AEM Wideband sensor troubles

[Ibiza125]

I just fitted a wideband sensor in place of the 2nd lamba sensor. I have a decat so it's not after a cat, but the readings are mad all over the gauge going from 11 to 16 to "- - -" and then back, just totally random readings and I'm not sure why... Does it take a while for the sensor to heat up? Even after taking it for a run it was still erratic on it's readings...

Any ideas at all?

 

[PhilW]

Have you wired the gauge it into the dimmer switch?

Turn the dimmer up to full power.

 

[Berg]

I was told further away from the turbo can give inaccurate readings?

 

[tstrahonja]

I think it has to be much closer to the turbo...

 

[PhilW]

It needs to be 18" inches from the turbo iirc. Heat can kill lambda sensors.

 

[Berg]

When i bought my stack wideband the instructions said for turbo cars install 6 inches away from the turbo on the downpipe lol

Either way mine is down by the pre-cat lambda as i have a sports cat.

Sorry i cant help you here

 

[Ibiza125]

Have you wired the gauge it into the dimmer switch?

Turn the dimmer up to full power.

Will try this. I think it is on the dimmer switch iirc...

It does it as well before I actually start the car... So something not right!

I will go and try it now actually.

 

[ibizacupra]

It needs to be 18" inches from the turbo iirc. Heat can kill lambda sensors.

factory k04 lambda' sit 6" from turbo in downpipe

 

[Ibiza125]

Problem sorted! Cheers Phil! It goes from 14.5 - 15.3 on idle is it normal to deviate constantly between these 2 values?

 

[ibizacupra]

why have you powered it up off a dimmer switch???

 

[Ibiza125]

I wouldn't have done it myself but there was already a boost gauge fitted when I bought the car so I've always just tapped in off that.