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> VDO Oil Pressure Gauge Accuracy
yeahmag
post May 2 2013, 11:52 PM
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I'm starting to gather that my new VDO oil pressure gauge might not be all that great. Tonight (first time out at night) it was reading near 0lbs at idle, but the idiot light was not coming on (dual pole sender). Normally I see somewhere between 7-10lbs on the gauge when hot. My suspicion is that the voltage was lower (at idle) to the gauge because the headlights and what not were on.

I seem to remember RatWell saying these gauges weren't all that accurate, but being off by 10lbs is just silly. Gauge perked right up off idle and gave me well over 10lbs per 1K rpm. Are there any gauges that might be more accurate at the lower rpms than these? Aircraft Spruce is my favorite vendor for this stuff, but nothing they sell has any low PSI resolution in an electric gauge.

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tradisrad
post May 4 2013, 01:02 PM
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I never worried about oil pressure, head temp, etc. until I got gauges.
My VDO does some funny things too. I have good oil pressure on the freeway; 3k rpm and 60psi, but it will randomly drop down to 20psi and then after a minute it will go back to 60psi. It annoys the hell out of me and I just tell my self it's a gauge issue and not a problem with the engine. Not so sure I want to drop $200 on another gauge to eliminate the issue....
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