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Super strange issue.. stumbling under mild throttle
#5
wrong 02 sensors on this car is easy to do, so many there are but only 1 works.
0v is lean causes ecu to go rich
.45 is unplugged reading default caused by ECU resistor divider inside ECU
.9 is rich, causes ECU to go super lean.

the older the car the (evolution not wear) the the more fuel mix damage is done with bad O2, back then it had too much control. even causing flooding he engine or blackened spark tips.
02 open loop that is a hard question, I'd say yes if rpm is 800 and CEL lamp not stuck on.

this old ECU is super dumb and can be fooled easy
best is all inputs good. to ECU.

even this old car still running is like magic.
good luck to you, on all work and the car, and cheers.
http://www.fixkick.com
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RE: Super strange issue.. stumbling under mild throttle - by fixkick - 03-12-2022, 02:27 AM

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