lambda sensor blues

[expansionvalve]

my car stalled recently on a rainy day whilst driving. tried a few starts but had no luck in getting the car going. i ended up towing the car back home. after analysing the problem at home i found out that the check engine light flashed 6 times. and eventually found that this is the lambda sensor. i just replaced the sensor about a month ago. my question to anybody is,if your lambda sensor is faulty will it cause the car to stall during driving, coz i thought that it just fine tunes your fuelling with regards to emission control. i would have thought,the worst that can happen is a misfire. a day later the car starts perfectly but with the check engine light on though any thoughts anyone

[paul anderson]

expansionvalve,

My experiences of failed Lambda sensors has been that the engine runs ridiculously rich. Like having the choke on a carb car fully out. In the cooler climes of Scotland you get away with a misfire or two and about 12 MPG. My guess that in the heat of Brunei it will effectively be flooded. After a day then you can probably restart but one warmed up again it'll probably stall again.

Paul @ Kippen

[Ma11y]

Paul is right.

The extra fueling serves as a coolant & more importantly, protection against detonation which could harm the engine seriously. As it's unable to sense the oxygen content, it over-fuels to make sure the fuel in the fuel/air mixture is not lean.

HTH
Mally.

[expansionvalve]

thanks for the info guys. i guess youre right i have a new lambda sensor on its way, and i've also included an exhaust manifold gasket set just in case. hopefully things will run the way it was on my 9000.