Need Recommendations on Scan Tools
#18
Join Date: Jun 2002
Location: Under the flightpath of old ORD 22R
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Originally posted by f150intally
Do any of these softwares give you Air/Fuel Ratio readouts? That would be Awesome!
Do any of these softwares give you Air/Fuel Ratio readouts? That would be Awesome!
Remember that this is using the narrow band O2 sensor that the PCM uses, so if it gets too far away from 14.7:1 it will not be all that accurate.
Don't know what you are looking for with the A/F ratio, but if you want to track it very closely, then you would need a Wideband O2 Sensor and meter setup, but now you are talking in the $1,000 + range for a FJO gauge and a wideband O2 Sensor ( I think they use a Bosch sensors ?? ).
Unless you are wanting to track the closed loop vs open loop operation to an exact point, the narrow band O2 sensor and AutoTap or a A/F Gauge should do what I think you are after.
My $$ went to the Autotap software, and an Autometer A/F Gauge.
NOTE : An A/F gauge in your truck is not for tuning, only a general idea. All tuning should be done off of a Dyno, where exact measurements and data logging can be done.
Just my disclaimer.
Hope I got it all correct...someone will be along shortly to flame me if I got it wrong ( and rightfully so... )
Last edited by SSCULLY; 12-10-2002 at 12:57 AM.
#19
#20
Here is an update for the Auterra...
Last Friday I checked the codes on a friend’s '96 Cadillac STS. Came up with two codes...one related to fuel/air and the other was for EGR pintle position. Turned out to be the EGR was sticking. On the web I found out that GM has changed their software to periodically cycle the EGR valve to help clean of the carbon. The problem was fixed after cleaning off the carbon and replacing the EGR valve.
This is a lot more fun than looking at a "check engine" light and wondering where to start!!!
Last Friday I checked the codes on a friend’s '96 Cadillac STS. Came up with two codes...one related to fuel/air and the other was for EGR pintle position. Turned out to be the EGR was sticking. On the web I found out that GM has changed their software to periodically cycle the EGR valve to help clean of the carbon. The problem was fixed after cleaning off the carbon and replacing the EGR valve.
This is a lot more fun than looking at a "check engine" light and wondering where to start!!!
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