faulty lambda sensor any longterm damage to engine
#3
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casper555
If you don't mind me askin, what were the symtoms of the faulty lamda sensor and how did you find the problem???
Cheers
Logan
MY95 WRX
[Edited by blacky555uk - 1/19/2004 10:28:07 PM]
If you don't mind me askin, what were the symtoms of the faulty lamda sensor and how did you find the problem???
Cheers
Logan
MY95 WRX
[Edited by blacky555uk - 1/19/2004 10:28:07 PM]
#4
didnt notice any problems car was like it since ive had it 6 months ago only found out cos of failin mot on emitions it was workin just not as good as it should be
mechanic told me the management system thought the engine was cold all the time an just pourin petrol into the engine all the time
mechanic told me the management system thought the engine was cold all the time an just pourin petrol into the engine all the time
#6
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Your lambda sensor controls closed-loop (off boost) fueling. If it has been faulty for a while, you will have been running slightly richer than normal, depending on how knackered it was. As the sensor gets more and more knackered, it generates less and less voltage, which equates to reading leaner and leaner, and so requests more fuel to be added next cycle. If you had an AFR gauge, it would probably show about 0.25v to begin with, dropping lower and lower over time, instead of the usual flying about all over the stoich area.
I don't think it will have caused any harm, as we're not talking massive amounts of fuel. If you were excessively rich in open-loop (on boost) however, you could potentially cause damage through bore wash (oil washed away from the cylinder bore by the excessive fuel)...
I don't think it will have caused any harm, as we're not talking massive amounts of fuel. If you were excessively rich in open-loop (on boost) however, you could potentially cause damage through bore wash (oil washed away from the cylinder bore by the excessive fuel)...
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