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I've just replaced my intake with a ported stock intake and ported throttle body. Now I'm getting a little surge and some erratic idle. Yes, I'm pulling both codes for 171 & 174. During inspection I notice one connector that is unplugged. However, I don't see where it should be attached. It's one of the two lines that run across (left to right) over the very front of the intake. The one on the drivers side is connected. The one on the passengers side is not. Please help ID this line.
Can you take a picture of the connector (electrical or plastic tube)? 171 and 174 as you know are lean codes wich means you have a leak after the MAF. Make sure all the claps are tight and the MAF gasket was installed. If this dosn't work your going to have to get your car tuned to adjust for the extra airflow.
I'm sure a pic would be helpful. It's the connector with the green cap attached. It runs perpendicular to the fuel rails and across the front of the intake.
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This is part of the evap system. It snaps into the switch just behind the electrical connector show in my photo above.
However, it looks like the nipple on the switch is broken off and is still lodged in the connector. You may have to replace the switch assembly (the part with the red/blue electrical connector).