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#518981 - 24/06/18 11:13 AM ecu trouble
paul Offline
Just Getting Started

Registered: 15/09/06
Posts: 73
Loc: the Netherlands
A unsolvable problem.
I own a 2013 4/4 sport , 1,6 ltr. 25000 miles on it. The engine management light keeps coming up after about 60 miles. Replacing the coil, cords and the spark plugs doesn’t seem to help.
The ecu keeps giving error code P0300, (misfire in one of the cylinders).
After resetting the code, light goes out. After about 60-70 miles it on again.
The engine keeps running flawless after the light is on.
On a ten days trip through Europe I had to reset the Ecu every day to get the annoying light out and at three occasions the eco went into “protect mode” and the engine gave no power. After restarting the engine al is well.

any clues???

thx’s in advance.

Paul.

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#518991 - 24/06/18 12:00 PM Re: ecu trouble [Re: paul]
Hamwich Online   content

Talk Morgan Sage

Registered: 28/04/08
Posts: 6501
Loc: Gloucestershire, UK
Air leak, blocked fuel filter, or battery. If your battery is original, that's where I'd check first, especially as the car has only done 25k miles.

Does it make any difference if you use 98 octane fuel?
_________________________
Tim H.
1986 4/4 VVTi Sport, 2002 LR Defender, 1957 R4 CV, 2005 Ferrari Vipar

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#519019 - 24/06/18 05:09 PM Re: ecu trouble [Re: paul]
sospan Offline
Charter Member

Registered: 31/05/10
Posts: 5477
Loc: Llanelli
Yes...try the higher octane petrol. My car runs well on it. I used to get an occasional MIL light due to “random intermittent misfire” being detected. I cleared it with the Maxiscan. The only time it has returned is after using 95 octane and under harder acceleration. I sense the engine runs better and possibly a fraction better mpg.
_________________________
Red Plus8

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#519026 - 24/06/18 06:36 PM Re: ecu trouble [Re: paul]
paul Offline
Just Getting Started

Registered: 15/09/06
Posts: 73
Loc: the Netherlands
Thx's for your advice, Although I did try 98 octane and put some engine cleaner in the tank. Doesn't seem to work. And I forgot to mention I changed the air filter for a K&N filter. Didn't seem to help either.
I wil try the battery and look for air leaks.
Fingers crossed.

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#519036 - 24/06/18 07:37 PM Re: ecu trouble [Re: paul]
twotribes Offline
Talk Morgan Enthusiast

Registered: 15/07/11
Posts: 1663
Loc: Kent & Dorset, UK
When did you change to a K&N filter - was it before this issue arose? (oiled paper/foam filters can put a film on the air mass sensor and give running issues)
_________________________
Stuart
"There's no skill substitute like cubic inches."

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#519059 - 24/06/18 09:09 PM Re: ecu trouble [Re: paul]
paul Offline
Just Getting Started

Registered: 15/09/06
Posts: 73
Loc: the Netherlands
changed the filter after the problems arose. Seems a good replacement. No specific reason to be honest.

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#519062 - 24/06/18 09:18 PM Re: ecu trouble [Re: paul]
paul Offline
Just Getting Started

Registered: 15/09/06
Posts: 73
Loc: the Netherlands
I was thinking, could the ecu itself be the problem?

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#519080 - 24/06/18 11:50 PM Re: ecu trouble [Re: paul]
Taffmog Offline
Has a lot to Say!

Registered: 22/09/10
Posts: 1450
Loc: Wales
Could be but unlikely. If your dealer can’t help try ringing Mark Baldwin at the Factory.

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#519109 - 25/06/18 10:28 AM Re: ecu trouble [Re: paul]
Heinz Online   content

Talk Morgan Addict

Registered: 07/09/09
Posts: 3029
Loc: Cologne, Germany
If you googled Ford 1.6 VCT P 0300 you see among others horrible Odyssians up to the replacement of VCT units, exhaust valve seals etc.

What I mean by this is that it requires a truly experienced specialist who knows these engines. Otherwise you might be lost and someone will repair the engine without a plan.

But sometimes the little things that you can do yourself at no cost can help with such a mistake.
E.g. I would carefully remove the contact plugs from the relevant visible parts, e.g. the camshaft sensors and the VCT hydraulics, I would also keep an eye on the coolant sensor via OBD2. The two oxygen sensors should also show good values when monitoring
Anything that could draw in wrong air I would check mechanically.

These engines are very sensitive to oil. If thicker than 5w30 the VCT may not work anymore properly.

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#519310 - 26/06/18 08:07 PM Re: ecu trouble [Re: paul]
smudger1 Offline
L - Learner Plates On

Registered: 20/05/09
Posts: 137
Loc: Durham, UK
I'm Not familiar with this engine but in general terms
1) Does it have a knock sensor - faulty transducer/ connection
2) 60 miles is well past the the engine getting warmed up , so it may be something effected by heat/vibration/air flow under the bonnets
3) Check the earth connections
_________________________
1999 Morgan Plus 8. 3.9 ....
1961 Alvis TD21 Series1 3 Litre Auto....

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#519336 - 26/06/18 10:49 PM Re: ecu trouble [Re: paul]
andymot Offline

Talk Morgan Regular

Registered: 11/09/14
Posts: 672
Loc: East Sussex, ENGLAND
Been thinking about this for a while. many of whats been said is good advice. A couple of things spring to mind.

Partially blocked tank breather? This may cause restricted fuel flow after the 60 or so miles as a vacumn built up? Any air noise when filler cap removed? If fuel flow restricted same as excess air - either situation would show up via the "fuel trims" readings. this could be determined from live data feed via the EOBD socket into a scanner. I think unlikely as a lean code would come up i think.

Its stated the engine runs fine even thought the light is on. My best guess in this situation is you may have a lambda probe / 02 sensor ( in the exhaust) thats dodgy. Again this canbe checked via a scanner that monitors the sensor voltages - it should vary as the engine is revved - a steady voltage from an 02 sensor indicates its dead. This would ping the EML light on and the engine will still run ok as the ecu compensates.

Agree about battery voltage - modern cars are very fussy with to regard volts - even if the cars starts ok it might still have a dodgy cell causing havoc. best bet is try another battery if its more than 3-4 years old.

I know a new coil has been tried but I'd still not rule out a connection to or the coil itself. maybe breaking down as it gets hot? Was it a good, known make or ideally genuine Ford? Are the connections to it clean ( inside the connector plug) and tight?

I would pop a set of iridium plugs in to be sure as well. ( wolf performance sell these for the Sigma engine).

Before you go replacing more bits i think best bet is to get a decent scanner ( not a basic code reader) onto the car and have an in depth look at all the live data readings - this should help point you in the right direction.

One thing is for sure - its fixable!
_________________________
2015 Morgan 4/4 (Wolf tuned engine, steering and suspension)
Mazda MX5+some preserved BL relics.


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#521981 - 12/07/18 06:04 PM Re: ecu trouble [Re: paul]
paul Offline
Just Getting Started

Registered: 15/09/06
Posts: 73
Loc: the Netherlands
Hi all, ecu- trouble seems solved. It all had to do with earth connections, surface rust on contacts and some faulty electrical connections.
thx's for al the advice. It certainly showed me the way :-)

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