Vectra ECU Fault

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Fri 19 Aug 2005 14:40
Vectra ECU Fault - Thistle1971
Hi I have a 2.0 dti 2002 Vectra C with 66K on the clock. The car was sometimes relunctant to start if on a slight incline but would eventually start. Recently the ECU light has come on and the engine has went into emergency / limp home mode. I toook it to an independent Vaux specialist, who ran tech 2 on it, but could find no real reason for the fault. He suggested replacing the crankshaft sensor which was done but this hasn't rectifired the error as when I go above 3K revs the light comes on and the limp home mode arrives! although there is more power in the emergency mode than before? The garage suggest that it maybe fuel pump at a cost of >£1000.00! Any suggestions?
Another point,when I turn the ignition off the light goes out until it starts and goes above 3K revs!
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Fri 19 Aug 2005 15:12
Vectra ECU Fault - helicopter
Thistle - Have a read of recent Vectra threads on the technical forum particularly the ones by Alvin and myself with similar woes .

I would be very wary of replacing anything on the basis of a garage saying that it 'might' cure the problem.

The diagnosis of a possible problem with tech 2 and replacing odd bits in the hope of a cure is no substitute for a good mechanic checking out all the possibilities by process of elimination.

Anyway , if you had sluggishness in accelleration before going into limp home mode I would suggest checking whether the Catalytic converter is blocked, this was the problem on mine and Alvins Vectra.

Let us know how you get on.
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Fri 19 Aug 2005 15:22
Vectra ECU Fault - helicopter
Try reading this thread as well -Vectra DTL EGR Error Code by Richard Vectra .

I'm sure one of the Mods can provide a link.
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Fri 19 Aug 2005 15:26
Vectra ECU Fault - andy30
my old 02 vectra c struggled to start in inclines.

i have to say this was only when there wasn't much fuel in the tank, so there wasn't really a fault as it was fine when full

hated that car (apart from on motorway)
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Fri 19 Aug 2005 15:30
Vectra ECU Fault - helicopter
Thistle - The thread started by Alvin which I mentioned above appears to have been lost in the recent backroom 'meltdown' but I think it is definitely worth checking out the cat.

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Fri 19 Aug 2005 19:59
Vectra ECU Fault - Dynamic Dave
I'm sure one of the Mods can provide a link.


www.honestjohn.co.uk/forum/post/index.htm?t=33099
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Fri 19 Aug 2005 20:50
Vectra ECU Fault - Thistle1971
thanks everyone for the prompt assisitance. I wil let you know how it goes. Denis
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Mon 22 Aug 2005 10:39
Vectra ECU Fault - John S
If the ignition is turned off and back on soon after the the ECU light comes on then it can wipe the fault code from the ECU. Try to run the car for a reasonable time (half hour) with it on. This can help lock the fault code into the memory.

JS
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