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 Super high oil preesure after oil change?
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Nissan_Boy85



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48 posts
85 Nissan 720
Vanocuver WA
12-29-2008

  Super high oil preesure after oil change?


So yesterday I changed my oil, added brake fluid, etc. and kept glancing at my oil pressure gauge on the drive home from Portland. No problem there. I glanced at it this morning headed to class and the gauge was about freaking maxed!!! It was reading about 90 psi. Got a bit farther down I-5, and it was reading normal preesure, and it continued to the rest of the drive. It seems to do this untill the motor heats up to a sertin temp. What the hell?!

Oh, I knocked my temp gauge sensor wire off and haven't put it back on yet. That couldn't cause this, could it?



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PEZi720
Datsun Moderator



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11373 posts
'85 MurderBlack 720 (NICO's autocross truck)
719 and 303 CO
12-11-2008

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is it acting different at all? my guess is there's something misreading but it could of course be more serious. and knocking the temp one off could possibly cause it... the electronics in these things like to get funky for no reason so even though it doesn't make much sense for the temp gauge to cause it... i wouldn't rule it out




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flinterman2000



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479 posts
2000 Nissan Wingroad, 85 Datsun 720 Pick Up.
La Brea San Fernando
5-4-2009

 « Re: Super high oil preesure after oil change? (Nissan_Boy85)


Is it an electrical or manual gauge. if its electric, a slack connection or surge in the signal could be the cause. If its manual, it could be a sticking pressure relief valve. The temp wire would not affect it.
 

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