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Old 02-05-2009, 11:56 AM
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VAC pump question

I just noticed my vac pump (i think) on the passanger side finder well, it starts running as soon as i turn the key on and wont shut off, is this normal ???
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Old 02-05-2009, 12:36 PM
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I just went through that adventure myself except mine wouldn't turn on. It was toast, Im thinking for the same reason you have. What my pump controls that I have found is my automatic locking hubs and the front vents on my dash. Im thinking you might have a leak. If you notice there is a reservoir that the pump is attached to right in front of it. If I had to guess Id say you have a leak in the Pulse vacuum valve for your front hubs.
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Old 02-05-2009, 12:54 PM
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Thanks for the info, on your pump does it have a open port?
Mine does and if i put my finger over it it will shut off for a couple seconds then start running again.
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Old 02-05-2009, 01:27 PM
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Yeah it does. Its a little white one with a tube coming out the neck. I went ahead and replaced the Pulse hub vacuum solenoid as well. Just to make sure I don't burn another pump.
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Old 02-05-2009, 01:30 PM
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were is the solenoid located?
was the parts expensive?
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Old 02-05-2009, 01:42 PM
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Its right beside the pump more towards the headlight, its bolted to the fender. Im new to the forum but have been reading it for about 3 to 4 months. I took pics of them but cant figure out how to upload them to show you. How did you get the big picture of your truck on here?
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Old 02-05-2009, 01:47 PM
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get a photpbucket account (free) once you upload your pics it will give you codes for each pic, take the code and copy it into you sig. on your profile.
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Old 02-05-2009, 02:07 PM
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So you mean I just upgraded my account for nothing?
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Old 02-05-2009, 02:18 PM
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Hey made the account in photobucket. Which code is the one I need? HTML or which?
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Old 02-05-2009, 02:18 PM
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it means you have a leak somewhere. Mine did the same, then I found a line disconnected on the heater control valve (or something..)
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