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Old 06-11-2017, 01:24 AM   #1
vikasevan
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Default 2004 Vue AWD automatic Random flashing / blinking of low pressure light

When its cold ..no blinking of low oil pressure light on dash but when it gets to about 185 degree it randomly blinks ...

Nothing obvious on how it runs....it runs well...

What ya guys think? could be bad oil pressure sending unit?
or some wiring problem related to this switch?

Also, there is two wire sensor/switch right next to oil pressure sending sensor ...what is that switch/sensor is for?

Rockauto says it is Oil Flow Control Switch; with Gauge and part no. is AIRTEX/WELLS 1S7596 or 12582261 or PS593 ....what does this two wire switch do?it has green color connector

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Old 06-11-2017, 02:13 AM   #2
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Default Re: 2004 Vue AWD automatic Random flashing / blinking of low pressure light

YOu haven't replaced it yet?

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Old 06-11-2017, 02:20 AM   #3
vikasevan
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Default Re: 2004 Vue AWD automatic Random flashing / blinking of low pressure light

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Originally Posted by billysvue View Post
YOu haven't replaced it yet?
I have not replaced it yet because ..I am still not sure if switch is bad ...there is a problem in oil pump ...when I replaced oil ...old oil was too dirty so I am thinking may be pickup screen is clogged...and that could cause low oil pressure ...

when its cold (when oil is thicker) it does not throw light ...it only throw light when its warm ...that makes me think when oil is warm it thins out ...and causes low light to come on..

So what does oil flow control switch do? does it control variable timing?
that switch has anything to do with blinking low pressure light on dash?

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Old 06-11-2017, 07:43 AM   #4
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Default Re: 2004 Vue AWD automatic Random flashing / blinking of low pressure light

Looking at the average jug of oil , the first number is the cold viscosity and the second is when it's warm/hot.......................

"when its cold (when oil is thicker) it does not throw light ...it only throw light when its warm ...that makes me think when oil is warm it thins out ."

...
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Old 06-13-2017, 01:53 PM   #5
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Default Re: 2004 Vue AWD automatic Random flashing / blinking of low pressure light

The flow control switch (green) is part of the variable timing.
The oil pressure switch could be bad. If the inside of the connector is oily then the switch is toast. The connector could also be bad. Try a wiggle test.
The best thing to do is to hook up a oil pressure gauge and see what the pressure actually is. If the pressure reads OK, then replace the sender.

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Old 06-13-2017, 09:19 PM   #6
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Default Re: 2004 Vue AWD automatic Random flashing / blinking of low pressure light

Quote:
Originally Posted by Claybury View Post
The flow control switch (green) is part of the variable timing.
The oil pressure switch could be bad. If the inside of the connector is oily then the switch is toast. The connector could also be bad. Try a wiggle test.
The best thing to do is to hook up a oil pressure gauge and see what the pressure actually is. If the pressure reads OK, then replace the sender.

So this flow control switch (green) has nothing to do with low oil pressure?

Also, when we hook the mechanical pressure gauge ...at the sending unit....does it check pressure before the oil pump or after?

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Old 06-13-2017, 09:54 PM   #7
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Default Re: 2004 Vue AWD automatic Random flashing / blinking of low pressure light

Correct. The flow control switch does not operate the low oil pressure lamp.
The oil pressure switch controls the lamp via the ECM.
Connecting a pressure gauge in the switch location will read the pressure after the oil pump.

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Old 06-13-2017, 09:56 PM   #8
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Default Re: 2004 Vue AWD automatic Random flashing / blinking of low pressure light

Quote:
Originally Posted by Claybury View Post
Correct. The flow control switch does not operate the low oil pressure lamp.
The oil pressure switch controls the lamp via the ECM.
Connecting a pressure gauge in the switch location will read the pressure after the oil pump.

Thanks...I will check oil pressure at sending unit soon.

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