 VDO Oil Pressure Gauge Accuracy |
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| yeahmag |
 May 2 2013, 11:52 PM
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Advanced Member  Group: Members Posts: 2,455 Joined: 18-April 05 From: Pasadena, CA Member No.: 3,946 Region Association: Southern California 
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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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| MrHyde |
May 3 2013, 03:54 AM
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Senior Member Group: Members Posts: 525 Joined: 13-October 10 From: Ontario, Canada Member No.: 12,268 Region Association: None |
(sorry to hijack)
Would you lose the idiot light if you were to use the Stack gauge and sender ??? |
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| ChrisFoley |
May 3 2013, 04:38 AM
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I am Tangerine Racing Group: Members Posts: 7,990 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None
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QUOTE(MrHyde @ May 3 2013, 04:54 AM)  (sorry to hijack) Would you lose the idiot light if you were to use the Stack gauge and sender ??? There's no need to lose the light. Add a tee on the end of the extension hose so both the stock sender and gauge sender can be installed. |
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| bobhasissues |
May 3 2013, 07:07 PM
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#4
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seemingly endless issues with my 914 Group: Members Posts: 218 Joined: 13-February 07 From: Chicagoland Member No.: 7,532 Region Association: None |
[/quote]
There's no need to lose the light. Add a tee on the end of the extension hose so both the stock sender and gauge sender can be installed. [/quote] Example of what Chris said in photo.  .But, I would be concerned that the idiot light was not triggered by the VDO. Most complaints are that the VDO triggers the idiot light at higher pressure than the idiot would normally trigger on it's own. If your idiot light is not lighting when you crank the car then it's not getting a signal from the VDO. From the installation shown in the photo, you get two independent opinions, one from the VDO sender and a second from the idiot light which is no longer dependent on the VDO sender |
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Posts in this topic
yeahmag VDO Oil Pressure Gauge Accuracy May 2 2013, 11:52 PM
edwin I just bought a set of aem electronic gauges for m... May 3 2013, 12:32 AM McMark One of the VW mags did a gauge comparison and pret... May 3 2013, 12:54 AM edwin The cheaper stack range do not use the stepper mot... May 3 2013, 01:06 AM
pcar916 Longacre makes stepper pressure guages and tachs w... May 3 2013, 08:08 AM stugray
Make sure you have a good ground from the sender... May 3 2013, 08:26 AM yeahmag SUiOMwF9j_I May 3 2013, 02:10 PM yeahmag Wonder if something like this is the hot ticket:
... May 3 2013, 02:53 PM a914622 I ran into almost the same thing on my little die... May 4 2013, 09:20 AM yeahmag I think I've managed to confuse the issue... T... May 4 2013, 12:17 PM
tradisrad I never worried about oil pressure, head temp, etc... May 4 2013, 01:02 PM |
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