lamdba sensor

[danmusic24]

car running like a old dog! fault code 00537 lamdba sensor? is it a easy job to replace? and where would the best place buy one? engine code agg

[javalin]

easy enough - can recommend a set of "crowsfeet" socket ends, and GSF for the part.

[danmusic24]

if i had a air leak on intake could vagcom be giving me a false code?

[javalin]

yup - check for airleaks first.  Worth checking changing plugs & wires possibly too - bad ignition will also throw it off.  Air filter might be worth changing too...

[danmusic24]

the strange thing is that a few weeks before it starting running like a dog,i could here a loud air sucking noise but cant find anything leaking...so i hope its lamdba as it just cost me 39 quid.....

[javalin]

induction noise?  Check that the airbox lid is correctly seated.  won't cause lamda issues though.

James

[danmusic24]

ok help needed! changed my lamdba sensor and car is still running rough..hunting on idle and slight missfire with popping in exhaust..
just plugged it back in and still got 00537 error code aas well as 00520 00523 and 00515 what the hell is going on.....HELP!!

[rubjonny]

disconnect the plug to the lambda sensor, does it run ok? if not, the problem is elsewhere. if it does run better then either the new lambda is faulty or the wiring is shot.

have you cleared the codes then checked to see what comes back. look in the ecu measuring blocks too then you can see what the ecu thinks the coolant and inlet temps are, as well as read the throttle position to make sure thats ok as well.

[danmusic24]

ok done that,unplugged lamdba sensor and still runs bad! cleared codes and now got code telling maf error? would this cause engine to run like a dog?

[javalin]

well - couldn't see a code for 520 or 523 but

    515 is listed as "00515 - Camshaft Position (Hall) Sensor (G40): No Signal"
    537 is listed as "00537 - Lambda (Oxygen Sensor) Regulation: Upper Limit"

http://wiki.ross-tech.com/wiki/index.php/Category:Fault_Codes

>ok done that,unplugged lamdba sensor and still runs bad! cleared codes and now got code telling maf error? would this cause engine to run like a dog?
can do.  Try with it unplugged?  (though mine cuts out at idle when driving when I did that test)

james