Hello
for the past few days the orange engine warning light has been coming on intermitantly,(it pulses) after a few miles it goes out, sometimes coming on again.There seems to be no loss of power and no warnings showing on the computer screen.
The car is a 1999 with 106K on the clock with full history
Any ideas?
Cheers.
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What size engine?
From what you\'re saying, it *could* be the camshaft or crankshaft sensor at fault. They\'ve been known to misbehave.
you might be able to do the \"paper clip\" trick to flash up the error code.
Details here:-
www.topbuzz1.carenthusiasts.co.uk/info/fault_codes...m
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Its a 3.0L,the paper clip test doesn't work on the TECH2 ECU fitted from '98 onwards,but if you know differently!!
Is this camshaft sensor a big job or could i do it at home?
I suppose I will have to stump up the cash and get it read at a VX dealer to be sure.
Thanks for the prompt answer.
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the paper clip test doesn't work on the TECH2 ECU fitted from '98 onwards,but if you know differently!!
You're quite right. The site I posted earlier doesn't cover later Omegas.
Is this camshaft sensor a big job or could i do it at home?
From write ups I've read of other Ecotec engines, it *could* just be a poor connection, rather than the sensor itself. As to where the sensors are located, hopefully an expert will be along shortly.
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On these Omegas the camshaft sensor is located at the front RHS of the engine (standing at the front of the car) - slightly to the right of, and below, the throttle position sensor.
It has a three-terminal connector. With ign. on there should be battery voltage measure between terminals 1 & 3. Crank the engine and you should see a regular 0-5V pulsing between terminals 2 & 3. Its not a massive job to change it - but it all depends on how experienced you are.
In general these Vaux's are all a bit of a pain - the sensors are so unreliable, and then expensive when you need a replacement.
If the sensor checks out OK then get the codes read. If there is a terminal connector pin in position no. 6 of the DLC connector (16 pin 'OBD' connector) then you can do the link trick with a paperclip - otherwise its a dedicated reader that's needed.
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PS - you can also check the cam sensor at the ECU. Probe pin 8 and with the engine at idle you should see a 4-5V signal (approx. square wave) with frequency of 5-10Hz. Obviously you need a 'scope on this one.
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Thanks Gents,
Il'l look into that,hopfully the connector just needs a clean but knowing my luck...
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Best to have the codes read by someone, even the dealer may do it cheap if you wink and smile at the receptionist :o)
They charged me £34 once, and it only took him 5 mins sat in the drivers seat with his TECH2, as I was sat on a wall nearby spying on them.
Once you have the fault description and numbers, you should be able to repair it yourself, or search the net for the cause.
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