Along with Davids comments I'd suggest visually inspecting the inner lead of the O2 green coax near the connector on body portion of harness. I see the warm start issue was present before the O2 sensor was swapped out, but a break at the inner wire casing can allow strands of the coax shield to touch the centre lead. This fault could be intermittent. A little WD40 makes it easy to slide back the rubber boot at the connector. Neil.
On 11/19/16, David Beierl <dbeierl@attglobal.net> wrote:
> > Oxy sensor shorted to ground is the other huge villain (along with > Temp-II) giving super-rich operation, but even on a warm start that > shouldn't have any effect at the moment of starting; it kicks in 30 > seconds or a minute later, just long enough to get from the motel > parking lot to the road before it suddenly hates idling. Still, I > suggest with any running problem at all to disconnect the sensor, > check that the line isn't grounded (should see ~.45 volts on the ECU > side with a digital voltmeter), and leave it disconnected until the > engine is running properly. The only thing that needs it is the > catalytic converter, and it can really mess you up. > > Yrs, > d >
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