Lambda Sensor

Appologies if this is not the correct place to post this.

I have an FRP Spec engine in my MK4 Fiesta. Its recently undergone some work as it was running quite badly. However I cant seem to get the lambda sensor to work, making the ride a bit jerky at very low revs.

The wires have been checked and there is continuity from the Lambda to the ECU. The sensor has been changed but nothing still.

Any advice or help?

which ECU are you using..

Chris

Genuine FRP.

I believe its a TAPE

tried the maf sensor? causes similar symptoms, disconnect the plug see if it changes.

No i mean the lambda sensor is not working at all, checked on diagnostics and it reads nothing

does anyone also know the codes - 351 and 352?

[L8FRP]

could just be that by chance you fitted a duff one??

after rewiring it, we fitted 3 different sensors and nothing. Whats the chances of all 3 being duff lol.

Will try rewiring it and see what happens

[L8FRP]

First thing id do, would be to put a mulitmeter across the incomming wire loom to see if it has power going to it

Did all that. Checked all wires and they all seemed to match up and had continuity across them all.

Maybe i misread one or something.