During cruising the BLM/INT are frozen and the engines is running lean.
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Joined: Dec 2007
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From: Tucson
Car: K1500
Engine: 7.4L
Transmission: 700R4
Axle/Gears: 4.10:1
During cruising the BLM/INT are frozen and the engines is running lean.
Maybe this is normal but I’m not sure. I’m using EBL-Learn and just started tuning my slightly modified (RV Cam) TBI-7.4L engine. I noticed during my drive home the ECU is making adjustment to the BLM/INT to achieve the correct fuel air mixture and everything is doing just fine, but then I noticed during mostly freeway cursing the BLM-135/INT-128 seem to be frozen with no movement and the engine is running very lean, about 50MV output from the O2 sensor. My question is, is this A “Lean Cruise” operation of the ECU or is there something wrong? If this is normal operation can I change in the BIN to stop this type of ECU behavior. Byron T
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: During cruising the BLM/INT are frozen and the engines is running lean.
Highway mode lean cruise, improves the fuel consumption quite a bit. To disable it set the MPH to enter highway mode to 245 MPH (HiWy - Min MPH).
RBob.
RBob.
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