it on those forums. Some simple fixes and some more technical. OP have a read online and see if what people describe is the same issue that you’re having and see what the solution is. |
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"Wondering if anyone’s can help.
The engine management fuse of my Mondeo keeps blowing. It can’t blow at any time, when you’re starting it up or when you’re driving, the car will suddenly die.
It’s at the dealer at the moment but they’ve said they can’t fix it.
Would any people with cat know how be able to offer any advice?
Thanks!
What size fuse is it, just increase the fuse size by 5amp and see if that does the trick. I had a similar issue with one of my cars and that’s what I did. I didn’t blow ever again.
NEVER take this advise! EVER!
A fuse is maxed out at the ampage that is used, it should never be 'upped' for a higher voltage, as this can cause fires.
Mr Marmite is your mate - don’t raise the fuse rating - it’s a protection device. Raising the rating especially on engine management or ECU is foolish. Burn that out and you’re looking at big bucks. The extra current being drawn is a fault, it’ll be found by someone that knows what they’re doing.... and that’s not always the nut fuckers at an independent or even main dealers. Try the enthusiast forums but be careful, back up the advice with other sources too, too many THINK they have a solution, look for those who know..."
There could also be something going dead short and increasing the value of the fuse by even a couple of amps could cause serious damage to other components and put you at risk. |
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By (user no longer on site)
over a year ago
|
For reasons posted above that's why you shouldn't ask for car advice on a swinging site.
Take it to a garage, a good independant garage.
Doesn't have to be Furrows. I've seen how Furrows mechanics are trained and it's no wonder they can't diagnose it.
Did they plug it into diagnostics?
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By (user no longer on site)
over a year ago
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"Looking at a mondeo forum it seems fuse 42 (ecu) is a common issue and there’s loads of info to sort it on those forums. Some simple fixes and some more technical. OP have a read online and see if what people describe is the same issue that you’re having and see what the solution is. "
42 runs ecm,fuel pump and allsorts
Common problem though theres some wires that chaff on egr pipe and end up chaffing maybe check them
Also check wiring to radio suppressor as daft as it sounds they're know for causing fuse blowing issues too. failing that i'd either say alternator overcharging or earth problems |
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By (user no longer on site)
over a year ago
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"Apparently when the dealership has been testing it the car hasn't faulted, which I think is a lie.
Going to collect it in a couple of days."
I used to work in a Citroen dealership. There should be fault codes stored for them to diagnose. So does sound like they haven't looked properly. Don't pay them. |
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By *eesideMan
over a year ago
margate sumwear by the sea |
"Wondering if anyone’s can help.
The engine management fuse of my Mondeo keeps blowing. It can’t blow at any time, when you’re starting it up or when you’re driving, the car will suddenly die.
It’s at the dealer at the moment but they’ve said they can’t fix it.
Would any people with cat know how be able to offer any advice?
Thanks! "
I'm not a marcannic but it sounds like a electrical falt. |
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"Wondering if anyone’s can help.
The engine management fuse of my Mondeo keeps blowing. It can’t blow at any time, when you’re starting it up or when you’re driving, the car will suddenly die.
It’s at the dealer at the moment but they’ve said they can’t fix it.
Would any people with cat know how be able to offer any advice?
Thanks!
I'm not a marcannic but it sounds like a electrical falt."
