chefcr ... 5/12/2010

1985 Ford Bronco II XLT 6Cyl2.8L - Engine

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I have no power at the EVR which provides vacuum to the EGR valve. What the problem?

I have no power at the EVR which provides vacuum to the EGR valve. Relay works when power applied directly by the battery. Appears that relay works correctly. Can't pass smog without vacuum at egr.

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  HouseCallAuto 5/12/2010

  It gets power on the red wire (circuit 361) which originates at the EEC power relay but if the EEC power relay had no power coming out on the red wire it would also cut power to many other sensors as well like the canister purge solenoid so the loss of power might be from another place. A go-around fix would be to simply splice the red wire that you are manually applying power to the red wire that powers the other solenoid that you see next to the egr control solenoid. The pic I see calls it the inlet air system solenoid. If that red wire has power, it is the same red wire as the one that goes to the EGR solenoid. There is a splice that is nearby that may have failed and caused the power loss to the EGR solenoid. In my pictures I see two solenoids next to each other, one is called the EGR vent solenoid and the other is called the EGR control solenoid and they are immediately to the left of the map sensor. (Just so we are on the same page)Hope that helps.

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  chefcraig74 5/12/2010

  I know the solenoid that your talking about. I haven't ck it for power but guessing it might have a know power condition also,but I'll ck it just the same. What wiring diagram are you looking at? I'm using the Chilton Bronco ll manual. If you have something more useful I'd appricate it. chef.craig@yahoo.com