Question about 2001 Chevrolet Impala

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What are these palstic tubes on a 2001 Impala 3.8L?

I have a 2001 Impala 3.8L. I popped off the engine cover because I need to change the thermostat, and noticed that two tiny plastic lines are broken. They go in to something (not sure what, I'm still learning) that's basically directly above the thermostat housing. In the image at http://ww2.justanswer.com/uploads/djenn434/2010-12-27_234940_solenoids_0000.jpg they start together, on the far right towards the middle. The right-hand line from the number two passes over them just after they elbow; after that, they split and go to different things. Both of these are broken where they join that structure above the thermostat housing. The car seems to be running fine. I suspect they're lines for O2 sensors or something but that's a guess...the check engine light is on. I'd just like to know what they are and what to search for to find a replacement. Any help would be greatly appreciated.

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  • Colin Kirk Jul 16, 2013

    This is a picture of the hoses in question. I'm pointing to where they are broken.

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The first thing to do is get the computer scanned for trouble codes.
You should come up with codes for the EVAP system which is how the computer vents the gas tank to the vapor canister. O2 sensors are mounted in the exhaust pipes and don't use vac lines.

Posted on Jul 16, 2013

Testimonial: "Yeah, I know I need to do that. I'm just doing repairs and getting the car back to reliability as I can afford to. I was really just curious what those lines are. "

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