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Old 08-18-2012, 10:12 PM   #1
wksos
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Default STRI Gauge Issue

I originally thought the issue I was having was attributed to high oil temps but it turns out when the a/c or lights are on the oil temp gauge kind of freaks out. If you turn both off the gauge reads normal and doesn't fluctuate. I have the gauges daisy chained and the other two gauges don't have this issue-is it an electrical problem or a faulty gauge?

Here is a short video of the issue:

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Old 08-19-2012, 12:48 AM   #2
jonthesloth
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Have you tried contacting the vendor or manufacturer? It could be just a defect on the unit.
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Old 08-19-2012, 01:01 AM   #3
wksos
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I haven't yet, thought I would ask the wonderful people of NASIOC first to see if it was a common issue or if it was something on my end first...
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Old 08-20-2012, 03:02 PM   #4
slowridn
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Creepy, maybe the electrical draw from the lights and the A/C running is messing with the signal to and from your sender? Im not familiar with the STRi gauge and sender construction but maybe try checking your volt reading at the daisy chain, if there is a significant voltage drop it might give the gauge a different reading than when its at the standard 12V?

Also I just noticed your other gauges following the same pattern to a lesser degree. I would check your electrical connections.
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Old 08-20-2012, 03:39 PM   #5
wksos
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The electrical connections were all soldered... Maybe weak battery or alternator?
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Old 08-20-2012, 03:46 PM   #6
slowridn
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I know that my car, with the A/C on and the lights on draws alot of voltage, I dont think its the battery, although I have always suspected the alternator is a little weak in these cars.

What position on the chain is the gauge? maybe try moving it closer to the source and see if that does anything? Or try removing the other 2 and running just that one to see if it changes at all?

Ill go check my STRi gauges and see if there is any deviation with a/c and lights.
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Old 08-20-2012, 03:51 PM   #7
wksos
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It was #2 on the chain but moved out to #1 and still no change. I'm going to remove one out two and see what that does. Please let me know off yours is doing the same
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Old 08-20-2012, 04:07 PM   #8
wksos
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So I just went out and removed the other two gauges and there was no difference so I decided to add another ground and that made a huge difference. Just to test it I stuck a wire into the ground port on the gauge connector and then grounded it to the seat bolt and it made a huge difference. It still moved a little but nothing like before-when I pulled the wire from the seat bolt it went right back up. Looks like maybe, in my car anyway, the clock ground wire isn't significant. I'm going to hook up two additional ground wires and see what that does.
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Old 08-20-2012, 04:13 PM   #9
slowridn
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Thats what I thought, If it wasn't that then I would have been stumped. Just as a reference I have a 60mm boost and oil pressure. The lights have no effect on them, the A/C takes my vacuum up and my oil pressure down due to engine load. Good luck.
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