corb
Member
Registered: 24th Apr 02
Location: Calgary, Alberta, Canada
User status: Offline
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My engine management light came on AGAIN just now, and its come up as being the Oxygen sensor, NO CHANGE IN VOLTAGE/OPEN CIRCUIT.
Whats this mean then?? and where's the oxygen sensor??
Cheers, Corb.
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jr
Member
Registered: 20th May 02
Location: Kent
User status: Offline
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might be whats known as the 02 sensor, which is more commnally knows as a lambda sensor
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corb
Member
Registered: 24th Apr 02
Location: Calgary, Alberta, Canada
User status: Offline
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This is what i was maybe thinking, be in the exhaust system, but where? Manifold? or what? cos if its after the cat, i dont have a cat.
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jr
Member
Registered: 20th May 02
Location: Kent
User status: Offline
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usally there either pre cat or after cat, im "think" theres only one on a corsa which is pre cat but im not sure, best bet is to ask someone like lee where they are
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gsi-gaz
Member
Registered: 23rd Mar 03
Location: st helens
User status: Offline
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they at the front neer the manifold aint they
[Edited on 16-05-2004 by gsi-gaz]
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corb
Member
Registered: 24th Apr 02
Location: Calgary, Alberta, Canada
User status: Offline
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You not thinking of the egr valve the corsa XE lumps have are ya? at the front of the engine bay above the exhaust manifold?
Anyway,ive got nothing attatched to my manifold at all, no sensors, nothing.
 whats up wit ma car!! GRRRRR!
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Adam-D
Member
Registered: 11th May 02
Location: Cheshire
User status: Offline
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lambda sensor is screwinto the exhaust manifold
only small not egr i dont think
my bros fezzie has one in fact almost every car has one
take it out spray with carb cleaner and put back in if it still does it get a newun dont think they cost too much
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corb
Member
Registered: 24th Apr 02
Location: Calgary, Alberta, Canada
User status: Offline
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I dont have a lambda sensor/oxygen sensor 
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AdamF
Premium Member
Registered: 24th Apr 02
Location: Bexhill, East Sussex
User status: Offline
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is it supossed to have one?
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corb
Member
Registered: 24th Apr 02
Location: Calgary, Alberta, Canada
User status: Offline
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ive been looking on the manifold, apparently it could be further back, so will have another look in a bit.
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Andy
Member
Registered: 28th Dec 99
Location: Cumbria, UK
User status: Offline
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It will be positioned on the manifold, round about where all the tubing becomes one. Your lambda sensor tells the ECU the air/fuel ratio, enabling the ECU to adjust the fuelling for low emissions/economy. When it does this, the lambda sensor gives out a voltage somewhere between 0 and 1 volts. Providing the connection isn't faulty, sounds like you need a new sensor. They don't last forever BTW. They're about £30 or so - you should be able to simply unscrew the old one and screw the replacement one in.
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corb
Member
Registered: 24th Apr 02
Location: Calgary, Alberta, Canada
User status: Offline
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I canny see it man.
I reset the ecu and started the car up. revs shot up to around 3k and down again, then idling all over the place. Done another test and got 12 and 31. So maybe the crankshaft sensor IS knackered after all. Stank of fuel when it did this too.
BUT i have just washed the car and there's water getting in somewhere, and there was a bit on the loom/ecu and plug. Maybe this has caused the faults, ECU is out in sunshine now making sure its dry, then will get hairdryer on loom and plug. Hopefully I can solve this mysterious problem 
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jr
Member
Registered: 20th May 02
Location: Kent
User status: Offline
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sounds like airflow meter of crank sensor, ask fad, he has had both these problems
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J da Silva
Member
Registered: 10th Apr 03
Location: The FACTory
User status: Offline
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oxygen sensor is located in the exhaust manifold, it regulates the mixture to 1kg of fuel to 14kg of air, for cat converter effiencey.
maybe the case that its come loose and the contact is open, then your engine is having to adapt the mixture at failure point
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