Ok, so I think we've got the LDP testing down but i wanted to catch the opinion of you guys. Here's what we have done:
Energize the PCM power relay (using the Modis), ground center wire at LDP, Apply vacuum to LDP port, using the EELD, pressurize system, and at this point can shut off car or remove ground at LDP wire and watch for pressure loss. Whatya think guys? Does anyone know why it is so that you can at this point turn off key and de-energize solenoid? It seems that we loose vacuum at LDP when we do this yet vent stays closed. Anyone know why?
Neil
Energize the PCM power relay (using the Modis), ground center wire at LDP, Apply vacuum to LDP port, using the EELD, pressurize system, and at this point can shut off car or remove ground at LDP wire and watch for pressure loss. Whatya think guys? Does anyone know why it is so that you can at this point turn off key and de-energize solenoid? It seems that we loose vacuum at LDP when we do this yet vent stays closed. Anyone know why?
Neil
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