Lambda sensor
01-07-2007, 02:25 PM
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Lambda sensor
How would my Escort Cosworth act if my Lambda was broken???
My car startes perfect.. cold and warm but it startes with VERY BLACK smoke (for about 30-60 sec) and when I give some throttle I cant see any black smoke.. might the pressure that blows the smoke away.
If you say overfuelling well ok.. I am very sure it uses some more fuel than before I noticed something was wrong and my rear bumper got very sod black around the exhaust, but it dont cut or do limp mode.. and it boost with no problems.
My car startes perfect.. cold and warm but it startes with VERY BLACK smoke (for about 30-60 sec) and when I give some throttle I cant see any black smoke.. might the pressure that blows the smoke away.
If you say overfuelling well ok.. I am very sure it uses some more fuel than before I noticed something was wrong and my rear bumper got very sod black around the exhaust, but it dont cut or do limp mode.. and it boost with no problems.
01-07-2007, 06:17 PM
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hmm..it is brand new, well all my sensors beside the Lambda is brand new sensors, and my very smart IAW monitor shows that that everything is as it should be, BUT the only info I dont get from my IAW it lambda info, cause (so fare I am aware of) the chip (COLLINS) dont send this info out to my IAW.
COULD this be a lambda?? Or would the car act in an other way??
I could drive to a garage and get a CO test
.. but thats not possible when I must sit here all the time read PF posts 
COULD this be a lambda?? Or would the car act in an other way??
I could drive to a garage and get a CO test
.. but thats not possible when I must sit here all the time read PF posts
01-07-2007, 06:29 PM
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Black soot is running very rich, lamda would not act up like this normally, it would do it all the time.
Iit's NOT going to show up, a faulty CTS as it has such a wide range , it is normally within range just not at the resistance it should be at the temp it should be.
Do you have another lamda to swap in there to try, old one maybe if not just get the metre on it when cold/hot and see what it reads.
Obviously there will be major problems if no lamda reading is getting to the ecu, so after checking at lamda if ok check at ecu, check also if it has a HEGO sensor the heater circuit.
tabetha
Iit's NOT going to show up, a faulty CTS as it has such a wide range , it is normally within range just not at the resistance it should be at the temp it should be.
Do you have another lamda to swap in there to try, old one maybe if not just get the metre on it when cold/hot and see what it reads.
Obviously there will be major problems if no lamda reading is getting to the ecu, so after checking at lamda if ok check at ecu, check also if it has a HEGO sensor the heater circuit.
tabetha
01-07-2007, 07:16 PM
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Originally Posted by tabetha
Black soot is running very rich, lamda would not act up like this normally, it would do it all the time. It is doing it all the time I think... I just think I cant see it when driving, cause when I wash the car it only takes a few days to get soot on the bumper
Iit's NOT going to show up, a faulty CTS as it has such a wide range , it is normally within range just not at the resistance it should be at the temp it should be. Yes.. but CTS shows fine/realistic temps when using IAW.. and this tool should be very reliable. And I do have another CTS in stock if I need it
Do you have another lamda to swap in there to try, old one maybe if not just get the metre on it when cold/hot and see what it reads. Dont have.. but may trye a frieds lambda if I say please, but I will get the meter on it anyway
Obviously there will be major problems if no lamda reading is getting to the ecu, so after checking at lamda if ok check at ecu, check also if it has a HEGO sensor the heater circuit. Oh I am sure the lambda reading comes to the ECU, but as I understand the P8 just dont give that info to the IAW monitor software, cause I drive COLLINS-chip wich dont release this info. If I had a MSD chip.. it would as I understand.
tabetha
Iit's NOT going to show up, a faulty CTS as it has such a wide range , it is normally within range just not at the resistance it should be at the temp it should be. Yes.. but CTS shows fine/realistic temps when using IAW.. and this tool should be very reliable. And I do have another CTS in stock if I need it
Do you have another lamda to swap in there to try, old one maybe if not just get the metre on it when cold/hot and see what it reads. Dont have.. but may trye a frieds lambda if I say please, but I will get the meter on it anyway
Obviously there will be major problems if no lamda reading is getting to the ecu, so after checking at lamda if ok check at ecu, check also if it has a HEGO sensor the heater circuit. Oh I am sure the lambda reading comes to the ECU, but as I understand the P8 just dont give that info to the IAW monitor software, cause I drive COLLINS-chip wich dont release this info. If I had a MSD chip.. it would as I understand.
tabetha
I will check things up as you describe.. thanks
and you may comment my red comments if you cant sleep 
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05-07-2007, 11:00 AM
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can`t beat that for an answer
this is why my rs200 will be going to stu when running (in a few years
dave
Originally Posted by Stu @ M Developments
Check the MAP sensor reading when you start it cold at idle are similar
to when its warm. Maybe do a datalog cold and hot in ILD encoded data and send it to me and i will have a look for you.
to when its warm. Maybe do a datalog cold and hot in ILD encoded data and send it to me and i will have a look for you.
this is why my rs200 will be going to stu when running (in a few years
dave
05-07-2007, 06:18 PM
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Originally Posted by Stu @ M Developments
Check the MAP sensor reading when you start it cold at idle are similar
to when its warm. Maybe do a datalog cold and hot in ILD encoded data and send it to me and i will have a look for you.
to when its warm. Maybe do a datalog cold and hot in ILD encoded data and send it to me and i will have a look for you.
.. I have done it cold and warm and they are very alike (map sensor).Have checked everything, especially mapsensor and CTS and they work VERY well, thanks good for that (they are in fact new
)... only thing I have been unsure about was the lambda. Had a co-test yesterday, and it "only" said 7% 
By the way.. I also tryed to disconnect the lambda etc.. and only the lambda makes NO difference.. so.. well.. it speaks for it self I guess!
I will get my lambda in a few days.. I will keep you posted
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