ltslimjim
Thread starter
So, I did the drive test WOT shows .8 V and higher and DFCO shows under .2 V and flatlines to .000 within 2-3 seconds max.
Question: Is it normal for speeds under 40 MPH when the torque converter is no longer locked up for the ST fuel trim to show the computer adding fuel even while no throttle is applied? Or is that the engine keeping itself from staling when the RPMs drop; no longer able to keep fuel cut off?Seems like common sense.
So, it appears as though the rear 02 is working fine. I’ll post up the Freeze Frame data next time the code trips.
I suppose the car just isn’t as efficient these days. It’s just strange to me that light throttle ST FT has the computer request 7-16% fuel and that isn’t considered excessive? Is that a symptom of fuel system lagging behind? It doesn’t appear to be a problem at WOT.
Question: Is it normal for speeds under 40 MPH when the torque converter is no longer locked up for the ST fuel trim to show the computer adding fuel even while no throttle is applied? Or is that the engine keeping itself from staling when the RPMs drop; no longer able to keep fuel cut off?Seems like common sense.
So, it appears as though the rear 02 is working fine. I’ll post up the Freeze Frame data next time the code trips.
I suppose the car just isn’t as efficient these days. It’s just strange to me that light throttle ST FT has the computer request 7-16% fuel and that isn’t considered excessive? Is that a symptom of fuel system lagging behind? It doesn’t appear to be a problem at WOT.