Allowishus Posted December 9, 2005 Share Posted December 9, 2005 What is it and is it important? I was going through my fuses and found a missing fuse for ECM. So I put a 5amp fuse in turned the key to start and heard a loud fast ticking. Looked under the hood and these solenoid deals are making the noise. Is this normal? Should I replace them? Should I just pull the fuse back out and say screw it?:-\ Perhaps part of the prob ive been posting about.?.? Quote Link to comment Share on other sites More sharing options...
soobscript Posted December 9, 2005 Share Posted December 9, 2005 Is your car a turbo? If so, that would be the wastegate duty control solenoid. It activates the wastegate at max boost ~7 psi. It will click if the car is in test mode. Look below the steering wheel at the ECU (you may have to remove a plastic panel). Below it, here will be a male and female pair of black single-wire harnesses and green T-shaped single-wire harnesses. If you have an XT the connectors will be in the trunk. The green ones are for test mode. Disconnect the green ones to take it out of test mode. The black ones are for read memory. Green + black = clear memory. Keep the fuse in, put the correct size in if it is not 5A. Maybe someone put in test mode, didn't like the clicking, and pulled fuse? Quote Link to comment Share on other sites More sharing options...
Subi81 Posted December 9, 2005 Share Posted December 9, 2005 If your car is a mid to early 80's these valves regulate the amount of air that is mixed with the fuel before it is fed to the carb venturi. Basically they are the muscles of the feed back system. The ecm being the brains. If these valves haven't working you could have been running rich. Quote Link to comment Share on other sites More sharing options...
myfinalcoffinx Posted December 10, 2005 Share Posted December 10, 2005 I have EXACTLY the same thing going on under my hood. I tried to figure it out a few weeks ago, but got sorta burned out on it. Does this "test mode" apply to early 80's non-turbo wagons? EA-81 to be specific. If so, I want the green to go to black? huh? what? What is it and is it important? I was going through my fuses and found a missing fuse for ECM. So I put a 5amp fuse in turned the key to start and heard a loud fast ticking. Looked under the hood and these solenoid deals are making the noise. Is this normal? Should I replace them? Should I just pull the fuse back out and say screw it?:-\ Perhaps part of the prob ive been posting about.?.? Quote Link to comment Share on other sites More sharing options...
Allowishus Posted December 10, 2005 Author Share Posted December 10, 2005 Its non turbo 82 wagon. If they are there for air fuel mix then that might explain a few things, ie. rich gas smell/smoke in exhaust, and a bit of a gas smell in oil. Ill see if I can find a replacement and let you guys know how it goes. Quote Link to comment Share on other sites More sharing options...
soobscript Posted December 10, 2005 Share Posted December 10, 2005 Okay, just ignore everything I said. Mine applies to EA82 turbo's, not EA81 carbs. Quote Link to comment Share on other sites More sharing options...
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