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| v6 egr control solenoid??? (Page 2/2) |
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GDC88
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DEC 01, 04:34 PM
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DUH!
Yes, The Fiero Factory. Glad someone's paying attention.
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Romsk
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SEP 03, 09:01 PM
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Look at the photo of the EGR Solenoid, the big drum shaped piece on the right is a built-in air filter. The port on that side is a vent that let's atmospheric air pressure into the EGR vacuum line when the solenoid is off. So air flows from that port, through its filter, and to the EGR vacuum line to fill (release) the vacuum with air. I just found out the rubber hose
from the vent goes to a thin steel tube against the fire wall, that tube goes over toward the air cleaner (but not in in) to draw in cooler air into the solenoid rather than the air surrounding the solenoid which is much hotter.
The Fiero Store just told me AC Delco has discontinued the EGR Solenoid. I am going to make my own with a two way air valve, a small air filter, and a vacuum switch.
It won't look the same but it will be better than the OEM solenoid.
By the way. I am reading 7 Meg Ohms across the Solenoid Input pins. I get infinite Ohms when I reverse the leads. Is this correct? Is it a simple solenoid control or is there more electronics inside it? That high resistance seems to indicate a digital input, and not a solenoid coil (around 50 ohms).
The other two leads are good: Open (Infinite Ohms) with no vacuum. Short (0 Ohms) with vacuum present.
Does anyone know exactly what signals the ECM sends to the EGR Solenoid.
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Paul Romsky
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theogre
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SEP 03, 10:27 PM
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The solenoid like most relays likely has a diode to kill power surge when power is turn off.
ECM simply switches solenoid to ground same as does fuel injection.------------------
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)
The Ogre's Fiero Cave
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