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International Automotive Technicians Network
Re: INTERNATIONAL AC THERMISTORS
Posted to HD/Fleet Forum on 6/27/2018 1 Reply

You need to pull the o tube. Is it the right o tube, is the screen half plugged and was it inserted correctly?

20 psi on low side, o tube system is too low. An o tube system can handle about 24 psi minimum pressure. Ford used 24 as the cutout on their o tube... Login to read more.

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