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Re: EVAP /ELCD purge valve operation Posted by TML [Email] ![]() ![]() ![]() In Reply to: Re: EVAP /ELCD purge valve operation, Ari ![]() |
Thanks for the info. I need to get clarification on a couple of things. This 4.5 minute on, 0.5 minute off cycle... is it supposed to continue that way ad infinitum? Because that's what it does.
If the intake manifold pressure has to be below 90kPa in order for the valve to switch on, does that mean the valve should stay off during acceleration? That doesn't happen, it continues to pulsate even during acceleration (excepting that half second pause I mentioned before). Could this point to a pressure sensor problem?
I am using a scopemeter, so I do see the waveform, but the instrument has no ground. I'm just measuring potential between the two terminals on the plug. I'm going to take some more readings using ground as a reference, instead of just between the two pins.
posted by 142.179.15...
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