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Old 11-07-2018, 10:53 AM   #5
Scooby Newbie
Member#: 492450
Join Date: Oct 2018
Location: AB, Canada
2006 Forester - NA


Originally Posted by Charlie-III View Post
Sounds like it works......on a bench.......

You appear to have a harness issue, keep tracing back to find it. Quick would be to check any plug in connection upstream.
Seems like you have correct volts unloaded, but volts drop with any load. Could be a semi broken wire, corrosion, etc.
Mechanic seems to think it is an ECU problem but I am having a hard time believing this... I will trace the ground wire back to the ECU. When grounded there should be very little resistance between this wire and the negative battery terminal correct?

Unfortunately it's -20C out nowadays so I might be slow on troubleshooting this until I get a garage.

One weird thing I noticed is that I will get a rough start after filling up when the harness is plugged in leading me to believe that the valve is allowing vapors to be pushed into the manifold when it should be closed.
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