LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Oil Pressure Question

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Old Jan 31, 2010 | 08:25 AM
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Normally when I would be at idle like at a light my oil pressure would be sitting anywhere near 20-40 well now it sits right under 60 and when I get on it the pressure rises and gets close to 80... I know having low oil pressure is bad but what does this mean? it use to be low but now its sitting high....

Also I found out why im smelling oil burning... under pressure my tranny dipstick pops up a bit so im guessing the fluid comes out and spits up on the valve cover causing it to smell... if someone can help me out on what to do it would be fantastic
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Old Jan 31, 2010 | 08:33 AM
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good that you found why you smell oil....does your tranny dipstick not lock in??
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Old Jan 31, 2010 | 09:00 AM
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no it doesnt... it has the rubber thing that expands but I dont think it works... I dont know if its the stick or something worse I tried replacing it with a stick my friend had but the indents wouldnt allow to go all the way in so im gonna buy a new one and see what happens... I just dont know my oil pressure is so high all of a sudden
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Old Jan 31, 2010 | 10:48 AM
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Check the circuit to the o/p sensor and the sensor. If no troubles there, I would change the filter. There might be something wrong with it. Pretty odd for o/p to suddenly rise.
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Old Jan 31, 2010 | 11:49 AM
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Yeah I took my car out and got on it a bit and then when I came back home the oil pressure dropped at idle to about 40... So I dont know what the hell is going on with it but ill check that out for sure, kinda weird it went up and now it dropped bet you it will go back up again
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Old Jan 31, 2010 | 11:52 AM
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what kind of oil filter?
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Old Jan 31, 2010 | 11:57 AM
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Fram PH30 I believe.... I know its a fram cuz I just changed it and it had a fram on it before and it never did this...
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Old Jan 31, 2010 | 12:00 PM
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Fram?! Noooooo!!!

I'd change that sucker.
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Old Jan 31, 2010 | 12:04 PM
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Originally Posted by RamAir95TA
Fram?! Noooooo!!!

I'd change that sucker.
that bad huh lol

what do you recommend?
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Old Jan 31, 2010 | 12:06 PM
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Originally Posted by SixShooterCam
that bad huh lol

what do you recommend?
Honestly, anything but Fram. I've always used Mobil or Wix.
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Old Jan 31, 2010 | 12:15 PM
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Originally Posted by RamAir95TA
Honestly, anything but Fram. I've always used Mobil or Wix.
God Damnit I have to change it now just to see if it makes a difference lol
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Old Jan 31, 2010 | 12:28 PM
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Very unlikely to be caused by the filter. Fram have been known to have some quality issues and as such many opt not to run them. This does not cause pressure issues. What weight oil and type are you using? Have you changed recently? Oil pressure sensor might be faulty but not likely.

If anything, the standard tough guard fram is less restictive than many filters(one good example of a restrictive filter would be purolator pure one).. This filter has dense media and as such is more restrictive to oil flow. Still a very good filter.

The filter being plugged could cause this, but again not likely. Change the filter and see if there is a difference. Go with a regular wix or purolator if you want a less restrictive filter to compare against the Fram.
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Old Jan 31, 2010 | 12:41 PM
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im using 5w-30 and I just changed it like 2 weeks ago
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Old Jan 31, 2010 | 12:47 PM
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Check the op sensor first. There could be a restriction somewhere in the oil system or maybe it's just the weight of the oil.
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Old Jan 31, 2010 | 12:47 PM
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oil pressure sending unit or wiring to it.
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Old Jan 31, 2010 | 01:03 PM
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sweet ill check it when I get to my friends house...
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Old Jan 31, 2010 | 01:04 PM
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Originally Posted by SixShooterCam
Fram PH30 I believe.... I know its a fram cuz I just changed it and it had a fram on it before and it never did this...
If the pressure change was noted after the filter change (and nothing else was touched), that is where it would seem logical to start, IMHO. Please use something other than Fram. You don't have to drain all the oil just to change the filter. Fill the new filter with oil before putting it on (you should always do this, anyway) and you won't have to add hardly any oil to bring it back up to full.
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