the engine managment light is on in our focus so i put it on my mates computer and it came back with p0141 generic o2 sensor heater circuit malfunction bank 1 sensor 2.now i take it that is just a lambda or am i wrong now if im right are there 1 or 2 of them and if there are 2 which one is it that is fubered any help much appreciated.

 

anybody

 

hi mate i had bank 1 sensor 1 and bank 2 sensor 2 go on my st170 i used to own i think sensor 2 is the one after the cat these are a common fault on st170's have a look in the other post i made at the time ive listed part numbers price etc from when i did mine you could always unplug the first sensor just to double check its the rite one if you have a fault code reader it should pop a bank 1 sensor 1 fault up hope this helps cheers mark

 

thanks mark il whip it out tommorrow clean it up an give it a good kicking.it doesnt get used in anger by the mrs so might just be covered in soot or something as it is still running fine thanks again

 

Yes sensor 1 is pre cat, sensor 2 is post cat.

I had the same fault but for the pre cat sensor, made it drive so much smoother after I changed it!

The post cat sensor doesn't affect the running of the engine at all, it is just to tell the ecu that the cat is working properly.

 

have a read here pal some of the info posted may help you

https://passionford.com/forum/techni...141-p1518.html

cheers mark

 

hi mark just had a read at your post the faults you came up with were the same we had but like you i was thinking both sensors going at the same time was highly unlikely.i also had a tinker with the imrc box but ended up buying one for £180 but its only been on for a day so might try and fix the old one and send it back i take it yours is still working fine if anyone else has this prob here is the link to marks post thanks again mark

https://passionford.com/forum/techni...141-p1518.html

 

sorry mate didnt see your post

 

cheers pal i had a bad do with my st170 to say the least mate after getting it running right the clutch went in mine and at that point id had enough was getting quotes at 800+ to change the clutch and flywheel so i sold it spares or repair at a loss was gutted though i do like the focus though so i bought a 2002 zetec tdci 3 door in black its almost fully loaded though has some mods now 40mm drop 17" diamond cut fox wheels tinted smoked rear lights trip comp fitted sebring backbox its not finished yet though needs st170 fogs & grills rear spoiler maybe a st170 or leather trim just bits i fancy doing when i get round to it

 

keep telling the mrs to pull away in first instead of pulling away in second at slow speeds dont fancy taking the box out must weigh a ton whats the deal with the flywheels is it one of those floating numbers.ours is just standard 25mm eibach springs and a panel filter original wheels done black but wouldnt mind a set of rs 7s for it its in the best colour too imperial blue

 

yeah i no what u mean mine died at 115k it still drove but was slipping

yeah the dreaded dual mass flywheel a clutch and master cylinder it needed

tbh im a fan of the standard wheels they dont like bad weather too much but i think there one of the best wheels for the car i do like the way st170s drive from factory there a good all round combination of comfort & handleing mines sat quite low so its pritty harsh it handles well but your deffo best avoiding bumps/potholes for sure lol

 

hopefully ours should last a while then its only done 30000mls.yeah ours sits quite low but still comfy does crash and bang when you hit holes though need to avoid everything although its nowhere near as bad as my fiesta i need to avoid cracks in the road with that lol