C20XE Fault Codes - Crank sensor ?

[Markd89]

Recently bought a corsa c20xe, cheap. suspected headgasket failure.
Upon inspection it isnt the headgasket ( i dont think )

I have full compression on all cylinders, doesnt overheat just sometimes doesnt start.
I went to it this morning and it fired up then cut out ofter 3 minutes of idling and hasnt started since.

I flashed the codes and got

31 - Crank sensor
66 - Carbon monoxide potentiometer high voltage
73 - airflow sensor voltage low - i unplugged this to see if it was working

Any ideas, maybe just try a crank sensor and see what happens ?

Engine is the early type.

cheers

[swedge]

id definitely try the crank sensor but sometimes you get that error as the engines not running when doing the test

66 - Carbon monoxide potentiometer high voltage

isnt that the lambda?

73 - airflow sensor voltage low - i unplugged this to see if it was working

do you get that error with it plugged in?

[istf]

Recently bought a corsa c20xe, cheap. suspected headgasket failure.
Upon inspection it isnt the headgasket ( i dont think )

I have full compression on all cylinders, doesnt overheat just sometimes doesnt start.
I went to it this morning and it fired up then cut out ofter 3 minutes of idling and hasnt started since.

I flashed the codes and got

31 - Crank sensor
66 - Carbon monoxide potentiometer high voltage
73 - airflow sensor voltage low - i unplugged this to see if it was working

Any ideas, maybe just try a crank sensor and see what happens ?

Engine is the early type.

cheers

The Crank sensor code is usually, when the engine is not running while read the codes, so you can ignore it.
I think the airflow sensor is (one of) suspect, but the Lambda sensor is also can do this "funny" things (sometimes without check engine light)...

[swedge]

if i remember right the lambda on starts working when its up to temp so after 3 mins idling it would be up to temp so it could be that

[Markd89]

Was the fuel pump, no fuel getting to the rail, new fuel pump and job done, going to do cambelt and waterpump on it just for the safe side

[istf]

Nice catch! :)