Summit Racing Digital Air/Fuel gauge?
09-25-01, 01:22 PM
#1
8krpm is not enough
Thread Starter
Summit Racing Digital Air/Fuel gauge?
Ok, so I rigged up my brand spanking new Summit Air fuel gauge today and of course took her for a test spin (had to see what my brand spankin new Bosch O2 sensor was doin 
) and I noticed some odd behavior.
At idle and anything less than 1/4 throttle or so (no matter what RPM, 1/4 throttle at 4000rpm or 2000rpm) I get NO BARS at all. 0, none, nil. Hm, odd I thought. If I just give it a touch more than 1/4 throttle or so it jumps around like the ECU is in closed loop mode, ok, seems normal, at WOT it's 1-2bars into the rich side, ok, cool...but I was wondering, do all of you w/ these gauges (or any O2 gauge for that matter) have any similar readings? Does the O2 sensor need a higher gas flow to read that it's not getting at lower throttle settings? Do I have a bad ground to the sensor?? This is kinda freakin me out, and I'm really hoping that the ECU is getting a good signal despite that, or it may explain my terrable (albeit better now) gas milage.
Thanks guys,
--matt
) and I noticed some odd behavior.At idle and anything less than 1/4 throttle or so (no matter what RPM, 1/4 throttle at 4000rpm or 2000rpm) I get NO BARS at all. 0, none, nil. Hm, odd I thought. If I just give it a touch more than 1/4 throttle or so it jumps around like the ECU is in closed loop mode, ok, seems normal, at WOT it's 1-2bars into the rich side, ok, cool...but I was wondering, do all of you w/ these gauges (or any O2 gauge for that matter) have any similar readings? Does the O2 sensor need a higher gas flow to read that it's not getting at lower throttle settings? Do I have a bad ground to the sensor?? This is kinda freakin me out, and I'm really hoping that the ECU is getting a good signal despite that, or it may explain my terrable (albeit better now) gas milage.
Thanks guys,
--matt
09-26-01, 08:15 PM
#4
09-27-01, 10:42 AM
#5
EliteHardcoreCanuckSquad
Join Date: Mar 2001
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One quick question. Is the car fully warm?
When the car is cold the oxygen sensor isn't working properly. They have to be heated up before they read accuratly.
I have an autometer guage in my GSL-SE and at idle I'm 1 bar rich and then it's bounces in the stoich area under normal driving.
Under deceleration it goes a little lean.
Hope this helps.
When the car is cold the oxygen sensor isn't working properly. They have to be heated up before they read accuratly.
I have an autometer guage in my GSL-SE and at idle I'm 1 bar rich and then it's bounces in the stoich area under normal driving.
Under deceleration it goes a little lean.
Hope this helps.
09-28-01, 05:13 AM
#6
8krpm is not enough
Thread Starter
yeah, it acts that way even while letting the car idle at work after the "spirited" drive in....
I'm gonna double check the ground, but since it seems to return good values most of the time I'm not too worried. It's just odd that it's blank while idling and on decel.
tho on decel I can understand, since the ECU cuts fuel to the rear rotor and the O2 sensor is mounted on the rear end of the manifold...
--matt
I'm gonna double check the ground, but since it seems to return good values most of the time I'm not too worried. It's just odd that it's blank while idling and on decel.
tho on decel I can understand, since the ECU cuts fuel to the rear rotor and the O2 sensor is mounted on the rear end of the manifold...
--matt
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