Best answer so far. Give that man a ceeeeegar |
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By (user no longer on site)
over a year ago
|
That was my go to solution when I was blowing fuses when I had my audio car, replaced 60 amp fuses to 80 amps 
Still never managed to blow the 300amp one tho |
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By (user no longer on site)
over a year ago
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"That was my go to solution when I was blowing fuses when I had my audio car, replaced 60 amp fuses to 80 amps
Still never managed to blow the 300amp one tho "
I bet your car didn’t burst into flames tho did it |
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example of not putting higher rated fuse in than the correct rated fuse, my brother thought it would be fine and it was for a week then up in flames it went lucky for him he wasn't driving it at the time with the kids in it, by the way the insurance didn't pay out, 3 grand up in smoke |
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"That was my go to solution when I was blowing fuses when I had my audio car, replaced 60 amp fuses to 80 amps
Still never managed to blow the 300amp one tho "
Put a long lead on the battery (obviously the black is positive and red negative) wire a 13 amp plug to the other end and get the ex wife to plug it in that should do the trick. It's ok thank me later |
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By (user no longer on site)
over a year ago
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"example of not putting higher rated fuse in than the correct rated fuse, my brother thought it would be fine and it was for a week then up in flames it went lucky for him he wasn't driving it at the time with the kids in it, by the way the insurance didn't pay out, 3 grand up in smoke"
He obviously put it in back to front the wally  |
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By (user no longer on site)
over a year ago
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"That was my go to solution when I was blowing fuses when I had my audio car, replaced 60 amp fuses to 80 amps
Still never managed to blow the 300amp one tho
I bet your car didn’t burst into flames tho did it "
Two runs of 70mm cable
4 batteries
7200 Watts rms into the sub
500 Watts rms into each door
Nope never had a fire 
I’ve blown amps,speakers and fuses but never caused any actual dangerous scenarios |
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By *hechapMan
over a year ago
Derry |
Don't go near a dealer. Go to an independent garage or auto electrican that knows what they are doing.
A lot of opinions on here giving advice and they clearly haven't a clue what they are talking about.
But then again its a sex site. A bit like all the experts you meet in a pub that know everything there is to know about everything....
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By *eavenNhellCouple
over a year ago
carrbrook stalybridge |
"The easy short term cheap solution is to just order a bag of 100 fuses from eBay, if it’s the same one that keeps blowing it’ll take you 2 minutes to swap when it blows. Doesn’t solve the problem but just means you’ll never be stuck at the side of the road. "
dont even need to do that you can buy a circuit breaker type fuse to replace it same rating etc when ever it pops just switch off reset start again.. have this on my truck for thecpassenger window as it sticks during a dry spell .most motorsport parts shops can supply them they just push fit as a replacement for the fuse
|
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"Wondering if anyone’s can help.
The engine management fuse of my Mondeo keeps blowing. It can’t blow at any time, when you’re starting it up or when you’re driving, the car will suddenly die.
It’s at the dealer at the moment but they’ve said they can’t fix it.
Would any people with cat know how be able to offer any advice?
Thanks! "
had a few Mondeosand focus. Read the ecu with a cheap odb2, and software £20 it may help. |
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By (user no longer on site)
over a year ago
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I used a specialist auto-electrician when I had an ECU related problem. Very helpful and suggested ways to solve the issue without replacing the ecu. The specialist garage just jumped straight to the £450 repair as a solution. |
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Picking the car up from the dealers tomorrow so I'll see what excuses they come up with for not fixing it/the car not failing on them when testing it.
I'm looking into a couple of local auto electricians to see what they can do.
Also ordered a self resetting fuse.
Not looking forward to driving it home. |
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Update:
Got the car back and drove it home with no problems, well the battery was dead when I picked it up and the garage jump started it.
Report said that the fuse was blowing when they were testing it but they did some disconnecting/reconnecting and wiggle tests and after that the fuse apparently stopped blowing. They said they did road tests too with no fault.
I just have to recharge the battery now... |
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"Update:
Got the car back and drove it home with no problems, well the battery was dead when I picked it up and the garage jump started it.
Report said that the fuse was blowing when they were testing it but they did some disconnecting/reconnecting and wiggle tests and after that the fuse apparently stopped blowing. They said they did road tests too with no fault.
I just have to recharge the battery now..."
If the battery was flat then either the battery is Fubarred or there is something draining it, very very likley to be the same somthing that is blowing the fuse.
If this is the best a main Ford dealer can do then if only reforces my opinion of Ford them.
Sorry to sound harsh towards all the Ford fans but that level of expertease from a main dealer is completley unacceptable. IMHO Of course. |
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From what I can gather the car was left in the yard for a while and during the snow and cold weather.
The receptionist said they hadn't tested it 'in a while' which led me to believe that they were just sitting on it for ages. |
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