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| s-10 erg solenoid replacement 87 Gt 2.8 (Page 1/2) |
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traceymac
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MAR 15, 02:18 PM
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saw alot of old experimental info on wiring hookup, all my wires are white. anyone know what wires go where, got the plug but it is wrong, can i just wire into existing ? thanks
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sanderson231
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MAR 15, 03:30 PM
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If you get the polarity wrong the solenoid will work backwards. The Fiero has a four wire plug:
"A" is a pink wire coming from the inj2 fuse. This goes to one of the solenoid wires.
"B" is a gray/red wire and comes from the other wire on the solenoid and goes to the ECM
"C'" is a dark green wire and goes to one side of the EGR vacuum diagnostic switch
"D" is a black/white wires and goes to the side of the EGR vacuum diagnostic switch
The polarity on "C" and "D" does not matter. The polarity on "A" and "B" matters. Google the "right hand rule" for solenoid operation. If the solenoid came with a connector, I would match up the letters to wire color.------------------
formerly known as sanderson
1984 Quad 4
1886 SE 2.8L
1988 4.9L Cadillac
1988 3800 Supercharged
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traceymac
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MAR 15, 03:39 PM
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thanks, but i have the s-10 one, fiero not available. it has 4 white wires, anybody done this swap and know which wires you connect. to original colored wire ?
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sanderson231
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MAR 15, 05:02 PM
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| quote | Originally posted by traceymac:
thanks, but i have the s-10 one, fiero not available. it has 4 white wires, anybody done this swap and know which wires you connect. to original colored wire ? |
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Does it have a plug on the wires? If so does the plug have the wires labeled?
If you check with an ohm meter there will be continuity through "A" and "B" although there will be some resistance. "C" and  : are normally open. They close when EGR valve sees >2" Hg vacuum. ------------------
formerly known as sanderson
1984 Quad 4
1886 SE 2.8L
1988 4.9L Cadillac
1988 3800 Supercharged
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mmeyer86gt/gtp
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MAR 17, 10:30 AM
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i thought with this mod you had to move to the 7730 ecu.
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traceymac
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MAR 17, 02:32 PM
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not heard this, any source you could pass on ? thanks
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sanderson231
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MAR 17, 04:47 PM
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| quote | Originally posted by mmeyer86gt/gtp:
i thought with this mod you had to move to the 7730 ecu. |
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All of what I said has assumed that the EGR solenoid from a 2.8L S10 is functionally the same as the 2.8l Fiero just with a different plug. That could be a bad assumption------------------
formerly known as sanderson
1984 Quad 4
1886 SE 2.8L
1988 4.9L Cadillac
1988 3800 Supercharged
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sanderson231
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MAR 17, 06:31 PM
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What year S-10 solenoid is it?
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traceymac
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MAR 18, 12:34 PM
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87-88 i think, got info from pennocks
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sanderson231
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MAR 18, 11:23 PM
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I checked Rockauto for 87 or 88 EGR S-10 Pick-Up p or Blazer EGR solenoid. They do no have one for an 87. They do have one for an 88. There are no white wires and as a matter of fact there are no wires at all. It looks like the Fiero connector would plug into this unit. It is unclear what EGR solenoid you have. ------------------
formerly known as sanderson
1984 Quad 4
1886 SE 2.8L
1988 4.9L Cadillac
1988 3800 Supercharged
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