Oil Pressure - Fluctuating, dangerously - Experts please - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 02-14-2007, 04:12 PM   #11
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have one, trying to find a place to load it to
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Old 02-14-2007, 04:19 PM   #12
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Old 02-14-2007, 04:28 PM   #13
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Heh, they fooled you. That is the transmission shift modulator. Replace your oil pressure sensor, your problem will be fixed.
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Old 02-14-2007, 04:31 PM   #14
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wtf

what was that with replacing the oil pressure switch then?
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Old 02-14-2007, 04:57 PM   #15
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that is the trans Vacuum shift modulator, when a new trans i built the shop usually puts a new shift modulator,

Here is where the oil pressure sender is


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its above the oil filter adapter

you can access it thru the passenger side wheel well.....remove the inner liner and you can see it rather esay
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Old 02-14-2007, 05:00 PM   #16
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OK

I don't have the receipt in front of me

But they said they replaced the oil pressure switch....

does that like uh, fit in here anywhere?

and again, it'* not pegged at 120

it fluctuates, at idle its down by 40-- varies by engine speed
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Old 02-14-2007, 05:12 PM   #17
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C'mon guys isn't there an oil level switch & an oil pressure sender?
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Old 02-14-2007, 05:17 PM   #18
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Oil level switch should be in the front of the oil pan.
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Old 02-14-2007, 05:20 PM   #19
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okay...

so... what does that do... what is the difference between the switch and the sensor...?

wait

ok,, so if the switch is inside the pan, or whatever, that measures the amount of oil, and the sensor measures the pressure (tada)

in the front of the pan... does that mean inside the pan... how would I have broken that... unless the guy meant sensor...
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Old 02-14-2007, 05:22 PM   #20
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Quote:
Originally Posted by Daron97SSE
okay...

so... what does that do... what is the difference between the switch and the sensor...?

Oh, and remember...this is a 02+ motor!
the sender gives the gague the reading

the switch gives the low oil light on the cluster

the Series 2 motor is the same 96-05
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