Lambda probe sensor location
#11
12-01-2020, 09:19 PM
What is the part number that AutoZone noted? O2 sensors are ignored when first starting the motor, called open loop, so any miss or long cranking are not due to an O2 sensor.
A long crank time could be a fuel pump. You will need to check the fuel pressure at the fuel rail when starting; needs to be 45+ psi if I recall. Could have a dirty fuel injector, suggest adding some Techron to the fuel tank next fill up.
When was the last tuneup? The 3.3l is plugs, wires and a 6 terminal coil pack (that can go bad occasionally) if I recall. Could be corrosion on the coil pack terminals.
A long crank time could be a fuel pump. You will need to check the fuel pressure at the fuel rail when starting; needs to be 45+ psi if I recall. Could have a dirty fuel injector, suggest adding some Techron to the fuel tank next fill up.
When was the last tuneup? The 3.3l is plugs, wires and a 6 terminal coil pack (that can go bad occasionally) if I recall. Could be corrosion on the coil pack terminals.
As for the " missing " problem. I have had trouble out of the wiring harness that goes to the fuel injectors on the front bank. I wound up completely rewireing one of then and patched the wires on a couple of he others.
Last edited by tazmaniac_37752; 12-01-2020 at 09:25 PM.
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