Runs very lean at idle
10-23-2008, 12:14 PM
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Car: 1985 Camaro Z-28
Engine: 385
Transmission: th700r4+Edge 2800 stall
Axle/Gears: 3.42
Runs very lean at idle
Hi,
what causes this.At idle Blm&Int=108,Innovate wb shows 16...18afr.Lambda is one wire bosch,and it is ~10" downstream from exhaustport at cyl 5 primary(coated Slp tri-y's).Crosscounts go up and down.When running open loop(cold engine),afr is more steady.When goes to closed loop,afr is unstable and goes lean(16...18).
Ecm is -870 with Lsracingchips tune.Engine is 355,eq vortec's,hotcam,stealthram,58mm tb,24lbs fms injectors(47psi),msd probillet+blaster2+6A box,slp tri-y's.
what causes this.At idle Blm&Int=108,Innovate wb shows 16...18afr.Lambda is one wire bosch,and it is ~10" downstream from exhaustport at cyl 5 primary(coated Slp tri-y's).Crosscounts go up and down.When running open loop(cold engine),afr is more steady.When goes to closed loop,afr is unstable and goes lean(16...18).
Ecm is -870 with Lsracingchips tune.Engine is 355,eq vortec's,hotcam,stealthram,58mm tb,24lbs fms injectors(47psi),msd probillet+blaster2+6A box,slp tri-y's.
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