New answers tagged cel
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So it turned out not to be so complicated after all but a rather extensive investigative process. I can't for certain say it was this ONE thing that caused the problem, but rather a combination! It was due a service, so I did athe full service with premium parts expecting that maybe the old spark plugs might have been causing the issue. However, the issue ...
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You have misconceptions about how it all works together.
First, what @EᑎOT is accurate. The easiest way to deal with the ECU when the cat is removed is to put a dummy O2 sensor in place of a real one. If a "dummy" O2 sensor is in place of the original one (which actually works) it sends a constant signal back to the ECU in the "accepted range&...
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In my experience, when the car's catalytic converter is removed permanently, the sensors are replaced with a placebos, that respond (e.g. have certain resistance) in the way that the ECU expects when the converter is installed and functioning.
In most cases the above is easier than reprogramming the ECU.
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