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Thread: oil pressure guage
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05-02-2007, 04:45 PM #1
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- Mar 2007
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- Ontario, Canada
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- 2,064
yellow- 02 Collector Trans Am
oil pressure guage
When I turn my car off, my pressure guage stays at the direct middle or occasionaly it will slowly go all the way down. Also, when I start my car the pressure is high like inbetween the last last 2 ticks. When the car worms up, the pressure goes back to normal. Is this something I should be worried about? Do you think my guage is scewed? Please let me know. Thanks.
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05-02-2007, 04:55 PM #2
When the car is cold, the oil is more viscous and will record a higher pressure on the gauge. After it warms up, it "thins out" and the pressure will return to normal.
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05-02-2007, 08:47 PM #3
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- Mar 2007
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- Ontario, Canada
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- 2,064
yellow- 02 Collector Trans Am
Thanks...so a change that drastic would be caused just from the viscosity? The pressure also return to normal when I depress the clutch (motor under no load). Should that big of a change be seen? Is it ok to have high oil pressure?
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05-03-2007, 03:30 AM #4
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- Apr 2007
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- San Diego
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- 177
Red- 2002 T/A
That's strange my gauge falls flat as soon as I turn the engine off. No pressure no reading, right?
Yes this is normal and on mine when I'm accelerating my gauge moves up. More RPM's=oil pump spinning faster=higher pressure.
It sounds like a lazy/slow sensor or maybe something is holding oil pressure like plugged oil passages. My.02
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05-03-2007, 01:27 PM #5
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- Jul 2005
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- Jacksonville, FL
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- 2,723
We talking about the stock gauge? Oil pressure gauge on mine has always stayed at about a 1/4" past 40 after car is turned off - have friends whose cars do the same thing?????
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05-03-2007, 01:33 PM #6
- Join Date
- Mar 2007
- Location
- Ontario, Canada
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- 2,064
yellow- 02 Collector Trans Am
yes, the guage is stock
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05-03-2007, 02:31 PM #7
- Join Date
- Jul 2005
- Location
- Jacksonville, FL
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- 2,723
Staying at the last setting turning the key off is normal - "ocasionally it will slowly go all the way down" isn't. Unless you do something, like turning the key to RUN and not start the car, etc.
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05-04-2007, 01:23 PM #8
- Join Date
- Apr 2007
- Location
- San Juan Capistrano, CA
- Posts
- 236
Black- 2004 Cadillac CTS-V
my gauge flutters around 40...im thinkin just a bad connection somewhere...oh well, i dont care, it runs. lol
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06-13-2008, 08:40 PM #9
- Join Date
- Apr 2008
- Location
- RI
- Posts
- 16
My '02 SS stays at 40 when the car is turned off but when I put the ignition to the on position then back to off position it falls back with the rest of the gauges...but when I put it back to the on position it stays flat and all the rest go into their positions...not sure maybe a bad connection or ground, not sure on how the gauges actually function in that respect. Anyone have any ideas? Gauge functions properly when car is running and driving.
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06-14-2008, 09:22 AM #10
well from all I have read the guages in the 99-02's are reference only
they are electronic guages and any fluctuation could be interference from the stereo or alternator or a number of other things
I wouldn't worry about it
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