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What is it?

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Old Oct 6, 2006 | 03:17 PM
  #1  
Medic911's Avatar
Medic911
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What is it?

2004 Fx4....it looks like some kind of solenoid...mounted to the firewall right next to the master cylinder.....has two hoses connected to it and a 2 wire connector from the wiring harness.....on the front is a schraeder (sp) valve.
What is it and what does it do?
Thx
 
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Old Oct 6, 2006 | 04:05 PM
  #2  
04XLTRUNNER's Avatar
04XLTRUNNER
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maybe a backup vacuum valve for the brakes if you have lost engine power. i remember learning something about this at school.

where do the 2 hoses connect on the other side?
 
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Old Oct 6, 2006 | 05:19 PM
  #3  
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96f150
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Thats a good question. I think it has to do with the fuel evap system
 
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Old Oct 7, 2006 | 09:25 AM
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Maybe to relieve the fuel system pressure to change out a fuel filter or injector or to check the fuel pressure.
 
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Old Oct 7, 2006 | 09:42 AM
  #5  
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Take a pic man...that way we can see, not guess LOL
 
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Old Oct 8, 2006 | 03:23 PM
  #6  
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That's the EVMV (electronic vapor management valve) it controls when the engine vacuum can suck the vapors out of the purge canister.
 
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Old Oct 8, 2006 | 06:24 PM
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Its the EVAP test port and emissons valve as previously stated. This is mandated by the government. This is to allow technitions to pressurize the fuel system with Nitrogen and Smoke to check for a leak. All in all its just another tool for the techs to use to diagnose that pesky check engine lamp.

Sarge
 
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Old Oct 8, 2006 | 08:16 PM
  #8  
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Thanks for the info guys!
 
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