Afr changed after battery got disconected
04-25-2020, 06:58 AM
#1
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Afr changed after battery got disconected
Last week i tuned a 94 1.8 for a client with ms2.
the car has a broken afr gauge in the sence that it does work for monitoring bit doesnt give a voltage signal to the ms(wil be sent back for waranty).
so i decided while i stil have the gauge i would make a tune so my client can move the car.
i disabled al ego o2 correction settings and modified the map manually to get good afr's under most circumstances .hoping to finetune it when i get the gauge back or a new one.
my client picked up the car and it drove so good that he couldt restrain himself and went driving alot first 2 days until while driving his battery terminal got disconnected.
after he reconnected the battery the car was way way rich al around and was even idling at 9 afr.
ive tried to lower fuel and even at crazy low levels it now idles high 11's.
i have the car back now and can datalog but i dont think it wil be usefull because i cant see afr on the log.
im stuck, annyone ever had annything hapen like this or know where i need to start looking?
the car has a broken afr gauge in the sence that it does work for monitoring bit doesnt give a voltage signal to the ms(wil be sent back for waranty).
so i decided while i stil have the gauge i would make a tune so my client can move the car.
i disabled al ego o2 correction settings and modified the map manually to get good afr's under most circumstances .hoping to finetune it when i get the gauge back or a new one.
my client picked up the car and it drove so good that he couldt restrain himself and went driving alot first 2 days until while driving his battery terminal got disconnected.
after he reconnected the battery the car was way way rich al around and was even idling at 9 afr.
ive tried to lower fuel and even at crazy low levels it now idles high 11's.
i have the car back now and can datalog but i dont think it wil be usefull because i cant see afr on the log.
im stuck, annyone ever had annything hapen like this or know where i need to start looking?
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04-28-2020, 09:14 AM
#2
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Last week i tuned a 94 1.8 for a client with ms2.
the car has a broken afr gauge in the sence that it does work for monitoring bit doesnt give a voltage signal to the ms(wil be sent back for waranty).
so i decided while i stil have the gauge i would make a tune so my client can move the car.
i disabled al ego o2 correction settings and modified the map manually to get good afr's under most circumstances .hoping to finetune it when i get the gauge back or a new one.
my client picked up the car and it drove so good that he couldt restrain himself and went driving alot first 2 days until while driving his battery terminal got disconnected.
after he reconnected the battery the car was way way rich al around and was even idling at 9 afr.
ive tried to lower fuel and even at crazy low levels it now idles high 11's.
i have the car back now and can datalog but i dont think it wil be usefull because i cant see afr on the log.
im stuck, annyone ever had annything hapen like this or know where i need to start looking?
the car has a broken afr gauge in the sence that it does work for monitoring bit doesnt give a voltage signal to the ms(wil be sent back for waranty).
so i decided while i stil have the gauge i would make a tune so my client can move the car.
i disabled al ego o2 correction settings and modified the map manually to get good afr's under most circumstances .hoping to finetune it when i get the gauge back or a new one.
my client picked up the car and it drove so good that he couldt restrain himself and went driving alot first 2 days until while driving his battery terminal got disconnected.
after he reconnected the battery the car was way way rich al around and was even idling at 9 afr.
ive tried to lower fuel and even at crazy low levels it now idles high 11's.
i have the car back now and can datalog but i dont think it wil be usefull because i cant see afr on the log.
im stuck, annyone ever had annything hapen like this or know where i need to start looking?
Last edited by Joker; 04-28-2020 at 01:04 PM.
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04-28-2020, 10:52 AM
#3
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Yes it was.the cause was a china bov. Coincidentally the battery happened that same day and thats when he noticed it.strangellybthe map signal was readding good so that threw me off but i blocked the bov and it was back to normal.relieved i didnt burn annything in the ecu
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04-28-2020, 01:04 PM
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Yes it was.the cause was a china bov. Coincidentally the battery happened that same day and thats when he noticed it.strangellybthe map signal was readding good so that threw me off but i blocked the bov and it was back to normal.relieved i didnt burn annything in the ecu
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04-28-2020, 01:34 PM
#5
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Thanks.ive got thrown off track because my client only noticed it when his battery got disconnected but it was apparently earlyer that the problem started.so i tought i fried sommething from the overvoltage of the alternator.
what was it that caused your problem?
what was it that caused your problem?
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