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Sick Vee

B

Banjo232232

New Member
So after owning my vee just over a month and spending £1600 on a cambelt, top suspension mount and 4 new tyres, my vee is still not a happy car. Last night it developed a sort of misfire and then about ten minutes the engine management light came on. It was about this time that I thought oh great a coil has gone.

So this morning i got up made a trip to eurocarparts and purchased a replacement coil and took the vee to my local garage. Diagnostics were ran on the car and came up with misfire in cylinder 1 and fuel pressure too high.
Local mechanic said yeah looks like a coil, i'll fit this one then.

After replacing the coil i took the car a drive and the problem was still not solved, although the light never came back on.

Anyone got any ideas what else could be wrong? The vee is going back in on wednesday to have more indepth checks done. At this point I really hope something with the cam belt has not gone wrong.

Thanks James

* Edit * the first set of lambda sensors after the first cat were going nuts
 
How far did you drive the car after the engine mgmt light came on? It could be the sensor/s? Did they get flagged up on the diag scan?
 
No the sensors never came up as a fault but they were changing an awful lot between 100 up to 800. Guy said it shouldn't be fluctuating that much. Only drove it about 10miles home.
 
Was the coil fitted correctly i.e. pressed onto the spark plug fully and electrical connector fully seated ?

And the obvious question, was the correct coil actually replaced ?

Martin
 
scrabble":3qp0ebcu said:
How far did you drive the car after the engine mgmt light came on? It could be the sensor/s? Did they get flagged up on the diag scan?
Click to expand...

From past experience of driving more than a few miles with knackered coils, I'm going with this possible lambda sensors have been killed question.
 
Yeah he replaced the coil and then the same misfire continued but then he took out the other could connectors and the misfire got worse. There were no emissions warnings on the diagnostics just fluctuating readings on his diagnostics machine. I suppose it could be a broken spark plug or something.
 
I've had similar problems in the past. take off all the covers, start the car up, while the engine is running, remove which coil you think is causing the missfire, if it sounds the same, you've found the problem. Got this tip from Scott.
It seems like loose connections are a possibility. Change all your spark plugs if you haven't done it previously.
 
Thanks everyone. Ive got my fingers crossed it's something simple like spark plugs or a loose connection. The problem is coming from one cylinder and with it removed it's still the same. Funnily enough it was an already replaced coil in that cylinder a veleo one.
 
Yes check the spark plug, it may have failed or melted the electrods, possibly causing coil failures - also ensure it is torqued in the head correctly and not loose etc ...

Martin
 
Banjo232232":1w3b9xrh said:
Diagnostics were ran on the car and came up with misfire in cylinder 1 and fuel pressure too high.
Click to expand...
interesting that the fuel pressure was "too high", diagnostics will not check this as there is NO fuel pressure report to ecu. even if a manual pressure check was performed i would be suprised if there was a problem with it being "TOO HIGH" as fuel pressure is controlled by a simple sprung valve assembly, these normally fail open giving the oposite effect,
beware garage man with tall stories!
 
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