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Meth injection pump questtion.

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Old Apr 26, 2009 | 07:52 PM
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Default Meth injection pump questtion.

I recently installed a coolingmist system on my truck. It seems to work ok, but when the pump runs there is a constant clicking noise (like a relay) and it is like the pump is being turned on/off every second. I expected a more constant pump noise.(like a washer pump)

Is clicking noise this normal?

I can take a vid if needed.
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Old Apr 26, 2009 | 08:08 PM
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well, i searched on here and online before I posted. But I found the answer I was looking for. The click noise is the 150 pressure switch on the top of the pump, and is a normal condition.

you can delete this post or leave it for future searches.
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Old Apr 27, 2009 | 06:49 AM
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Hmmm..... the video will help. If the system MAF or MAP based?
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Old Jul 28, 2009 | 01:45 AM
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yes mine does the same , turns on and off with the pressure switch.
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