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Vacuum Switch Ticking?

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Old Jan 17, 2012 | 07:43 PM
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Vacuum Switch Ticking?

Appears to be a vacuum switch right next to the throttle body on a 94 f150 w/302. It ticks at any speed above idle. Sounds like a plug arching, but it is definitely this ''switch''

Throttle body to the lright of this, EGR to the left



Could it just be caused by a collapsed vac line?
 
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Old Jan 18, 2012 | 07:51 AM
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Old Jan 18, 2012 | 08:19 AM
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A bigger/better photo would help us to answer your question.
 
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Old Jan 18, 2012 | 09:14 AM
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Cell phone pic..sucks i know.

It is the EGR Control Solenoid.
 
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Old Jan 18, 2012 | 09:26 AM
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The EVR (EGR Valve Regulator) is located next to the driver side valve cover. Mounted on the same bracket as the TAB/TAD solenoids.

 
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Old Jan 18, 2012 | 09:35 AM
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Perhaps you are referring to the IAC?

 
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Old Jan 18, 2012 | 09:46 AM
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Or the CANP (Vapor Canister Purge Solenoid) circled below:

 
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Old Jan 18, 2012 | 09:48 AM
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Originally Posted by rla2005
Or the CANP (Vapor Canister Purge Solenoid) circled below:


Yep, this one. Sorry I got EGR Solenoid off a google search.

Yes, this lil bugger clicks on any engine speed above idle. Idle was surging a hundred rpms as well unless I held the throttle blades closed against the stop.
 
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Old Jan 18, 2012 | 10:49 AM
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The CANP is controlled by the computer (PCM). Very odd to have it activated like you state. Suggest you run the KOEO tests and check for codes in Continuous Memory (CM).
 
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