Thread: lambda sensor
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Old Dec 19, 2006 | 08:20 AM
  #64  
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gingeRS
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From: london baby!
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Originally Posted by trevCOSS
Originally Posted by gingeRS
Originally Posted by JTECHSAFF
i checked my lambda voltage today and its reading between 0v and 1.5v....... is that ok?

you guys mentioned about it reading 1v rich, not 1.5v
mine does that, varies from 1.3v to 0.05v when in closed loop, so no worries there

i was trying to set my base idle yesterday but couldnt get it to idle real smoothly. when in closed loop it would idle @ 900 rpm and hunt around (from 900-1000rpm, in sync with what the lambda sensor was doing).

when i had it idling really smoothly, i would stick the probes on the ecu, only to discover it was reading 1.31v and was out of closed loop. then i would back the CO off to get it into closed loop and the slower idle would happen.

will take a litttle more fine tuning i feel
Mine does exactly the same as this, idle varies from 900-1000 in line with the lambda signal, but the CO was 0.5% when checked, however I believe I have a map sensor fault and am currently awaiting a new one and see if that helps, can someone confirm the base idle figure just so I can re check?
which base idle figure are you after?

mine idles dead smoothly, then as it hits a certain temp, you can feel it cut to closed loop and the idle starts oscilalting with the lambda

going SCC this afternoon see if i can get it sorted

let me know, if your new map sensor has any effect, mine only 12 months old
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