casper555

found out lambda sensor was not workin proper will it have done any long term damage to engine or any other parts ????

craigdaaavid

no mate if they **** up they usually go to a default setting. ps im going by modern day stuff if your car is a bit old it might not but i doubt it will cause any damage.

blacky555uk

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]

casper555

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

blacky555uk

Cheers!!!

Not my problem then, on to the next thing that it might be!!

The_Judge

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)...

casper555

cheers for the info lets hope it hasnt caused any damage so i can have some happy motoring

[Edited by casper555 - 1/20/2004 5:35:57 PM]