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Author XE turning over but doesn't spark
VegasPhil
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Registered: 16th Jan 05
Location: Fareham, Hants Drives: Octavia VRS
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15th Oct 07 at 22:27   View Garage View User's Profile U2U Member Reply With Quote
This is in a nova, we have an XE engine which we have fitted. The engine turns over nicely, but as of yet there is no sign of a spark.

Is this going to be something difficult to solve? Where do we start?

On a Nova do you need an earth from the gearbox to the chassis still?

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Richardhhha
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Registered: 29th Sep 07
Location: Croydon, Greater London
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15th Oct 07 at 22:28   View User's Profile U2U Member Reply With Quote
which XE engine is it?
VegasPhil
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15th Oct 07 at 22:33   View Garage View User's Profile U2U Member Reply With Quote
Late type Dispac

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Richardhhha
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15th Oct 07 at 22:36   View User's Profile U2U Member Reply With Quote
so its ot a coil pack then...

have you tryed checking the crank position sensor as the coil pack picks up off this and will not send out any HT if this aint working?
VegasPhil
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15th Oct 07 at 22:47   View Garage View User's Profile U2U Member Reply With Quote
Do you have to take the sump off to check this?

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Richardhhha
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15th Oct 07 at 22:54   View User's Profile U2U Member Reply With Quote
dont think so, i think its sitting on the crank pulley. mine is and thats a x14xe
VegasPhil
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15th Oct 07 at 23:08   View Garage View User's Profile U2U Member Reply With Quote
Nice one mate, I'll have to look that up, Could you tell me where it is?

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Richardhhha
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15th Oct 07 at 23:10   View User's Profile U2U Member Reply With Quote
the CKP sensor, easy turn the stearing wheel full lock left, lay on your back and its on the bottom pulley held in by a 8mm bolt.

sepending on the engine they can be up to £40
Vaux Lad
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16th Oct 07 at 12:40   View User's Profile U2U Member Reply With Quote
Its not on the bottom pully on a xe.
It points inside the front of the block, and picks up the crankshaft rotation.

Does the car have a earth strap from the starter motor bolt to the battery negative terminal? If so it dont need the gearbox strap.
Check the fuel rail earths.

And does the ecu light come on with ignition?
JayCarr
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Registered: 19th Dec 02
Location: Cambs Drives:M3 & X3
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16th Oct 07 at 13:34   View User's Profile U2U Member Reply With Quote
Mine was doing this last month. I had no spark, checked leads, coil etc. Bought a new ECU and it started first time, and has ever since.

Could be the same problem?
2ltrjim
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Registered: 20th Dec 06
Location: Oswaldtwistle, Lancashire
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16th Oct 07 at 16:21   View User's Profile U2U Member Reply With Quote
not read the full post but there is a blue wire from the loom that needs a switched live have you done that
SportBoy
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Location: Retford, Nottinghamshire
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16th Oct 07 at 17:22   View User's Profile U2U Member Reply With Quote
ecu plugged in .. sounds stupid but ive done it before
Ste L
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Registered: 3rd Jul 06
Location: Manchester Drives: 106 16v Rallye
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16th Oct 07 at 17:24   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by 2ltrjim
not read the full post but there is a blue wire from the loom that needs a switched live have you done that


this is a late dispac engine.. so the blue is the temp sensor on it...
black is switched live on this loom
Ian W
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Registered: 8th Nov 03
Location: Wirral, Merseyside
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16th Oct 07 at 19:06   View User's Profile U2U Member Reply With Quote
You got the hall sensor for the engine? A lot of people miss it when getting the engine / loom, wont run without it.

Flashed the fault codes?


[Edited on 16-10-2007 by Ian_Gsi16v]
AdamF
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Registered: 24th Apr 02
Location: Bexhill, East Sussex
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16th Oct 07 at 22:04   View Garage View User's Profile U2U Member Reply With Quote
if the engine is turning over then you wont need a strap from the box

take the plug off the coil, and get a lead light. switch the ignition on and check the wires inside the plug.

one should be earth, one live and the other pne should flash when cranking.

if it flashes check the coil if it doesnt then check crank sensor, ecu etc
VegasPhil
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17th Oct 07 at 12:33   View Garage View User's Profile U2U Member Reply With Quote
Cheers guys, will start with trying the new ECU

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sherwood
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17th Oct 07 at 14:50   View User's Profile U2U Member Reply With Quote
the engine management light does not come on wen the ignition is on. and is the crank sensor on the front left, on the top of the bottom end, sounds confusing i no but i think it makes sense. cheers for the post by the way phil :thumbs:

[Edited on 18-10-2007 by sherwood]
Vaux Lad
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17th Oct 07 at 14:53   View User's Profile U2U Member Reply With Quote
If the management light doesn't come on, but its wired up.
Then the ecu isn't getting power.
sherwood
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17th Oct 07 at 14:58   View User's Profile U2U Member Reply With Quote
any idea wat i should do? or check?
SportBoy
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17th Oct 07 at 16:41   View User's Profile U2U Member Reply With Quote
power relay?
Vaux Lad
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17th Oct 07 at 17:40   View User's Profile U2U Member Reply With Quote
Check the permanent live, and the ignition live wires.
sherwood
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20th Oct 07 at 17:57   View User's Profile U2U Member Reply With Quote
ive gt the engine man light on the dash now, i found a loose earth.. still not getting a spark, ive changed the coil pack an had the ecu running on phils xe
sherwood
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21st Oct 07 at 16:39   View User's Profile U2U Member Reply With Quote
Update for today.

ECU seems to power up a\s the light is on the dash.

Where is the crank sensor? Is it the sensor in front of the dispac with the 2 13mm bolts holding the cover on? I have tried changing the cover over with abnother one and plugging it in but still no joy.

The car is turning over but we are getting no fuel and no spark, Any ideas would be appreciated now! Getting a bit stuck.

Any detail about changing the crank sensor would be nice, just to check if we have done it right - Haynes is a bit useless for it!!
Vaux Lad
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Registered: 15th Dec 04
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21st Oct 07 at 18:20   View User's Profile U2U Member Reply With Quote
Its on the front of the block, bolted to it.
Under-ish the thermostat housing.
VegasPhil
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Location: Fareham, Hants Drives: Octavia VRS
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21st Oct 07 at 22:25   View Garage View User's Profile U2U Member Reply With Quote
Oh right. That's been changed now.

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