Lambda Knackered?
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Lambda Knackered?
Hi All,
Already posted this in General technical but didn’t get much response. My car is proving a nightmare to tick over when cold. It starts fine every time, but immediately goes into lumpy idle with revs all over the place, and then stalls. If I keep my foot on the throttle slightly until it warms up, the tick-over settles down, but I still get a slight miss if I blip the throttle even then. I’m pretty sure the lambda is on its way out anyway, but could this be the cause of the problem? I’ve got an Apexi with commander and the readout of the sensors indicates the o2 is running at 2.68v which, from what I can tell via some of the threads across the board is probably too high. Would a broken lambda sensor cause this type of problem? Car is a JDM STI6 by the way.Thanks for any help you could provide.
Simon
Already posted this in General technical but didn’t get much response. My car is proving a nightmare to tick over when cold. It starts fine every time, but immediately goes into lumpy idle with revs all over the place, and then stalls. If I keep my foot on the throttle slightly until it warms up, the tick-over settles down, but I still get a slight miss if I blip the throttle even then. I’m pretty sure the lambda is on its way out anyway, but could this be the cause of the problem? I’ve got an Apexi with commander and the readout of the sensors indicates the o2 is running at 2.68v which, from what I can tell via some of the threads across the board is probably too high. Would a broken lambda sensor cause this type of problem? Car is a JDM STI6 by the way.Thanks for any help you could provide.
Simon
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Anyone help here guys? This is really starting to bug me now! I've changed the o2 sensor and the MAF sensor. Also cleaned the idle control valve. It's definately not the temperature sensor as the fans don't come on when i start the car. Got no fookin idea to be honest. Arrrgghhhhhh! Puleeeease, someone help.
Simon
Simon
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Originally Posted by ReggieMY99
clean TPS ? clean inside throttle house around the butterfly
leak somehwere ?
just a few suggestions
leak somehwere ?
just a few suggestions
Simon
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Originally Posted by Granicus
I’ve got an Apexi with commander and the readout of the sensors indicates the o2 is running at 2.68v which, from what I can tell via some of the threads across the board is probably too high.
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Originally Posted by Graz
AFAIK Lambda voltage is supposed to be somewhere between 0 and 1v. 2.68v sounds wrong, unless the Apexi scales it in some way. See if you can borrow an AFR meter from somewhere or get a decent voltmeter and look at the actual reading the Lambda sensor is giving. Could be you have a dodgy earth on the sensor?
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