Quote:
Originally Posted by Sopicki
A rich mixture sounds likely to me, but how do you test the electrohydraulic actuator?
Thanks,
Bob
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With ignition on and engine not running, the current to EHA should be 20 mA.
With engine running, the value should fluctuate +/- 3 mA according to feedback from oxygen sensor.
The resistance of EHA should be 19,5 ohms.
Otherwise, there is really no other way to test it.
It works so that it will provide a certain differential pressure when no current is supplied, and it will provide more or less differential pressure with current flow in one or the other direction.
Its center position is (as well as understand) springloaded.
I don't know what can go wrong inside it, but in my case, it provided too much pressure (too rich mixture) no matter what input it got.