trying to sort an intermitent fault and disconnected the lambda sensor on my monte tonight and took it for a run and it drove exactly like it normally does,surely it shuold run like a pile of crap without this? how do you test these out?

 

what car,,, whats the spec....whats your problem

 

big t esc cos,ahmed st2 usual greens pump 3 bar etc, itll run perfect till youve been cruising at around 50-60mph, for a while then it staRTS to jolt and misfire like its overfuelling,you then have to stop the car as its undrivable and the rev counter goes ballistic and the engine dies,try to start it and it stinks of fuel,but this is the interesting part ,if you leave it to cool down for 15 mins its perfect again for prob another 20 miles or so,ive changed nearly every sensor on the car,all the ignition components etc,that why i wondered about the lambda?

 

guess its on a pectel board? the lambda sensor isnt doing anything its not in the pectel software

ignition amp?

 

yep its on a pectel,so i can just blank the sensor off then? done ig amp already

 

wiring loom,,, P8 syndrom

 

am ready to sell car its pissing me off will try changing the map sensor as ive not done that yet,cant see it making any difference though

 

as per gareth, tis common aparently.

get it to a specialist with a pectel monitor etc. and they'll soon be able to diagnose, as they can watch the inputs live

 

i guess you dont have the loom plugs still??

 

Mine is running a stg 3 pectal board and the lamba sensor definately does something !!, if it gets knocked during cleaning the car won't idle at all, may have someting to do wth my overfueling too !

 

As above, it shouldnt do, not if its the original one bolted into the exhaust hiousing

 

loom plugs are gone,ive had a pectel monitor rigged up to it and everything was perfect but it obviously wasnt playing up at the time,i hate intermittent faults anyone want to lend me a p8 my lambda deffo doesnt seem to do anything,why isnt it built in to the pectel board then?

 

Really ?? , well as i mentioned if it gets knocked it starts to play up, definately got the chip in too cos i checked !!

 

And extra board?

 

THE RADMAN

As you say try the MAP sensor first..

 

An extra board mounted above the original ECU PCB board with a ribbon to the original board ??, if thats the one then yeah it has .

 

yeah sounds like that one jon

 

will go map sensor shopping tomorrow