Quote:
Originally Posted by Karl
I say check your o2 sensors.
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I agree. I've had issues like described, twice; both times the O2 was at fault.
Best tool in the box is the scanner I bought that has data-logging capability. I'm told TunerPro and a loptop too is even better - just might not fit in the cubby behind the passenger seat like where my scanner lives.
I tell ya...that scanner has paid for itself many, many times over in frustration alone by pointing to issues instead of having to guess. O2s have had issues that didn't throw codes, on two occasions. But, the scanner pointed to signal issues; once a connector problem, and the other two were outright O2 failures*.
*I'm my own worst enemy sometimes. I installed new O2s and for good measure I sealed the wires entry to the sensor with RTV to keep "whatever" out.
However, that led to another problem as the O2s (I found out later) depend on the opening where the wire leads enter the sensor as access to oxygen the sensor depends on to function! $150 and two sensors later I figured that out!
