what the hell, new and "better" o2s oscillate like crap
07-23-2005, 01:03 PM
#1
what the hell, new and "better" o2s oscillate like crap i got some densos and went for a ride and my damn stockers went back and forth better then these damn things did. i dont get it, if someone can explain please do. only thing i can think of is the proportional fuel needs to be dropped, they oscillate but very slowly, they arent nearly as nuts as my stockers were.
07-24-2005, 09:39 PM
#2
log just the o2 sensor and see how they do.
With my new Bosch I noticed what appeared to be very lazy sensors, but after logging just the o2's I noticed they were switching faster than before, just faster than my datalogger would show when logging 24 pids.
I am just to spoiled with fast datalogging from my work on ford vehicles, 20 values, 60 frames a second.
Ryan
With my new Bosch I noticed what appeared to be very lazy sensors, but after logging just the o2's I noticed they were switching faster than before, just faster than my datalogger would show when logging 24 pids.
I am just to spoiled with fast datalogging from my work on ford vehicles, 20 values, 60 frames a second.
Ryan
07-25-2005, 01:21 AM
#4
60fps? 
I could only wish. Nothing beats the 6 to 8 fps my 98 pcm pumps out 
I'm not sure about the denso but technically the Bosch vette rear is suppose to be the new and "better" sensor. I don't think mine switch any faster than my stockers, but at idle and cold conditions they don't stop switching.
I could only wish. Nothing beats the 6 to 8 fps my 98 pcm pumps out I'm not sure about the denso but technically the Bosch vette rear is suppose to be the new and "better" sensor. I don't think mine switch any faster than my stockers, but at idle and cold conditions they don't stop switching.
07-25-2005, 07:38 AM
#6
I was tuning a 2001 Camaro SS yesterday with a big cam and he was getting "Insufficent Switching" codes from his "new" rear C5 O2's
When the codes set, he stayed in cell 22 when cruisng around, clear the codes and everything went back to normal.
What tables are the Prop fuel and what way do you go to adjust them?
I'm currently part throttle tuning a 427 C5 with a 248 252 112lsa cam and I don't have any O2 problems and it switches just fine.
When the codes set, he stayed in cell 22 when cruisng around, clear the codes and everything went back to normal.
What tables are the Prop fuel and what way do you go to adjust them?
I'm currently part throttle tuning a 427 C5 with a 248 252 112lsa cam and I don't have any O2 problems and it switches just fine.
07-25-2005, 07:58 AM
#7
prop fuel is in the closed/open loop section. with bigger injectors these values have to be smaller, or should be at least. the better o2s seem to need less of a fuel shot to oscillate so i had to decrease the numbers more. i have seen a slight improvement but the true test will be actually driving around to see waht they do. hopefully i can play with this to get it right.
Trending Topics
Hopefully you get this all worked out...
07-25-2005, 08:12 AM
#9
TECH Junkie
iTrader: (28)
Join Date: Jan 2004
Location: Houston
Posts: 3,250
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by WS6FirebirdTA00
with bigger injectors these values have to be smaller, or should be at least.
07-25-2005, 09:12 AM
#10
Originally Posted by WS6FirebirdTA00
i got some densos and went for a ride and my damn stockers went back and forth better then these damn things did. i dont get it, if someone can explain please do. only thing i can think of is the proportional fuel needs to be dropped, they oscillate but very slowly, they arent nearly as nuts as my stockers were.
While in idle and warm up, the Denso do oscillate slow, but once we were moving, they were consistantly oscillating very rapidly. We no longer have insufficient switching that the old O2 had. The fuel trims are much better as well. 
Glad I bought mine, this car needed them. 
07-25-2005, 11:44 AM
#11
Originally Posted by Flame Throwing SS
I just put in a pair of Denso O2s in our 2001 Camaro SS. Finally replaced the 132K mile OEM. While in idle and warm up, the Denso do oscillate slow, but once we were moving, they were consistantly oscillating very rapidly. We no longer have insufficient switching that the old O2 had. The fuel trims are much better as well. Glad I bought mine, this car needed them.
While in idle and warm up, the Denso do oscillate slow, but once we were moving, they were consistantly oscillating very rapidly. We no longer have insufficient switching that the old O2 had. The fuel trims are much better as well. Glad I bought mine, this car needed them. 