what is this?
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Mountain Pass
Joined: Apr 2013
Posts: 193
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From: Midlothian, TX
what is this?
What is this thing? Looks like a sensor or solendoid that has one vacuum line to the TB and one line to the vacuum canister. There is a slight hissing coming from it. 
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Mountain Pass
Joined: Apr 2013
Posts: 193
Likes: 0
From: Midlothian, TX
My truck sometimes dies right after starting. If I give it some gas it will stay running fine. I was thinking maybe this thing was leaking and the vacuum leak caused the truck to die?
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Mountain Pass
Joined: Apr 2013
Posts: 193
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From: Midlothian, TX
I found my answer on the inter web. Thank you for telling me what that Thing was. I found out that is used to burn the built up fuel tank vapors through the tb. If the vapors do not get released, bad stuff will happen. I am going to block off the hole at the throttle body and just vent the canister to the open air until I buy a new solenoid
Senior User
Joined: Jun 2011
Posts: 382
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From: Milford, CT
For the dying, check your Idle Air Control, Throttle Position Sensor, Fuel Pressure, Engine Coolant Temperature sensor, Manifold Air Pressure, thermostat, and maybe you Air Charge Temperature sensor, in that order. oldfuelinjection.com has testing procedures for the sensors.
-Mike
-Mike
Last edited by mpc07005; Jun 1, 2013 at 06:34 AM. Reason: De-acronymed
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