airconditioning & Cruise control fuse

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Old Dec 3, 2004 | 07:56 PM
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Question airconditioning & Cruise control fuse

I Have a 1999 F150 5.4 Lariat, and I keep blowing the fuse for the cruise control and air conditioning circuit. I think it is the air conditioning clutch. Has anyone else had this problem? The mods that I have done are 2 1/2" exhaust to a flowmaster and a air box mod all this was done about 9 months ago this fuse started blow about a month ago I am starting to think it a lose ground It will work for week or so then it will burn the fuse
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Last edited by fairlanefan; Dec 8, 2004 at 08:39 PM.
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Old Dec 5, 2004 | 08:08 AM
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Specifically, what is the fuse #?

Steve
 
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Old Dec 5, 2004 | 12:38 PM
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JMC
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Do you mean the #5 15 amp fuse in the Central Junction Box under the dash on the left side of the steering column? Is your truck stock? Have you done any electrical mods to it?

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Jean Marc Chartier
 
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Old Dec 8, 2004 | 04:18 PM
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Originally posted by JMC
Do you mean the #5 15 amp fuse in the Central Junction Box under the dash on the left side of the steering column? Is your truck stock? Have you done any electrical mods to it?

Regards

Jean Marc Chartier
Yes that is the fuse I am talking about I have made some mods but not to elect system it is still all ford
thanks for help Benny
 
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Old Dec 8, 2004 | 06:46 PM
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What mods have you done? Please list.
Something is causing the circuit to blow a fuse. Most likely something that is grounding the load before it goes to the Cruise control module or the Blower motor or the Blend door actuator.

JMC
 
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Old Dec 8, 2004 | 08:33 PM
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Originally posted by JMC
What mods have you done? Please list.
Something is causing the circuit to blow a fuse. Most likely something that is grounding the load before it goes to the Cruise control module or the Blower motor or the Blend door actuator.

JMC
This fuse power the cruise control and the clutch for the air conditioner .The mods I done are 2 1/2 inch daul exhaust and a airbox mod all this was done about 9 months about this problem started about a month ago I will check all the ground I can find Thanks for the idea Benny
 
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Old Dec 9, 2004 | 07:23 AM
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This fuse doesn't supply the A/C clutch, but it does supply the selector switch, the high pressure cutout switch and the cycling switch all for the A/C system.

If the fuse blows immediately, it will be easier to find.

Connect an ohmmeter from the load side of the fuse to ground, then start unplugging each of the connectors on the branch corcuits until the short circuit goes away. Once you have identified the faulty branch circuit, it will have to be inspected to locate the fault.

A short circuit detector would come in handy, they cost about $40 and are very useful in locating the short.

Steve
 
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