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Water pressure sensor

Old 07-06-2018, 06:12 AM
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Default Water pressure sensor

Hi all- anyone have any thoughts on the water pressure sensor, can they be cleaned or do I need a new one? Last time I ran it went off. thanks in advance!
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Old 07-06-2018, 07:47 AM
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In my experience the problem has always been the wiring harness/connector not the sensor. If this is a twin application you could swap sensors and see if the problem follows the sensor.

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Old 07-06-2018, 10:06 AM
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First and foremost lets ask what type of sensor are you talking about OEM Merc for PCM 555 / ECM 555 or ?

Merc oem water pressure sensor - that sensor can go bad and some are bad right out of the box.

you can clean the hole out and try to see if that helps. I always do as well to see what takes place

Also poor grounding does not help for its location

RFI and EMI knocks the sensor out as well. spark plug wires and so forth

Last edited by BUP; 07-06-2018 at 10:13 AM.
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