Quote:
Originally Posted by davestx
Thanks for the explanation. That helps me rule out the O2 sensor.
The EHA is suspect to me because that is the newest part that was swapped in (prior to the ICU) and it was used. Is it possible that the EHA is the culprit or that is set too lean?
Regarding the spark plugs and wires, It is raining but I am 99% sure that the spark plugs are NGK BP5ES (they could be BP6ES). The wires are the correct Bosch resistor wires. I can get the numbers of the wires later today.
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If by "resistor wires" you mean copper conductor w/resistor cartridge at the spark plug connection, then that is correct. If RFI suppression, non-metallic conductor type, not so good; total resistance is likely to be too high.
There is an off chance that the fuel pump relay is the culprit. Since it serves as the rev-limiter, it could be triggering early, OR, mechanical vibration of one of the internal contactors, in sympathy with engine vibration could be interrupting the pump circuit.