in school boy explanation how doyou test these as i think
mine is not working rite when it gets hot!

 

wideband or narrow-band sensor?

 

std sensor on downpipe of large turbo escort cosworth ( narrow band )

 

you can test the actual sensor itself with a gas blowtorch (if it's a Zirconia type sensor) and a multimeter

http://www.fpuk.co.uk/technical/ttl2.htm

BUT, please check with Stu first to see if the EsCos standard one is Titania construction, as I don't think it works the same way with the blowtorch test..

http://www.fpuk.co.uk/technical/ttl1.htm

 

I see the titania version goes from 1-5volts i think cosworths on narrow band work between -1 to +1. can someone verify this?

 

btt

 

they are narrowband, 0-1v.

 

but some titania sensors are 0-1V output too... I have a sneaking suspicion the standard 12mm thread (mounted in the turbo exhaust housing) Cosworth ones may well be.