Mistamist
Member
Registered: 16th Jul 03
Location: Gillingham, Kent
User status: Offline
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Are these needed on a pre cat car? and if one is faulty how can it be checked?
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Adam_B
Member
Registered: 13th Dec 00
Location: Lancashire
User status: Offline
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You dont normally have one without a cat i dont think. should thow up a fault code if were talking Vauxhall
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Mistamist
Member
Registered: 16th Jul 03
Location: Gillingham, Kent
User status: Offline
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yeah we are talking vaux, have a 89 engine i believe (20XEJ) but a cav GSI loom ecu and manifold, was running fine but now if i rev it hard ie hard acceleration etc the ecu light comes on, did a flash test at pvs and was came up with
13 Oxygen sensor No change in voltage/open circuit
44 Oxygen sensor Air/fuel mixture too lean (weak)
was reading on topbuzz that OS's are for cars with fuel injection and a CAT.
baffled
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myke
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Registered: 7th Feb 01
Location: High Wycombe, Buckinghamshire
User status: Offline
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mist, i got a feeling you can bridge two pins in the ecu or earth one pin to make it think there is no lambda.
mig will probably be more usefull though
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Mistamist
Member
Registered: 16th Jul 03
Location: Gillingham, Kent
User status: Offline
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aaah sweet dude, was getting a bit worried that if i push the car it will start to run lean. but at the moment it is almost undrivable, keeps wanting to stall when pulling away.
will post up on mig and see what they say.
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broster
Premium Member
Registered: 6th Dec 02
Location: Drives: E39
User status: Offline
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if the ecu needs a lambda then it wont run properly without one, get a bolt welded to the manifold and fit a lambda to it.
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Joff
Member
Registered: 17th Oct 00
Location: Cambridgeshire
User status: Offline
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quote:
Originally posted by broster
if the ecu needs a lambda then it wont run properly without one, get a bolt welded to the manifold and fit a lambda to it.
But what if the lambda is expecting to be down-wind of a cat? Won't it register another fault?
Only asking because that's how mine is...
I say get rid of the whole induction system and ECU anyway.
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ed
Member
Registered: 10th Sep 03
User status: Offline
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Think you can tap into the loom somehow and fit a resistor in where the lambda sensor should be, then your car will think that it has a working lambda sensor 
My 20XE doesn't have a lambda sensor, and there is no where on the loom to plug one it...
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large-sri
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Registered: 19th Feb 05
Location: Norv Davon (North Devon)
User status: Offline
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ive just got a lambda sensor to cure my flat spot when i pull away................actuallay! will this cure my problem?? any advise ??
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Jambo
Member
Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
User status: Offline
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i fried mine racing a golf gti.
I now have a new one and my car runs so much better.
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corb
Member
Registered: 24th Apr 02
Location: Calgary, Alberta, Canada
User status: Offline
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what jamobo said, mine runs much better having replaced it with a new one.
If theres meant to be a lambda on the ecu I'd definately put one in there imho.
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