car running lean sometimes

[Rev]

I have seen posts saying safc only works at open loop higher revs with load ( maybe this is safc1 ? ) but I have safc2 and with the engine warmed up it definitely adjusts the fuel at low revs, at high revs and under low,medium , high load and boost conditions . All I can suggest is Safc2 wiring may not be fully connecting ?

 

[Sheldon]

been running over a year without a lambda and no problems at all.. so i guess that would be fine....

are you using a stock loom? (as i think you have a converted starlet?)

if no, can you re-check wireing..?

 

[rage]

good to hear that someone has been running lambda-less for a year

checked all the wires i could think of, all seemed fine.
and if there would be a faulty wire it would not explain that the car doesnt have this problem once it's warm.
it's a stock loom but i rewired it for the wire tuck.

running safcII and it does indeed change fueling on low revs. the thing works like a charm.
the safc can't be at fault as when i remove lambda signal, the safc works perfectly. give the ecu the lambda signal again and it messes up the fueling and goes lean
everything i tested was in fine condition, last thing to test is the ecu. bought one from thorpy and should be arriving some time nxt week.
hope that that solves the problem